/* Kanban Board Styles - Casual & Friendly */

* { box-sizing: border-box; }

/* ===== Theme Variables ===== */
:root {
    /* Dark theme (default) */
    --bg-body: #1e2630;
    --bg-header: #263040;
    --bg-column: #2a3444;
    --bg-column-hover: #323e50;
    --bg-card: #303c4e;
    --bg-input: #303c4e;
    --bg-modal: #2a3444;
    --border: rgba(255,255,255,0.08);
    --border-card: rgba(255,255,255,0.06);
    --border-input: rgba(255,255,255,0.12);
    --text: #e8eaed;
    --text-muted: #b0b8c4;
    --text-dimmed: #8892a0;
    --text-faint: #6b7585;
    --accent: #42b983;
    --accent-hover: rgba(66, 185, 131, 0.15);
    --link: #6cb4ee;
    --assignee: #6cb4ee;
    --label-bg: rgba(255,255,255,0.1);
    --label-text: #c8ccd4;
    --btn-hover: rgba(255,255,255,0.08);
    --btn-primary: #42b983;
    --btn-primary-hover: #4ecf93;
    --btn-danger: #e06060;
    --btn-danger-text: #f07070;
    --count-bg: rgba(255,255,255,0.2);
    --modal-overlay: rgba(0,0,0,0.5);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.2);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 20px;
    --theme-icon: "dark_mode";
}

[data-theme="light"] {
    --bg-body: #f5f6f8;
    --bg-header: #ffffff;
    --bg-column: #eef0f4;
    --bg-column-hover: #e4e7ec;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(0,0,0,0.06);
    --border-card: rgba(0,0,0,0.06);
    --border-input: #d4d8e0;
    --text: #2c3e50;
    --text-muted: #667788;
    --text-dimmed: #8899aa;
    --text-faint: #aabbcc;
    --accent: #42b983;
    --accent-hover: rgba(66, 185, 131, 0.1);
    --link: #3490dc;
    --assignee: #3490dc;
    --label-bg: #e8ecf2;
    --label-text: #556677;
    --btn-hover: #eef0f4;
    --btn-primary: #42b983;
    --btn-primary-hover: #4ecf93;
    --btn-danger: #e06060;
    --btn-danger-text: #d04040;
    --count-bg: rgba(0,0,0,0.1);
    --modal-overlay: rgba(0,0,0,0.25);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.06);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 20px;
    --theme-icon: "light_mode";
}

/* --- Ocean: Deep blue, cyan accent --- */
[data-theme="ocean"] {
    --bg-body: #0f1a2e;
    --bg-header: #152238;
    --bg-column: #1a2a42;
    --bg-column-hover: #22344e;
    --bg-card: #1e3048;
    --bg-input: #1e3048;
    --bg-modal: #1a2a42;
    --border: rgba(100,180,255,0.08);
    --border-card: rgba(100,180,255,0.06);
    --border-input: rgba(100,180,255,0.14);
    --text: #d8e8f8;
    --text-muted: #8aacc8;
    --text-dimmed: #6a8caa;
    --text-faint: #506a82;
    --accent: #22b8cf;
    --accent-hover: rgba(34,184,207,0.15);
    --link: #5cc8f0;
    --assignee: #5cc8f0;
    --label-bg: rgba(100,180,255,0.12);
    --label-text: #a0c4e0;
    --btn-hover: rgba(100,180,255,0.08);
    --btn-primary: #22b8cf;
    --btn-primary-hover: #2fd0e6;
    --btn-danger: #e06060;
    --btn-danger-text: #f07070;
    --count-bg: rgba(100,180,255,0.2);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Sunset: Warm dark, orange accent --- */
[data-theme="sunset"] {
    --bg-body: #1f1710;
    --bg-header: #2a1e14;
    --bg-column: #30241a;
    --bg-column-hover: #3c2e22;
    --bg-card: #362a1e;
    --bg-input: #362a1e;
    --bg-modal: #30241a;
    --border: rgba(255,160,80,0.1);
    --border-card: rgba(255,160,80,0.07);
    --border-input: rgba(255,160,80,0.15);
    --text: #f0e0d0;
    --text-muted: #c4a888;
    --text-dimmed: #9c8068;
    --text-faint: #7a6050;
    --accent: #f0884a;
    --accent-hover: rgba(240,136,74,0.15);
    --link: #f0a870;
    --assignee: #f0a870;
    --label-bg: rgba(255,160,80,0.12);
    --label-text: #d4b898;
    --btn-hover: rgba(255,160,80,0.08);
    --btn-primary: #f0884a;
    --btn-primary-hover: #f8a060;
    --btn-danger: #e05050;
    --btn-danger-text: #f07070;
    --count-bg: rgba(255,160,80,0.2);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Rose: Soft pink tones --- */
[data-theme="rose"] {
    --bg-body: #1e1418;
    --bg-header: #281c22;
    --bg-column: #2e2028;
    --bg-column-hover: #3a2a32;
    --bg-card: #34242e;
    --bg-input: #34242e;
    --bg-modal: #2e2028;
    --border: rgba(255,140,160,0.1);
    --border-card: rgba(255,140,160,0.07);
    --border-input: rgba(255,140,160,0.15);
    --text: #f0e0e4;
    --text-muted: #c8a0aa;
    --text-dimmed: #a08088;
    --text-faint: #806068;
    --accent: #e87090;
    --accent-hover: rgba(232,112,144,0.15);
    --link: #f0a0b8;
    --assignee: #f0a0b8;
    --label-bg: rgba(255,140,160,0.12);
    --label-text: #d8b0bc;
    --btn-hover: rgba(255,140,160,0.08);
    --btn-primary: #e87090;
    --btn-primary-hover: #f088a4;
    --btn-danger: #e05050;
    --btn-danger-text: #f07070;
    --count-bg: rgba(255,140,160,0.2);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Grape: Purple/violet tones --- */
[data-theme="grape"] {
    --bg-body: #18142a;
    --bg-header: #201a34;
    --bg-column: #26203e;
    --bg-column-hover: #302a4a;
    --bg-card: #2c2444;
    --bg-input: #2c2444;
    --bg-modal: #26203e;
    --border: rgba(160,140,255,0.1);
    --border-card: rgba(160,140,255,0.07);
    --border-input: rgba(160,140,255,0.15);
    --text: #e4e0f4;
    --text-muted: #a8a0c8;
    --text-dimmed: #8880a8;
    --text-faint: #686088;
    --accent: #9c6cf0;
    --accent-hover: rgba(156,108,240,0.15);
    --link: #b898f8;
    --assignee: #b898f8;
    --label-bg: rgba(160,140,255,0.12);
    --label-text: #c0b4e0;
    --btn-hover: rgba(160,140,255,0.08);
    --btn-primary: #9c6cf0;
    --btn-primary-hover: #b080f8;
    --btn-danger: #e06060;
    --btn-danger-text: #f07070;
    --count-bg: rgba(160,140,255,0.2);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.3);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Nord: Cool blue-gray inspired --- */
[data-theme="nord"] {
    --bg-body: #2e3440;
    --bg-header: #3b4252;
    --bg-column: #3b4252;
    --bg-column-hover: #434c5e;
    --bg-card: #434c5e;
    --bg-input: #434c5e;
    --bg-modal: #3b4252;
    --border: rgba(216,222,233,0.08);
    --border-card: rgba(216,222,233,0.06);
    --border-input: rgba(216,222,233,0.14);
    --text: #eceff4;
    --text-muted: #d8dee9;
    --text-dimmed: #a0aabb;
    --text-faint: #7a8494;
    --accent: #88c0d0;
    --accent-hover: rgba(136,192,208,0.15);
    --link: #81a1c1;
    --assignee: #81a1c1;
    --label-bg: rgba(136,192,208,0.12);
    --label-text: #c0d0dd;
    --btn-hover: rgba(216,222,233,0.08);
    --btn-primary: #88c0d0;
    --btn-primary-hover: #8fcbd8;
    --btn-danger: #bf616a;
    --btn-danger-text: #d08080;
    --count-bg: rgba(216,222,233,0.15);
    --modal-overlay: rgba(0,0,0,0.5);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.2);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.15);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Monokai: Classic warm dark dev theme --- */
[data-theme="monokai"] {
    --bg-body: #272822;
    --bg-header: #2e2f28;
    --bg-column: #33342c;
    --bg-column-hover: #3c3d34;
    --bg-card: #3a3b32;
    --bg-input: #3a3b32;
    --bg-modal: #33342c;
    --border: rgba(248,248,242,0.08);
    --border-card: rgba(248,248,242,0.06);
    --border-input: rgba(248,248,242,0.14);
    --text: #f8f8f2;
    --text-muted: #c8c8b8;
    --text-dimmed: #a0a090;
    --text-faint: #78786c;
    --accent: #a6e22e;
    --accent-hover: rgba(166,226,46,0.15);
    --link: #66d9ef;
    --assignee: #66d9ef;
    --label-bg: rgba(166,226,46,0.12);
    --label-text: #c8d8a0;
    --btn-hover: rgba(248,248,242,0.08);
    --btn-primary: #a6e22e;
    --btn-primary-hover: #b8f040;
    --btn-danger: #f92672;
    --btn-danger-text: #ff6090;
    --count-bg: rgba(248,248,242,0.15);
    --modal-overlay: rgba(0,0,0,0.5);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Coffee: Warm brown tones --- */
[data-theme="coffee"] {
    --bg-body: #1a1412;
    --bg-header: #241c18;
    --bg-column: #2a221e;
    --bg-column-hover: #342a24;
    --bg-card: #302824;
    --bg-input: #302824;
    --bg-modal: #2a221e;
    --border: rgba(200,160,120,0.1);
    --border-card: rgba(200,160,120,0.07);
    --border-input: rgba(200,160,120,0.15);
    --text: #e8dcd0;
    --text-muted: #b8a090;
    --text-dimmed: #988070;
    --text-faint: #786058;
    --accent: #c8956c;
    --accent-hover: rgba(200,149,108,0.15);
    --link: #d4a878;
    --assignee: #d4a878;
    --label-bg: rgba(200,160,120,0.12);
    --label-text: #c8b4a0;
    --btn-hover: rgba(200,160,120,0.08);
    --btn-primary: #c8956c;
    --btn-primary-hover: #d8a880;
    --btn-danger: #d05050;
    --btn-danger-text: #e07070;
    --count-bg: rgba(200,160,120,0.2);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Sakura: Light pink theme --- */
[data-theme="sakura"] {
    --bg-body: #fdf5f7;
    --bg-header: #ffffff;
    --bg-column: #fceef2;
    --bg-column-hover: #f8e0e8;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(200,100,130,0.1);
    --border-card: rgba(200,100,130,0.08);
    --border-input: #e8c8d0;
    --text: #4a2030;
    --text-muted: #906070;
    --text-dimmed: #b08090;
    --text-faint: #d0a8b4;
    --accent: #e06088;
    --accent-hover: rgba(224,96,136,0.1);
    --link: #c84870;
    --assignee: #c84870;
    --label-bg: #fce0e8;
    --label-text: #884060;
    --btn-hover: #fce8ee;
    --btn-primary: #e06088;
    --btn-primary-hover: #e87898;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(200,100,130,0.12);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(200,100,130,0.08);
    --shadow-header: 0 2px 8px rgba(200,100,130,0.06);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Sky: Light blue theme --- */
[data-theme="sky"] {
    --bg-body: #f0f6fc;
    --bg-header: #ffffff;
    --bg-column: #e4eef8;
    --bg-column-hover: #d6e4f2;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(40,100,180,0.08);
    --border-card: rgba(40,100,180,0.06);
    --border-input: #b4c8e0;
    --text: #1a2e44;
    --text-muted: #506888;
    --text-dimmed: #7890aa;
    --text-faint: #a0b8cc;
    --accent: #3088d0;
    --accent-hover: rgba(48,136,208,0.1);
    --link: #2070b8;
    --assignee: #2070b8;
    --label-bg: #d8e8f4;
    --label-text: #305880;
    --btn-hover: #e0ecf6;
    --btn-primary: #3088d0;
    --btn-primary-hover: #409ce0;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(40,100,180,0.1);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(40,80,140,0.06);
    --shadow-header: 0 2px 8px rgba(40,80,140,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Marine: Light with deep/navy blue accent --- */
[data-theme="marine"] {
    --bg-body: #eef2f8;
    --bg-header: #ffffff;
    --bg-column: #e0e6f0;
    --bg-column-hover: #d4dae8;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(30,60,120,0.08);
    --border-card: rgba(30,60,120,0.06);
    --border-input: #b0b8cc;
    --text: #1a2240;
    --text-muted: #4a5470;
    --text-dimmed: #707890;
    --text-faint: #a0a8b8;
    --accent: #2850a8;
    --accent-hover: rgba(40,80,168,0.1);
    --link: #1e4090;
    --assignee: #1e4090;
    --label-bg: #d4daea;
    --label-text: #2a3860;
    --btn-hover: #dce2ee;
    --btn-primary: #2850a8;
    --btn-primary-hover: #3060b8;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(30,60,120,0.1);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(20,40,80,0.06);
    --shadow-header: 0 2px 8px rgba(20,40,80,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Lemon: Bright fresh yellow theme --- */
[data-theme="lemon"] {
    --bg-body: #fffef2;
    --bg-header: #ffffff;
    --bg-column: #fdf8d8;
    --bg-column-hover: #faf2c4;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(200,180,20,0.1);
    --border-card: rgba(200,180,20,0.08);
    --border-input: #e0d880;
    --text: #38340a;
    --text-muted: #6a6418;
    --text-dimmed: #908828;
    --text-faint: #b8b060;
    --accent: #e8c820;
    --accent-hover: rgba(232,200,32,0.12);
    --link: #a89810;
    --assignee: #a89810;
    --label-bg: #f6f0b8;
    --label-text: #5c5610;
    --btn-hover: #f8f4cc;
    --btn-primary: #d4b818;
    --btn-primary-hover: #e0c828;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(200,180,20,0.12);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(120,110,10,0.06);
    --shadow-header: 0 2px 8px rgba(120,110,10,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Apricot: Light warm orange theme --- */
[data-theme="apricot"] {
    --bg-body: #fdf7f2;
    --bg-header: #ffffff;
    --bg-column: #f8ede4;
    --bg-column-hover: #f2e2d6;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(180,100,40,0.08);
    --border-card: rgba(180,100,40,0.06);
    --border-input: #dcc4a8;
    --text: #3c2814;
    --text-muted: #7a5838;
    --text-dimmed: #a08060;
    --text-faint: #c4a888;
    --accent: #d08030;
    --accent-hover: rgba(208,128,48,0.1);
    --link: #b06820;
    --assignee: #b06820;
    --label-bg: #f4e4d0;
    --label-text: #704820;
    --btn-hover: #f6eadc;
    --btn-primary: #d08030;
    --btn-primary-hover: #e09040;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(180,100,40,0.1);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(120,70,30,0.06);
    --shadow-header: 0 2px 8px rgba(120,70,30,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Lavender: Light purple theme --- */
[data-theme="lavender"] {
    --bg-body: #f8f4fc;
    --bg-header: #ffffff;
    --bg-column: #eee6f6;
    --bg-column-hover: #e4daee;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(120,60,180,0.08);
    --border-card: rgba(120,60,180,0.06);
    --border-input: #c8b4dc;
    --text: #2e1a40;
    --text-muted: #685080;
    --text-dimmed: #8878a0;
    --text-faint: #b0a4c0;
    --accent: #8848c0;
    --accent-hover: rgba(136,72,192,0.1);
    --link: #7038a8;
    --assignee: #7038a8;
    --label-bg: #e4d8f0;
    --label-text: #503878;
    --btn-hover: #ece2f4;
    --btn-primary: #8848c0;
    --btn-primary-hover: #9858d0;
    --btn-danger: #d04040;
    --btn-danger-text: #c03030;
    --count-bg: rgba(120,60,180,0.1);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(80,40,120,0.06);
    --shadow-header: 0 2px 8px rgba(80,40,120,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Dracula: Classic Dracula-inspired --- */
[data-theme="dracula"] {
    --bg-body: #282a36;
    --bg-header: #2c2e3a;
    --bg-column: #343746;
    --bg-column-hover: #3c4050;
    --bg-card: #3a3d4e;
    --bg-input: #3a3d4e;
    --bg-modal: #343746;
    --border: rgba(189,147,249,0.08);
    --border-card: rgba(189,147,249,0.06);
    --border-input: rgba(189,147,249,0.14);
    --text: #f8f8f2;
    --text-muted: #c0b8d4;
    --text-dimmed: #9890a8;
    --text-faint: #706880;
    --accent: #bd93f9;
    --accent-hover: rgba(189,147,249,0.15);
    --link: #8be9fd;
    --assignee: #8be9fd;
    --label-bg: rgba(189,147,249,0.12);
    --label-text: #c8c0e0;
    --btn-hover: rgba(189,147,249,0.08);
    --btn-primary: #bd93f9;
    --btn-primary-hover: #caa8ff;
    --btn-danger: #ff5555;
    --btn-danger-text: #ff7878;
    --count-bg: rgba(189,147,249,0.18);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.25);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Mono Light: Clean monochrome light --- */
[data-theme="mono-light"] {
    --bg-body: #f4f4f4;
    --bg-header: #ffffff;
    --bg-column: #eaeaea;
    --bg-column-hover: #e0e0e0;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-modal: #ffffff;
    --border: rgba(0,0,0,0.08);
    --border-card: rgba(0,0,0,0.06);
    --border-input: #c8c8c8;
    --text: #222222;
    --text-muted: #666666;
    --text-dimmed: #888888;
    --text-faint: #b0b0b0;
    --accent: #606060;
    --accent-hover: rgba(96,96,96,0.1);
    --link: #444444;
    --assignee: #444444;
    --label-bg: #e0e0e0;
    --label-text: #444444;
    --btn-hover: #eaeaea;
    --btn-primary: #505050;
    --btn-primary-hover: #606060;
    --btn-danger: #c04040;
    --btn-danger-text: #b03030;
    --count-bg: rgba(0,0,0,0.08);
    --modal-overlay: rgba(0,0,0,0.2);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.06);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.04);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* --- Mono Dark: Clean monochrome dark --- */
[data-theme="mono-dark"] {
    --bg-body: #1a1a1a;
    --bg-header: #242424;
    --bg-column: #242424;
    --bg-column-hover: #2e2e2e;
    --bg-card: #2e2e2e;
    --bg-input: #2e2e2e;
    --bg-modal: #242424;
    --border: rgba(255,255,255,0.08);
    --border-card: rgba(255,255,255,0.06);
    --border-input: rgba(255,255,255,0.12);
    --text: #e0e0e0;
    --text-muted: #a0a0a0;
    --text-dimmed: #808080;
    --text-faint: #606060;
    --accent: #a0a0a0;
    --accent-hover: rgba(160,160,160,0.15);
    --link: #b0b0b0;
    --assignee: #b0b0b0;
    --label-bg: rgba(255,255,255,0.1);
    --label-text: #c0c0c0;
    --btn-hover: rgba(255,255,255,0.08);
    --btn-primary: #909090;
    --btn-primary-hover: #a0a0a0;
    --btn-danger: #d06060;
    --btn-danger-text: #e07070;
    --count-bg: rgba(255,255,255,0.12);
    --modal-overlay: rgba(0,0,0,0.55);
    --column-header-color: #fff;
    --shadow-card: 0 1px 4px rgba(0,0,0,0.3);
    --shadow-header: 0 2px 8px rgba(0,0,0,0.2);
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-pill: 20px;
}

/* ===== Base ===== */

body {
    margin: 0;
    padding: 0;
    background: var(--bg-body);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    font-size: 14px;
    overflow: hidden;
    transition: background 0.25s, color 0.25s;
    line-height: 1.6;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.kanban-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    background: var(--bg-header);
    box-shadow: var(--shadow-header);
}
.header-left { display: flex; align-items: center; gap: 10px; }
.header-right { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: block;
}
.logo {
    margin: 0;
    font-size: 22px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.5px;
}
.user-name { color: var(--text-muted); font-size: 13px; }
.user-menu-container { position: relative; }
.user-menu-btn {
    padding: 0 !important;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.user-menu-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
}
.user-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--bg-modal);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    min-width: 180px;
    z-index: 1100;
    padding: 4px 0;
}
.user-menu.active { display: block; }
.user-menu-name {
    padding: 8px 16px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 240px;
}
.user-menu-item {
    display: block;
    width: 100%;
    padding: 8px 16px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
}
.user-menu-item:hover { background: var(--btn-hover); }
.user-menu-divider { border: none; border-top: 1px solid var(--border-card); margin: 4px 0; }
.user-menu-ws { margin: 0 16px 4px; padding: 6px 10px; font-size: 13px; box-sizing: border-box; width: auto; }
.user-menu-label { display: block; padding: 4px 16px 2px; font-size: 11px; color: var(--text-muted); }

/* Toolbar label (inline field label, e.g. '並び順') */
.toolbar-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
}

/* Sync Area */
.sync-area {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.sync-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
.sync-status-label {
    display: inline-block;
    font-size: 11px;
    font-weight: bold;
    text-align: left;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
}
.sync-timestamp {
    font-size: 11px;
    color: var(--text-muted, #888);
    white-space: nowrap;
}

.sync-btn {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    min-width: 72px;
    background: #fff;
    border-color: var(--btn-primary);
    color: var(--text);
}
.sync-btn:hover { background: #f0f0f0; }
.sync-btn.syncing {
    background: #fff;
    border-color: var(--btn-primary);
    cursor: pointer;
}
.sync-btn.syncing[disabled] {
    opacity: 1;
}
.sync-btn.sync-done {
    background: #fff;
    border-color: var(--btn-primary);
}
.sync-btn.sync-error {
    background: var(--btn-danger, #e53e3e);
    border-color: var(--btn-danger, #e53e3e);
}
.sync-btn .sync-btn-fill {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 0%;
    background: var(--btn-primary);
    transition: width 0.5s ease, opacity 0.3s ease;
    z-index: 0;
    pointer-events: none;
}
.sync-btn .sync-btn-shimmer {
    position: absolute;
    top: 0; bottom: 0; left: 0;
    width: 40%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.45), transparent);
    transform: translateX(-100%);
    opacity: 0;
    z-index: 1;
    pointer-events: none;
}
.sync-btn.syncing .sync-btn-shimmer {
    opacity: 1;
    animation: sync-btn-shimmer 1.4s linear infinite;
}
.sync-btn .sync-btn-label {
    position: relative;
    z-index: 2;
    color: var(--text);
}
.sync-btn.syncing .sync-btn-label { color: #fff; }
.sync-btn.sync-done .sync-btn-label { color: var(--text); }
.sync-btn.sync-error .sync-btn-label { color: #fff; }
@keyframes sync-btn-shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(600%); }
}

/* Pull-to-refresh */
.pull-to-refresh {
    height: 0;
    opacity: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    transition: height 0.3s, opacity 0.3s;
    position: sticky;
    left: 0;
    right: 0;
    z-index: 2;
}

/* Footer */
.kanban-footer {
    padding: 16px 24px 80px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    position: sticky;
    left: 0;
    width: 100vw;
    box-sizing: border-box;
}

/* Toolbar */
.kanban-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
}

/* View switcher — full-width tab bar between header and toolbar */
.view-switcher {
    display: flex;
    border-bottom: 1px solid var(--border);
    background: var(--bg-header);
}
.view-tab {
    flex: 1;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-muted);
    padding: 10px 0;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: color 0.15s, border-color 0.15s;
}
.view-tab:hover { color: var(--text-primary); }
.view-tab.active {
    color: var(--btn-primary);
    border-bottom-color: var(--btn-primary);
}

/* Column Header (shared by grid view) */
.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 13px;
    line-height: 1;
    letter-spacing: 0.3px;
    color: var(--column-header-color);
    cursor: pointer;
    user-select: none;
    transition: filter 0.2s;
}
.column-header:hover { filter: brightness(1.1); }
.column-header-0 { background: #8c9bab; }  /* 未着手 - やわらかいグレー */
.column-header-1 { background: #4a9ede; }  /* 対応中 - 明るいブルー */
.column-header-2 { background: #f0944d; }  /* 応答待 - やさしいオレンジ */
.column-header-3 { background: #42b983; }  /* 完了 - フレンドリーなグリーン */
.column-header-4 { background: #d07070; }  /* 中止 - ソフトなレッド */

.column-header-right {
    display: flex;
    align-items: center;
    gap: 6px;
}
.column-eye {
    display: inline-block;
    width: 16px;
    height: 16px;
    opacity: 0.7;
    vertical-align: middle;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}
/* Visible column: eye icon shows on hover */
.column-header:not(.column-hidden) .column-eye {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 4.5C7 4.5 2.73 7.61 1 12c1.73 4.39 6 7.5 11 7.5s9.27-3.11 11-7.5c-1.73-4.39-6-7.5-11-7.5zm0 12.5c-2.76 0-5-2.24-5-5s2.24-5 5-5 5 2.24 5 5-2.24 5-5 5zm0-8c-1.66 0-3 1.34-3 3s1.34 3 3 3 3-1.34 3-3-1.34-3-3-3z'/%3E%3C/svg%3E");
    opacity: 0;
    transition: opacity 0.15s;
}
.column-header:not(.column-hidden):hover .column-eye { opacity: 0.7; }
/* Hidden column: closed eye icon always visible */
.column-hidden .column-eye {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 7c2.76 0 5 2.24 5 5 0 .65-.13 1.26-.36 1.83l2.92 2.92c1.51-1.26 2.7-2.89 3.43-4.75-1.73-4.39-6-7.5-11-7.5-1.4 0-2.74.25-3.98.7l2.16 2.16C11.74 7.13 11.35 7 12 7zM2 4.27l2.28 2.28.46.46A11.8 11.8 0 001 12c1.73 4.39 6 7.5 11 7.5 1.55 0 3.03-.3 4.38-.84l.42.42L19.73 22 21 20.73 3.27 3 2 4.27zM7.53 9.8l1.55 1.55c-.05.21-.08.43-.08.65 0 1.66 1.34 3 3 3 .22 0 .44-.03.65-.08l1.55 1.55c-.67.33-1.41.53-2.2.53-2.76 0-5-2.24-5-5 0-.79.2-1.53.53-2.2zm4.31-.78l3.15 3.15.02-.16c0-1.66-1.34-3-3-3l-.17.01z'/%3E%3C/svg%3E");
    opacity: 0.8;
}

/* Hidden column */
.column-header.column-hidden {
    opacity: 0.55;
}
.column-header.column-hidden:hover { opacity: 0.8; }

.grid-cell-hidden {
    background: var(--bg-column);
    opacity: 0.35;
}

.column-count {
    background: var(--count-bg);
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 500;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    -webkit-user-select: none;
    user-select: none;
    margin-bottom: 8px;
    cursor: grab;
    box-shadow: var(--shadow-card);
    position: relative;
    transition: transform 0.15s, box-shadow 0.2s, border-color 0.15s;
    touch-action: pan-x pan-y;
}
.card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px var(--accent-hover);
    transform: translateY(-1px);
}
.card.dragging {
    opacity: 0.5;
    transform: rotate(2deg) scale(1.02);
}
/* While any card is being dragged, disable pointer-events on all other cards
   so they don't intercept dragenter/dragleave/drop on the grid-cell */
.kanban-board-grid-wrapper.is-dragging .card:not(.dragging) {
    pointer-events: none;
}
.card-repo {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--text-dimmed);
    margin-bottom: 6px;
}
.card-close {
    background: none;
    border: none;
    color: var(--text-faint);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: 4px;
    opacity: 0;
    transition: all 0.15s;
}
.card:hover .card-close { opacity: 1; }
.card-close:hover { color: var(--btn-danger-text); background: rgba(224,96,96,0.1); }
.card-gh-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    line-height: 1;
    padding: 2px 4px;
    opacity: 0.4;
    position: absolute;
    top: 4px;
    right: 4px;
    z-index: 1;
}
.card-gh-link:hover { opacity: 1; color: var(--btn-primary); }
.card-selected { outline: 2px solid var(--btn-primary); outline-offset: -2px; }
.card-selected .card-close { opacity: 1; }
.select-box {
    position: fixed;
    border: 1px solid var(--btn-primary);
    background: rgba(30, 136, 229, 0.1);
    pointer-events: none;
    z-index: 900;
    display: none;
}
.card-title {
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 6px;
}
.card-title a {
    color: var(--link);
    text-decoration: none;
    font-weight: 600;
    margin-right: 4px;
}
.card-title a:hover { text-decoration: underline; }
.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    align-items: center;
}
.assignee {
    font-size: 11px;
    color: var(--assignee);
}
.label {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    background: var(--label-bg);
    color: var(--label-text);
    font-weight: 500;
}
.card-date {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-card);
    color: var(--text-muted);
    white-space: nowrap;
}
.card-date-limit { border-color: var(--btn-primary); color: var(--btn-primary); }
.card-date-end { opacity: 0.7; }
.card-date-start { opacity: 0.6; }

/* Calendar view */
.kanban-calendar-wrapper { padding: 16px 24px; overflow: auto; flex: 1; min-height: 0; display: flex; flex-direction: column; overscroll-behavior: contain; touch-action: pan-x pan-y; }
.kanban-calendar-wrapper.week-mode { overflow: hidden; }
.cal-header { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; margin-bottom: 12px; position: sticky; top: 0; background: var(--bg-body); z-index: 3; padding: 8px 0; flex-shrink: 0; }
.cal-header-left { display: flex; gap: 8px; align-items: center; justify-self: start; }
.cal-today-btn { margin-left: 8px; }
.cal-header-center { display: flex; gap: 8px; align-items: center; justify-self: center; }
.cal-header-right { display: flex; gap: 8px; align-items: center; justify-self: end; }
.cal-title { font-size: 16px; font-weight: 600; flex: 1; text-align: center; }
.cal-header .cal-title { flex: none; min-width: 6em; }
.cal-grid-outer {
    overflow: hidden;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}
@media (max-width: 768px) {
    .cal-grid-outer { max-width: 100%; }
}
.cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border);
    overflow: hidden;
}
/* Swipe animation: slide in from left/right after navigation */
.cal-swipe-slide-in-left { animation: swipeSlideInLeft 0.3s cubic-bezier(.25,.46,.45,.94); }
.cal-swipe-slide-in-right { animation: swipeSlideInRight 0.3s cubic-bezier(.25,.46,.45,.94); }
@keyframes swipeSlideInLeft {
    0% { transform: translateX(100%); }
    100% { transform: translateX(0); }
}
@keyframes swipeSlideInRight {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(0); }
}
/* Carousel swipe: container holds current + peek (next/prev) side by side */
.cal-carousel {
    display: flex;
    will-change: transform;
}
.cal-carousel > * { flex: 0 0 100%; min-width: 0; }
.cal-carousel.cal-swiping { transition: none; }
.cal-carousel.cal-snapping { transition: transform 0.3s cubic-bezier(.25,.46,.45,.94); }
.cal-weekday {
    background: var(--bg-header);
    padding: 6px 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
}
.cal-weekday-0 { color: #d14343; }
.cal-weekday-6 { color: #3a83c7; }
.cal-cell {
    background: var(--bg-card);
    aspect-ratio: 1;
    padding: 6px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    cursor: pointer;
    position: relative;
}
.cal-cell:hover { background: color-mix(in srgb, var(--btn-primary) 10%, var(--bg-card)); }
.cal-cell-other { background: var(--bg-column); opacity: 0.55; }
.cal-cell-today { box-shadow: inset 0 0 0 2px var(--btn-primary); }
.cal-dow-0 .cal-date { color: #d14343; }
.cal-dow-6 .cal-date { color: #3a83c7; }
.cal-date { font-size: 14px; font-weight: 600; color: var(--text-muted); }
.cal-badges { display: grid; grid-template-columns: repeat(2, 36px); gap: 6px; justify-content: center; align-content: center; margin: auto 0; width: 100%; flex: 1; }
.cal-badges > :only-child { grid-column: 1 / -1; justify-self: center; }
.cal-badge {
    font-size: 12px;
    font-weight: 600;
    background: var(--btn-primary);
    color: #fff;
    border-radius: 12px;
    width: 36px;
    padding: 3px 0;
    text-align: center;
    line-height: 1.3;
    box-sizing: border-box;
}
.cal-badge-overdue { background: var(--btn-danger, #e06060); }
.cal-badge-near { background: #e6a817; }
.cal-badge-done { background: #888; }

/* Month/Week mode switch */
.cal-mode-switch { display: inline-flex; gap: 2px; }
.cal-mode-active { background: var(--btn-primary) !important; color: #fff !important; border-color: var(--btn-primary) !important; }

/* Week view grid */
.week-scroll-wrapper {
    flex: 1;
    overflow: auto;
    min-height: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}
.week-grid {
    display: flex;
    min-width: 100%;
}
.week-day-col {
    width: 200px;
    min-width: 200px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
}
.week-day-col:first-child { border-left: 1px solid var(--border); }
.week-col-header {
    padding: 8px 6px;
    text-align: center;
    font-weight: 600;
    font-size: 13px;
    background: var(--bg-header);
    cursor: pointer;
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--border);
}
.week-col-header:hover { background: color-mix(in srgb, var(--btn-primary) 10%, var(--bg-header)); }
.week-day-label { display: block; font-size: 11px; color: var(--text-muted); }
.week-day-num { display: block; font-size: 16px; }
.week-col-body { padding: 4px; display: flex; flex-direction: column; gap: 4px; background: var(--bg-card); flex: 1; }
.week-col-body-today { box-shadow: inset 0 0 0 2px var(--btn-primary); }
.week-empty { min-height: 40px; }

/* Day view (multi-day timeline) */
.day-view-container { max-width: 720px; margin: 0 auto; width: 100%; }
.day-section { margin-bottom: 8px; }
.day-section-header {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px 4px 6px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 6px;
    position: sticky;
    top: 44px;
    background: var(--bg-body);
    z-index: 2;
}
.day-section-header-today { color: var(--btn-primary); }
.day-section-header-dow-0 { color: #d14343; }
.day-section-header-dow-6 { color: #3a83c7; }
.day-section-empty { font-size: 12px; color: var(--text-faint); padding: 4px 8px; min-height: 20px; }

/* Timeline view */
.kanban-timeline-wrapper { padding: 16px 24px; overflow: auto; overscroll-behavior: contain; touch-action: pan-x pan-y; }
.tl-container { max-width: 720px; margin: 0 auto; position: relative; }
.tl-container::before {
    content: '';
    position: absolute;
    left: 82px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}
.tl-section-title { font-size: 12px; color: var(--text-muted); margin: 16px 0 8px 96px; font-weight: 600; }
.tl-today-marker {
    text-align: center;
    color: var(--btn-primary);
    font-size: 12px;
    font-weight: 600;
    margin: 20px 0;
    position: relative;
    background: var(--bg);
    padding: 4px 0;
}
.tl-empty { color: var(--text-muted); padding: 32px; text-align: center; }
.tl-row {
    display: grid;
    grid-template-columns: 80px 20px 1fr;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 0;
    cursor: pointer;
    position: relative;
}
.tl-row:hover { background: color-mix(in srgb, var(--btn-primary) 8%, transparent); }
.tl-date { font-size: 12px; color: var(--text-muted); text-align: right; padding-top: 2px; }
.tl-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--btn-primary);
    margin: 6px 0 0 5px;
    border: 2px solid var(--bg);
    position: relative;
    z-index: 1;
}
.tl-body { min-width: 0; }
.tl-title { font-size: 14px; color: var(--text-primary); }
.tl-meta { display: flex; gap: 8px; font-size: 11px; margin-top: 2px; flex-wrap: wrap; }
.tl-repo { color: var(--text-muted); }
.tl-status {
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--bg-column);
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.tl-row-overdue .tl-dot { background: var(--btn-danger, #e06060); }
.tl-row-overdue .tl-title { color: var(--btn-danger, #e06060); font-weight: 600; }
.tl-row-near .tl-dot { background: #e6a817; }
.tl-row-near .tl-title { color: #b8860b; font-weight: 600; }
.tl-row-done { opacity: 0.55; }
.tl-row-done .tl-title { text-decoration: line-through; }

/* Gantt view */
.kanban-gantt-wrapper {
    padding: 0;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.gantt-header-bar { display: flex; align-items: center; gap: 8px; padding: 16px 24px 12px; flex-shrink: 0; position: relative; }
.gantt-header-title { position: absolute; left: 0; right: 0; text-align: center; pointer-events: none; }
.gantt-legend { font-size: 11px; color: var(--text-muted); margin-left: auto; }
.gantt-hide-done-toggle { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); cursor: pointer; white-space: nowrap; user-select: none; padding: 6px 8px; }
.gantt-hide-done-toggle input[type="checkbox"] { margin: 0; cursor: pointer; width: 16px; height: 16px; min-width: 16px; }
.gantt-table {
    display: grid;
    grid-template-columns: auto auto;
    align-content: start;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: auto;
    background: var(--bg-card);
    flex: 1;
    min-height: 0;
    margin: 0 24px 16px;
}
.gantt-corner { position: sticky; top: 0; left: 0; z-index: 6; background: var(--bg-header); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); display: flex; align-items: flex-end; justify-content: flex-end; }
.gantt-label-toggle { border: none; background: none; cursor: pointer; color: var(--text-muted); font-size: 10px; padding: 4px 6px; line-height: 1; opacity: 0.6; }
.gantt-label-toggle:hover { opacity: 1; }
.gantt-labels-hidden .gantt-corner,
.gantt-labels-hidden .gantt-row-label { width: 24px !important; min-width: 24px; }
.gantt-labels-hidden .gantt-row-label-text,
.gantt-labels-hidden .gantt-row-grip { display: none; }
.gantt-labels-hidden .gantt-repo-header-label { display: none; }
.gantt-timeline-head { position: sticky; top: 0; z-index: 3; background: var(--bg-header); border-bottom: 1px solid var(--border); }
.gantt-month-row { position: relative; height: 22px; border-bottom: 1px solid var(--border); }
.gantt-month {
    position: absolute;
    top: 0;
    height: 22px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    padding: 4px 6px;
    border-right: 1px solid var(--border);
    box-sizing: border-box;
}
.gantt-day-row { display: flex; height: 22px; }
.gantt-day {
    width: 32px;
    flex: 0 0 32px;
    text-align: center;
    font-size: 10px;
    color: var(--text-muted);
    border-right: 1px solid var(--border);
    line-height: 22px;
    box-sizing: border-box;
}
.gantt-dow-0 { background: color-mix(in srgb, #d14343 8%, transparent); color: #d14343; }
.gantt-dow-6 { background: color-mix(in srgb, #3a83c7 8%, transparent); color: #3a83c7; }
.gantt-day-today { background: color-mix(in srgb, var(--btn-primary) 20%, transparent); color: var(--btn-primary); font-weight: 700; }
.gantt-row-label {
    position: sticky;
    left: 0;
    z-index: 1;
    background: var(--bg-card);
    padding: 3px 6px 3px 0;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    overflow: hidden;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2px;
    height: 30px;
    box-sizing: border-box;
}
.gantt-row-label-text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.gantt-row-grip {
    flex: 0 0 auto;
    cursor: grab;
    color: var(--text-muted);
    font-size: 12px;
    padding: 4px 4px 4px 8px;
    opacity: 0.4;
    user-select: none;
    -webkit-user-select: none;
    line-height: 1;
}
.gantt-row-grip:hover { opacity: 1; }
.gantt-row-dragging { background: color-mix(in srgb, var(--btn-primary) 12%, transparent); opacity: 0.4; }
.gantt-row-drop-indicator {
    position: fixed;
    height: 3px;
    background: var(--btn-primary);
    border-radius: 2px;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s;
}
.gantt-row-drop-indicator.active { opacity: 1; }
.gantt-row-dates { font-size: 10px; color: var(--text-muted); opacity: 0.6; margin-left: 4px; }
.gantt-row-title { font-size: 13px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gantt-row-sub { font-size: 10px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 0; }
.gantt-row-assignee { font-size: 10px; color: var(--accent, #42b983); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 0; }
.gantt-row-track {
    position: relative;
    height: 30px;
    border-bottom: 1px solid var(--border);
    background-image: linear-gradient(to right, var(--border) 1px, transparent 1px);
    background-size: 32px 100%;
}
.gantt-bar {
    display: flex;
    align-items: center;
    position: absolute;
    top: 5px;
    height: 20px;
    background: var(--btn-primary);
    color: #fff;
    font-size: 11px;
    line-height: 20px;
    padding: 0 10px;
    border-radius: 4px;
    cursor: grab;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: filter 0.12s, box-shadow 0.12s;
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    touch-action: none;
}
.gantt-bar:hover { filter: brightness(1.15); box-shadow: 0 2px 8px rgba(0,0,0,0.25); }
.gantt-bar-text { flex: 1; overflow: hidden; text-overflow: ellipsis; pointer-events: none; }
.gantt-bar-dragging { opacity: 0.85; z-index: 5; cursor: grabbing; box-shadow: 0 4px 16px rgba(0,0,0,0.3); }
.gantt-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 10px;
    cursor: col-resize;
    z-index: 2;
    transition: background 0.12s;
    user-select: none;
    -webkit-user-select: none;
}
.gantt-table.is-dragging {
    user-select: none;
    -webkit-user-select: none;
}
.gantt-handle-left { left: 0; border-radius: 4px 0 0 4px; }
.gantt-handle-right { right: 0; border-radius: 0 4px 4px 0; }
.gantt-handle:hover { background: rgba(255,255,255,0.25); }
.gantt-handle::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 10px;
    background: rgba(255,255,255,0.5);
    border-radius: 1px;
}
.gantt-handle-left::after { left: 3px; }
.gantt-handle-right::after { right: 3px; }
.gantt-bar-label {
    position: absolute;
    top: 5px;
    height: 20px;
    line-height: 20px;
    font-size: 11px;
    color: var(--text-primary);
    white-space: nowrap;
    pointer-events: none;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}
.gantt-bar-overdue { background: var(--btn-danger, #e06060); }
.gantt-bar-near { background: #e6a817; }
.gantt-bar-done { background: #888; opacity: 0.6; }
.gantt-today-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--btn-primary);
    opacity: 0.5;
    pointer-events: none;
}
.gantt-drag-tooltip {
    position: fixed;
    z-index: 9999;
    background: var(--bg-header, #263040);
    color: var(--text, #e8eaed);
    font-size: 12px;
    font-weight: 500;
    padding: 6px 10px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    pointer-events: none;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.1s;
}
.gantt-drag-tooltip.active { opacity: 1; }
.gantt-repo-header {
    grid-column: 1 / -1;
    background: var(--bg-column);
    border-bottom: 1px solid var(--border);
    border-top: 2px solid var(--border);
    height: 30px;
    position: sticky;
    top: 44px;
    z-index: 5;
    overflow: visible;
}
.gantt-repo-header-label {
    position: sticky;
    left: 0;
    display: inline-block;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.3px;
    background: var(--bg-column);
    z-index: 2;
    white-space: nowrap;
}
.gantt-table > .gantt-repo-header:nth-child(3) { border-top: none; }
.gantt-empty { padding: 32px; text-align: center; color: var(--text-muted); }

/* Overdue cards: draw attention across kanban, calendar, timeline, gantt. */
.card.card-overdue {
    border-color: var(--btn-danger, #e06060);
    background: color-mix(in srgb, var(--btn-danger, #e06060) 10%, var(--bg-card));
}
.card.card-overdue .card-date-limit {
    border-color: var(--btn-danger, #e06060);
    color: var(--btn-danger, #e06060);
    font-weight: 600;
}
.card.card-near-deadline {
    border-color: #e6a817;
    background: color-mix(in srgb, #e6a817 10%, var(--bg-card));
}
.card.card-near-deadline .card-date-limit {
    border-color: #e6a817;
    color: #b8860b;
    font-weight: 600;
}
.card.card-done {
    opacity: 0.55;
    border-color: var(--border-card);
    background: var(--bg-column);
}
.card.card-done .card-title { text-decoration: line-through; color: var(--text-muted); }

.issue-date-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}
.issue-date-row:last-of-type { margin-bottom: 0; }
.issue-date-label {
    display: inline-block;
    width: 56px;
    font-size: 13px;
    color: var(--text-muted);
    flex: 0 0 auto;
}
.issue-date-input { width: 160px; min-width: 0; max-width: 160px; flex: 0 0 160px; box-sizing: border-box; }
.form-group .issue-date-input { width: 160px; }
.auto-limit-check {
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.auto-limit-check input { margin: 0; vertical-align: middle; }

/* Grid View (Repo x Status) */
.kanban-board-grid-wrapper {
    padding: 0;
    flex: 1;
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
    touch-action: pan-x pan-y;
}
.kanban-grid {
    display: grid;
    gap: 0 12px;
    padding: 0 24px 20px;
}
.kanban-grid .column-header {
    position: sticky;
    top: 0;
    z-index: 3;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}
.grid-repo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-column);
    border-top: 2px solid var(--border);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    touch-action: pan-x pan-y;
    color: var(--text-muted);
    user-select: none;
    position: sticky;
    top: 33px;
    z-index: 2;
    transition: background 0.2s;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
}
.grid-repo-header:hover {
    background: var(--bg-column-hover);
}
.grid-repo-header.repo-drag-over-top::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--btn-primary);
    border-radius: 2px;
    box-shadow: 0 0 6px var(--btn-primary);
    pointer-events: none;
}
.grid-repo-header.repo-drag-over-bottom::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: var(--btn-primary);
    border-radius: 2px;
    box-shadow: 0 0 6px var(--btn-primary);
    pointer-events: none;
}
.grid-repo-header .repo-group-arrow {
    font-size: 9px;
    color: var(--text-faint);
    width: 10px;
    transition: transform 0.2s;
}
.grid-repo-header .repo-group-name {
    flex: 1;
}
.btn-add-issue-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 4px;
    margin-top: 2px;
    background: none;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    color: var(--text-faint);
    font-size: 14px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s, color 0.15s, border-color 0.15s;
}
.grid-cell:hover .btn-add-issue-cell {
    opacity: 1;
}
.btn-add-issue-cell:hover {
    background: var(--accent-hover);
    border-color: var(--accent);
    color: var(--accent);
}
.grid-repo-header .repo-group-count {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-faint);
    background: var(--count-bg);
    padding: 1px 8px;
    border-radius: var(--radius-pill);
}
.grid-repo-header .repo-sync-status {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-faint);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}
.grid-repo-header .repo-group-right {
    position: sticky;
    right: 14px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: inherit;
    padding-left: 10px;
    box-shadow: -6px 0 6px -6px rgba(0,0,0,0.15);
}
.grid-repo-header .repo-sync-status .repo-sync-spin {
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 1.5px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
.grid-repo-header .repo-sync-running { color: var(--text-muted); }
.grid-repo-header .repo-sync-err { color: var(--btn-danger, #e53e3e); font-weight: 600; }
.grid-repo-header .repo-sync-none { color: var(--text-faint); font-style: italic; }
.grid-repo-header.has-sync-error {
    background: color-mix(in srgb, var(--btn-danger, #e53e3e) 12%, var(--bg-column));
    border-left: 3px solid var(--btn-danger, #e53e3e);
    color: var(--btn-danger, #e53e3e);
}
.grid-repo-header.has-sync-error:hover {
    background: color-mix(in srgb, var(--btn-danger, #e53e3e) 18%, var(--bg-column));
}
.grid-cell {
    background: var(--bg-column);
    border-left: 1px solid var(--border);
    padding: 8px;
    min-height: 48px;
    transition: background 0.2s;
    overflow: hidden;
}
.grid-cell:first-of-type {
    border-left: none;
}
.grid-cell.drag-over {
    background: var(--bg-column-hover);
    border-radius: 4px;
}
/* Show top-line indicator for empty cells */
.grid-cell.drag-over:empty {
    box-shadow: inset 0 2px 0 0 var(--accent);
}
/* Drop insertion indicator (CSS-only, no DOM insert) */
.card.drop-before::before {
    content: '';
    display: block;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    margin-bottom: 4px;
    box-shadow: 0 0 4px var(--accent);
    pointer-events: none;
}
.card.drop-after::after {
    content: '';
    display: block;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    margin-top: 4px;
    box-shadow: 0 0 4px var(--accent);
    pointer-events: none;
}
/* Drop indicators for sortable list rows in settings (recurrence/repo) */
.setting-item.drop-before { position: relative; }
.setting-item.drop-after  { position: relative; }
.setting-item.drop-before::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: -2px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    box-shadow: 0 0 4px var(--accent);
    pointer-events: none;
}
.setting-item.drop-after::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    box-shadow: 0 0 4px var(--accent);
    pointer-events: none;
}
.grid-cell.drag-over-reject {
    background: rgba(231, 76, 60, 0.08);
    box-shadow: inset 0 0 0 2px rgba(231, 76, 60, 0.5);
    border-radius: 4px;
    cursor: not-allowed;
}
.grid-cell .card {
    margin-bottom: 6px;
}
.grid-cell .card:last-child {
    margin-bottom: 0;
}

/* Compact cards (grid mode) */
.card-compact {
    padding: 8px 10px;
    overflow: hidden;
}
.card-compact .card-title {
    font-size: 12px;
    line-height: 1.4;
    margin-bottom: 4px;
    word-break: break-word;
}
.card-compact .card-title .card-number {
    white-space: nowrap;
}
.card-compact .card-title .card-close {
    float: right;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
    background: none;
    border: none;
    color: var(--text-faint);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 0 2px;
}
.card-compact:hover .card-title .card-close { opacity: 1; }
.card-compact .card-title .card-close:hover { color: var(--btn-danger-text); }
.card-compact .card-meta {
    font-size: 10px;
}

/* Buttons */
.btn {
    padding: 7px 16px;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
}
.btn:hover { background: var(--btn-hover); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--btn-primary); border-color: var(--btn-primary); color: #fff; border-radius: var(--radius-sm); }
.btn-primary:hover { background: var(--btn-primary-hover); box-shadow: 0 2px 8px rgba(66,185,131,0.3); }
.btn-danger { border-color: var(--btn-danger); color: var(--btn-danger-text); }
.btn-danger:hover { background: var(--btn-danger); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-disabled, .btn:disabled { opacity: 0.35; cursor: default; pointer-events: none; }

/* Form Elements */
.select {
    padding: 8px 12px;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text);
    font-size: 13px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-hover);
}
.toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
}
.toggle input { cursor: pointer; }

/* Modal Actions */
.modal-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 12px;
}

/* Repo Picker */
.repo-picker-header {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}
.repo-picker-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}
.repo-picker-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    border-bottom: 1px solid var(--border-card);
    transition: background 0.15s;
}
.repo-picker-item:last-child { border-bottom: none; }
.repo-picker-item:hover { background: var(--bg-column-hover); }
.repo-picker-item.disabled { opacity: 0.5; cursor: default; }
.repo-picker-item input { cursor: pointer; }
.repo-picker-item .label { margin-left: auto; }

/* Card Number */
.card-number {
    color: var(--text-dimmed);
    font-weight: 500;
    margin-right: 4px;
    font-size: 12px;
}

/* Drag Handle (repo sort) */
.drag-handle {
    cursor: grab;
    color: var(--text-faint);
    font-size: 14px;
    user-select: none;
}
.repo-sortable { cursor: default; transition: background 0.15s; }
.repo-sortable:active .drag-handle { cursor: grabbing; }
.repo-sortable.drag-over { background: var(--bg-column-hover); outline: 2px solid var(--btn-primary); outline-offset: -2px; }
.repo-unregistered { color: var(--text-muted); }

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--modal-overlay);
    justify-content: center;
    align-items: flex-start;
    padding-top: 60px;
    backdrop-filter: blur(4px);
}
.modal.active { display: flex; }
.modal-content {
    background: var(--bg-modal);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    width: 560px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    animation: modalIn 0.2s ease-out;
    display: flex;
    flex-direction: column;
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(-12px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-card);
    position: sticky;
    top: 0;
    background: var(--bg-modal);
    z-index: 1;
    flex-shrink: 0;
}
.modal-header h2 { margin: 0; font-size: 18px; font-weight: 700; }
.modal-title { flex: 1; min-width: 0; }
.modal-subtitle { font-size: 12px; color: var(--text-muted); margin-top: 4px; word-break: break-all; line-height: 1.3; text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
.modal-subtitle:hover { color: var(--accent); }
.modal-link-icon { font-size: 11px; opacity: 0.5; }
.modal-subtitle:hover .modal-link-icon { opacity: 1; }
.btn-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    transition: background 0.15s;
}
.btn-close:hover { background: var(--btn-hover); }
.modal-body {
    padding: 20px 24px;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
    -webkit-overflow-scrolling: touch;
}
.modal-body h3 {
    font-size: 13px;
    color: var(--text-dimmed);
    margin: 24px 0 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}
.modal-body h3:first-child { margin-top: 0; }

/* Settings Tabs */
.settings-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-card);
    padding: 0 24px;
    gap: 0;
    flex-shrink: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.settings-tabs::-webkit-scrollbar { display: none; }
.settings-tab {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}
.settings-tab:hover { color: var(--text-primary); }
.settings-tab.active { color: var(--text-primary); border-bottom-color: var(--btn-primary); }
.settings-panel { display: none; }
.settings-panel.active { display: block; }

/* GitHub Activity Monitoring */
.gh-stat-card {
    background: var(--bg-column);
    border-radius: var(--radius-sm);
    padding: 12px;
    text-align: center;
}
.gh-stat-value { font-size: 24px; font-weight: 700; color: var(--text-primary); }
.gh-stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.gh-stat-error { color: var(--btn-danger, #e53935); }
.gh-stat-warn { color: var(--status-wait, #fb8c00); }
.ghact-tab { opacity: 0.6; }
.ghact-tab.active { opacity: 1; font-weight: 600; }
.gh-activity-row {
    display: grid;
    grid-template-columns: 64px 86px 60px 56px minmax(0,1fr) 48px 56px;
    gap: 6px;
    padding: 4px 0;
    border-bottom: 1px solid var(--border-card);
    font-size: 12px;
    align-items: center;
}
.gh-activity-row.gh-error { color: var(--btn-danger, #e53935); }
.gh-activity-row .gh-url {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    opacity: 0.7;
}
.gh-activity-row .gh-account,
.gh-activity-row .gh-resource {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 11px;
}

/* Chart legend */
.gh-chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 6px;
    font-size: 12px;
}
.gh-chart-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.gh-chart-legend-swatch {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 2px;
}

/* Theme Picker */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    margin-top: 12px;
}
.theme-card {
    border: 2px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 10px;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.15s, box-shadow 0.2s;
    background: var(--bg-card);
}
.theme-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.theme-card.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-hover);
}
.theme-card-preview {
    display: flex;
    gap: 4px;
    height: 40px;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}
.theme-card-preview span {
    flex: 1;
}
.theme-card-label {
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.theme-card-accent {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 4px;
    flex-shrink: 0;
}

/* Settings Items */
.setting-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-card);
}
.avatar { border-radius: 50%; }
.text-muted { color: var(--text-faint); font-size: 13px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--text-muted); font-weight: 500; }
.form-group .select,
.form-group textarea { width: 100%; padding: 10px 12px; }
textarea.select {
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border-input);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
}

.add-repo-form {
    display: flex;
    gap: 8px;
    align-items: center;
    margin: 10px 0;
}
.add-repo-form .select,
.add-repo-form input {
    flex: 1;
}

/* Calendar loading overlay */
.cal-loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-muted);
    font-size: 15px;
}

/* Loading */
.loading {
    color: var(--text-muted);
    padding: 60px 40px;
    text-align: center;
    font-size: 15px;
}

/* Loading spinner */
@keyframes spin {
    to { transform: rotate(360deg); }
}
.loading-spinner::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}
.loading-inline {
    display: inline-flex;
    align-items: center;
    color: var(--text-muted);
    font-size: 12px;
}

/* Background refresh indicator */
.refresh-indicator {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    color: var(--text-dimmed);
    transition: opacity 0.3s;
}
.refresh-indicator::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 4px;
}

/* Optimistic card states */
.card-saving {
    opacity: 0.6;
    pointer-events: none;
}
.card-saving::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 12px;
    height: 12px;
    border: 1.5px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
.card {
    position: relative;
}
.card-error {
    border-left: 3px solid #e74c3c;
}

/* Section loading */
.section-loading {
    color: var(--text-muted);
    padding: 16px;
    text-align: center;
    font-size: 13px;
}

/* Skeleton loading for settings */
@keyframes shimmer {
    0% { background-position: -200px 0; }
    100% { background-position: 200px 0; }
}
.skeleton-item {
    height: 36px;
    background: linear-gradient(90deg, var(--bg-column) 25%, var(--bg-column-hover) 50%, var(--bg-column) 75%);
    background-size: 400px 100%;
    animation: shimmer 1.2s ease-in-out infinite;
    border-radius: var(--radius);
    margin-bottom: 6px;
}

/* Toast notification for background errors */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-size: 13px;
    color: #fff;
    z-index: 10000;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
}
.toast.show {
    opacity: 1;
    transform: translateY(0);
}
.toast-error {
    background: #e74c3c;
}
.toast-success {
    background: var(--btn-primary);
}

/* FAB (Floating Action Button) */
.fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}
.fab {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--btn-primary);
    color: #fff;
    border: none;
    font-size: 24px;
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}
.fab:hover { transform: scale(1.1); box-shadow: 0 6px 16px rgba(0,0,0,0.4); }
.fab.active { transform: rotate(45deg); }
.fab-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s, transform 0.2s;
}
.fab-menu.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.fab-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    transition: background 0.15s;
}
.fab-menu-item:hover { background: var(--btn-hover); }
.fab-menu-icon { font-size: 16px; }

/* Mobile visibility helpers */
.show-on-mobile { display: none !important; }
.hide-on-mobile { display: flex; }

/* ===== Responsive ===== */

@media (max-width: 768px) {
    .show-on-mobile { display: flex !important; }
    .hide-on-mobile { display: none !important; }

    body { font-size: 13px; }

    .kanban-header {
        gap: 8px;
        padding: 10px 14px;
    }
    .header-left, .header-right {
        gap: 6px;
    }
    .header-left { min-width: 0; flex: 1; }
    .header-left .select { min-width: 0; flex: 1; font-size: 12px; }
    .logo { font-size: 18px; }
    .logo-icon { width: 26px; height: 26px; }
    .user-name { display: none; }
    .sync-timestamp { font-size: 10px; }
    .sync-status-label { max-width: 60px; overflow: hidden; text-overflow: ellipsis; }

    .kanban-toolbar {
        flex-wrap: wrap;
        gap: 6px;
        padding: 8px 12px;
    }
    .kanban-toolbar .select {
        flex: 1 1 auto;
        min-width: 0;
        font-size: 12px;
    }
    .kanban-toolbar .btn-primary { display: none; }
    .sync-area {
        align-items: center;
        gap: 6px;
    }
    .sync-timestamp { font-size: 10px; }

    .card {
        padding: 8px 10px;
    }
    .card-title { font-size: 12px; }
    .card-repo { font-size: 10px; }

    /* Modal full-screen on mobile */
    .modal-content {
        width: 100%;
        max-width: 100%;
        max-height: 100dvh;
        height: 100dvh;
        border-radius: 0;
        margin: 0;
    }
    .modal {
        padding-top: 0;
        align-items: stretch;
    }

    /* Grid view on mobile */
    .kanban-board-grid-wrapper {
        -webkit-overflow-scrolling: touch;
    }
    .kanban-grid {
        font-size: 12px;
        padding: 0 8px 8px;
        gap: 0 8px;
    }
    .grid-repo-header {
        font-size: 11px;
        padding: 6px 8px;
    }
    .grid-repo-header .repo-sync-status {
        font-size: 10px;
    }
    .grid-cell {
        padding: 4px;
    }

    /* Settings form stacking */
    .add-repo-form {
        flex-wrap: wrap;
    }
    .repo-picker-header {
        flex-direction: column;
    }

    /* View switcher */
    .view-tab { padding: 8px 0; font-size: 12px; }

    /* Calendar view */
    .kanban-calendar-wrapper { padding: 8px 10px; }
    .cal-header { gap: 4px; grid-template-columns: auto auto auto; justify-content: space-between; }
    .cal-header-left, .cal-header-right { gap: 4px; }
    .cal-header-center { gap: 4px; }
    .cal-title { font-size: 13px; }
    .cal-header .cal-title { min-width: 0; }
    .cal-weekday { padding: 4px 2px; font-size: 10px; min-width: 0; }
    .cal-cell { padding: 3px; min-width: 0; overflow: hidden; }
    .cal-date { font-size: 11px; }
    .cal-badges { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px; max-width: 100%; }
    .cal-badge { font-size: 10px; width: 100%; max-width: 28px; padding: 1px 0; border-radius: 10px; }
    /* Week view: keep wide columns on mobile, allow horizontal scroll */
    .week-day-col { width: 160px; min-width: 160px; }
    .week-col-header { padding: 6px 2px; }
    .week-day-label { font-size: 10px; }
    .week-day-num { font-size: 13px; }

    /* Timeline view: compact spacing */
    .kanban-timeline-wrapper { padding: 12px 14px; }
    .tl-container::before { left: 62px; }
    .tl-section-title { margin-left: 76px; }
    .tl-row { grid-template-columns: 60px 16px 1fr; gap: 6px; padding: 6px 0; }
    .tl-date { font-size: 11px; }
    .tl-title { font-size: 13px; }

    /* Gantt view: keep the label column on screen while the bars scroll */
    .kanban-gantt-wrapper { padding: 0; }
    .gantt-header-bar { padding: 8px 8px 6px; flex-wrap: wrap; gap: 4px 6px; }
    .gantt-header-bar .btn { white-space: nowrap; }
    .gantt-header-title { font-size: 13px; white-space: nowrap; }
    .gantt-hide-done-toggle { width: 100%; order: 10; display: flex; justify-content: flex-end; white-space: nowrap; }
    .gantt-table { position: relative; margin: 0; border-radius: 0; border-left: none; border-right: none; }
    .gantt-corner, .gantt-row-label {
        position: sticky;
        left: 0;
        z-index: 1;
        background: var(--bg-card);
        width: 140px !important;
    }
    .gantt-corner { background: var(--bg-header); z-index: 6; }
    .gantt-row-title { font-size: 12px; }
    .gantt-row-sub { font-size: 9px; }
    .gantt-row-assignee { font-size: 9px; }
    .gantt-day { width: 28px; flex: 0 0 28px; }
    .gantt-row-track { height: 28px; background-size: 28px 100%; }
    .gantt-bar { height: 18px; line-height: 18px; top: 5px; font-size: 10px; padding: 0 6px; }
}