:root {
    /* Color System (Dark Theme Default) */
    /* Base RGB Channels for Alpha Support */
    --bg-root-rgb: 15 23 42;
    /* #0f172a */
    --bg-surface-rgb: 30 41 59;
    /* #1e293b */
    --primary-rgb: 59 130 246;
    /* #3b82f6 */

    --bg-root: rgb(var(--bg-root-rgb));
    --bg-root-gradient: linear-gradient(135deg, rgb(var(--bg-root-rgb)) 0%, rgb(30 41 59) 100%);
    --bg-surface: rgb(var(--bg-surface-rgb));
    --bg-surface-hover: #334155;
    --bg-element: #334155;
    --bg-element-hover: #475569;

    --bg-column: var(--bg-surface);

    --border: #334155;
    --border-hover: #475569;

    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --text-inverse: #ffffff;

    --primary: rgb(var(--primary-rgb));
    --primary-hover: #2563eb;

    /* Dynamic Alpha Variants */
    --primary-dim: rgb(var(--primary-rgb) / 0.15);
    --shadow-color-primary: rgb(var(--primary-rgb) / 0.5);

    --success: #10b981;
    --error: #f43f5e;
    --warning: #f59e0b;

    /* Tag colors */
    --tag-red: #f43f5e;
    --tag-orange: #f97316;
    --tag-amber: #f59e0b;
    --tag-green: #10b981;
    --tag-cyan: #06b6d4;
    --tag-blue: #3b82f6;
    --tag-purple: #8b5cf6;
    --tag-pink: #ec4899;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --glass-bg: rgb(30 41 59 / 0.7);
    --glass-border: rgb(255 255 255 / 0.08);

    /* Spacing Tokens */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-base: 16px;
    --space-lg: 20px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 40px;

    /* Z-Index Tokens */
    --z-nav: 50;
    --z-dropdown: 100;
    --z-modal: 1000;

    /* Dimensions */
    --nav-height: 56px;
    --sidebar-width: 260px;
    --column-width: 280px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* Light Theme Variables */
@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        /* Base RGB Channels */
        --bg-root-rgb: 249 250 251;
        /* #f9fafb */
        --bg-surface-rgb: 255 255 255;
        /* #ffffff */
        --primary-rgb: 79 70 229;
        /* #4f46e5 (Indigo) */

        --bg-root: rgb(var(--bg-root-rgb));
        --bg-root-gradient: linear-gradient(135deg, rgb(var(--bg-root-rgb)) 0%, rgb(243 244 246) 100%);
        --bg-surface: rgb(var(--bg-surface-rgb));
        --bg-surface-hover: #f9fafb;
        --bg-element: #ffffff;
        --bg-element-hover: #f8fafc;

        --bg-column: #f3f4f6;

        --border: #e5e7eb;
        --border-hover: #d1d5db;

        --text-main: #111827;
        --text-muted: #6b7280;
        --text-dim: #9ca3af;

        --primary: rgb(var(--primary-rgb));
        --primary-hover: #4338ca;

        /* Dynamic Alpha Variants */
        --primary-dim: rgb(var(--primary-rgb) / 0.1);
        --shadow-color-primary: rgb(var(--primary-rgb) / 0.5);

        --glass-bg: rgb(255 255 255 / 0.8);
        --glass-border: rgb(0 0 0 / 0.05);

        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.06);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05);
    }
}

/* Force Light Mode */
html[data-theme="light"] {
    /* Base RGB Channels */
    --bg-root-rgb: 249 250 251;
    /* #f9fafb */
    --bg-surface-rgb: 255 255 255;
    /* #ffffff */
    --primary-rgb: 79 70 229;
    /* #4f46e5 (Indigo) */

    --bg-root: rgb(var(--bg-root-rgb));
    --bg-root-gradient: linear-gradient(135deg, rgb(var(--bg-root-rgb)) 0%, rgb(243 244 246) 100%);
    --bg-surface: rgb(var(--bg-surface-rgb));
    --bg-surface-hover: #f9fafb;
    --bg-element: #ffffff;
    --bg-element-hover: #f8fafc;

    --bg-column: #f3f4f6;

    --border: #e5e7eb;
    --border-hover: #d1d5db;

    --text-main: #111827;
    --text-muted: #6b7280;
    --text-dim: #9ca3af;

    --primary: rgb(var(--primary-rgb));
    --primary-hover: #4338ca;

    /* Dynamic Alpha Variants */
    --primary-dim: rgb(var(--primary-rgb) / 0.1);
    --shadow-color-primary: rgb(var(--primary-rgb) / 0.5);

    --glass-bg: rgb(255 255 255 / 0.8);
    --glass-border: rgb(0 0 0 / 0.05);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.06);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -2px rgb(0 0 0 / 0.05);
}

/* Force Dark Mode */
html[data-theme="dark"] {
    /* Base RGB Channels */
    --bg-root-rgb: 15 23 42;
    /* #0f172a */
    --bg-surface-rgb: 30 41 59;
    /* #1e293b */
    --primary-rgb: 59 130 246;
    /* #3b82f6 */

    --bg-root: rgb(var(--bg-root-rgb));
    --bg-root-gradient: linear-gradient(135deg, rgb(var(--bg-root-rgb)) 0%, rgb(30 41 59) 100%);
    --bg-surface: rgb(var(--bg-surface-rgb));
    --bg-surface-hover: #334155;
    --bg-element: #334155;
    --bg-element-hover: #475569;

    --bg-column: var(--bg-surface);

    --border: #334155;
    --border-hover: #475569;

    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    --primary: rgb(var(--primary-rgb));
    --primary-hover: #2563eb;

    /* Dynamic Alpha Variants */
    --primary-dim: rgb(var(--primary-rgb) / 0.15);
    --shadow-color-primary: rgb(var(--primary-rgb) / 0.5);

    --glass-bg: rgb(30 41 59 / 0.7);
    --glass-border: rgb(255 255 255 / 0.08);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}


/* Base Setup */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-root);
    background-image: var(--bg-root-gradient);
    background-attachment: fixed;
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    font-weight: 600;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

/* Navigation */
nav {
    height: var(--nav-height);
    background-color: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: var(--z-nav);
}

nav a {
    color: var(--text-muted);
    font-weight: 500;
    margin-inline-start: var(--space-xl);
    font-size: 14px;
}

nav a:first-child {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 14px;
    margin-left: 0;
    letter-spacing: -0.01em;
}

nav a:first-child:hover {
    color: var(--text-main);
}

nav a:hover {
    color: var(--text-main);
    text-decoration: none;
}

/* Buttons */
.btn,
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    font-family: inherit;
    line-height: 1.4;
}

.btn:active,
button:active {
    transform: scale(0.98);
}

.btn-primary,
button[type="submit"] {
    background-color: var(--primary);
    background-image: linear-gradient(to bottom right, rgba(255, 255, 255, 0.1), rgba(0, 0, 0, 0.05));
    color: var(--text-inverse);
    box-shadow: 0 0 0 1px var(--shadow-color-primary), 0 1px 3px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover,
button[type="submit"]:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-element);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--border-hover);
}

/* Forms */
input,
textarea {
    background: var(--bg-root);
    border: 1px solid var(--border);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 14px;
    font-family: inherit;
    margin-block-end: var(--space-md);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-dim), 0 0 12px var(--primary-dim);
}

input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--bg-root);
    opacity: 0.5;
    cursor: not-allowed;
    color: var(--text-muted);
    border-color: var(--border);
}

/* Dashboard & Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-xl);
}

.scrollable-wrapper {
    overflow-y: auto;
    height: calc(100vh - var(--nav-height));
    width: 100%;
}

.dashboard-controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    gap: var(--space-md);
}

.dashboard-controls label {
    margin-bottom: 0;
}

.sort-options {
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-surface);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.sort-btn {
    padding: 4px 12px;
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 500;
}

.sort-btn.active {
    background: var(--bg-element);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

/* Board Grid */
.board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.board-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    height: 120px;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.board-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.board-card-create {
    border: 1px dashed var(--border);
    background: transparent;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.board-card-create:hover {
    border-color: var(--primary);
    background: var(--bg-surface-hover);
    transform: translateY(-2px);
}

.create-board-form {
    width: 100%;
    text-align: center;
}

.create-board-label {
    color: var(--text-muted);
    font-size: 14px;
    margin-block-end: var(--space-md);
    display: block;
}

.create-board-input-group {
    display: flex;
    gap: var(--space-sm);
}

.create-board-input {
    background: var(--bg-root);
    border: 1px solid var(--border);
    margin-bottom: 20px;
}

.create-board-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-dim);
}

.board-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: auto;
}

.board-card-meta {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 12px;
}

/* Board Layout (Sidebar + Columns) */
.board-wrapper {
    display: grid;
    grid-template-columns: 1fr auto;
    height: calc(100vh - var(--nav-height));
    overflow: hidden;
}

.board-main {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    grid-column: 1;
    background-color: var(--bg-root);
}

.board-header {
    height: 60px;
    padding: 0 24px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.edit-title-input {
    background: var(--bg-root);
    border: 1px solid var(--primary);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-family: inherit;
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-dim);
    flex-grow: 1;
    margin-right: 12px;
    line-height: 1.5;
    box-sizing: border-box;
}

.edit-board-title {
    padding: 6px 12px !important;
    min-height: 37px;
    margin-right: 12px;
}

.header-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    padding: 6px 12px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-right: 12px;
    line-height: 24px;
    box-sizing: border-box;
    display: inline-block;
    min-height: 37px;
}

.header-title:hover {
    background: var(--bg-element);
    border-color: var(--border);
}

.board-container {
    display: flex;
    overflow-x: auto;
    padding: var(--space-xl);
    gap: var(--space-base);
    height: 100%;
    align-items: flex-start;
}

/* Columns */
.column {
    background: var(--bg-column);
    width: var(--column-width);
    min-width: var(--column-width);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 12px 8px 12px 12px;
    /* Reduced right padding to balance scrollbar margins */
    display: flex;
    flex-direction: column;
    height: auto;
    max-height: 100%;
}

.column-header {
    padding: 8px 4px 12px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.column-menu-btn {
    cursor: pointer;
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1;
    user-select: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.column-menu-btn:hover {
    background: var(--bg-element);
    color: var(--text-main);
}

.column-menu-dropdown {
    position: absolute;
    top: 40px;
    right: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-dropdown);
    width: 160px;
    padding: 4px;
    animation: fadeIn 0.1s ease-out;
}

.column-menu-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-main);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    font-family: inherit;
}

.column-menu-item:hover {
    background: var(--bg-element);
}

.column-menu-item.delete-option {
    color: var(--error);
}

.column-menu-item.delete-option:hover {
    background: rgba(244, 63, 94, 0.1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.cards-container {
    overflow-y: auto;
    min-height: 20px;
    padding: 12px 14px 12px 10px;
    /* Equal margins with centered scrollbar */
}

/* Card Items */
.card {
    background: var(--bg-element);
    padding: 10px 12px;
    margin-block-end: var(--space-md);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    cursor: grab;
    border: 1px solid transparent;
    transition: all 0.2s;
    color: var(--text-main);
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    background: var(--bg-element-hover);
    box-shadow: var(--shadow-md);
}

.card:active {
    cursor: grabbing;
}

.card-title {
    font-weight: 500;
    font-size: 14px;
    line-height: 1.4;
}

.card-metadata {
    display: flex;
    gap: var(--space-sm);
    margin-top: 6px;
    align-items: center;
}

.card-desc-icon,
.card-comment-icon,
.card-attachment-icon {
    font-size: 12px;
    color: var(--text-dim);
}

/* Sidebar */
.board-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-inline-start: 1px solid var(--border);
    grid-column: 2;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
}

.board-sidebar.collapsed {
    width: 0;
    border: none;
}

.sidebar-section {
    width: var(--sidebar-width);
    padding: 20px;
    box-sizing: border-box;
    /* Ensure content doesn't shift when parent shrinks */
}

.sidebar-header {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    margin-block-end: var(--space-md);
}

/* Board Specifics */
.description-content {
    background: transparent;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-muted);
    border: 1px solid transparent;
    transition: background-color 0.2s, border-color 0.2s;
    cursor: pointer;
}

.description-content:hover {
    background-color: var(--bg-element);
    border-color: var(--border);
    color: var(--text-main);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    background-color: var(--bg-element);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar-toggle-btn {
    background: var(--bg-element);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.sidebar-toggle-btn:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
    transform: scale(1.05);
    color: var(--primary);
}

/* Modals */
.modal-overlay {
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    transition: opacity 0.2s;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    /* Centering */
    align-items: center;
    justify-content: center;
    padding-top: 0;
}

.modal-content {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
    color: var(--text-main);
    width: 100%;
    max-width: 500px;
    padding: var(--space-xl);
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-content>h2 {
    margin-bottom: var(--space-lg);
}

/* Card modal needs reduced right padding for scrollbar */
#cardModal .modal-content {
    padding-inline-end: var(--space-sm);
}

.modal-scroll-wrapper {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    padding-inline-end: var(--space-sm);
    /* Space between content and scrollbar */
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    pointer-events: none;
}

.toast {
    background: var(--bg-surface);
    color: var(--text-main);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 300px;
    max-width: 400px;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto;
    font-size: 14px;
    font-weight: 500;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    flex-shrink: 0;
    font-size: 12px;
    font-weight: bold;
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-success .toast-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

.toast-error .toast-icon {
    background: rgba(244, 63, 94, 0.1);
    color: var(--error);
}

.toast-info {
    border-left: 4px solid var(--primary);
}

.toast-info .toast-icon {
    background: var(--primary-dim);
    color: var(--primary);
}



#modalCardTitle {
    color: var(--text-main);
    font-size: 20px;
    margin-right: 40px;
    padding: 6px 8px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    line-height: 1.5;
}

#modalCardTitle:hover {
    background-color: var(--bg-element);
    border-color: var(--border);
}

.edit-card-input {
    background: var(--bg-root);
    border: 1px solid var(--primary);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 6px 8px;
    font-family: inherit;
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-dim);
    display: block;
    line-height: 1.5;
    margin-bottom: 8px;
    /* space between inputs */
}

.edit-card-title {
    font-size: 20px;
    font-weight: 700;
    width: calc(100% - 50px);
    /* Explicit clearance for close button */
    margin: 0;
    /* Match title margin */
}

.edit-card-desc {
    font-size: 14px;
    min-height: 100px;
    width: 100%;
}

#modalCardDesc {
    font-size: 14px;
    padding: 6px 8px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    line-height: 1.5;
    min-height: 60px;
    color: var(--text-muted);
}

/* Utility Classes for Dynamic Elements */

/* Edit inputs */
.edit-description-input {
    background: var(--bg-root);
    border: 2px solid var(--primary);
    color: var(--text-main);
    border-radius: 3px;
    padding: 8px;
    font-family: inherit;
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-dim);
    width: 100%;
    box-sizing: border-box;
    resize: none;
    min-height: 60px;
}

.edit-card-field-input {
    background: var(--bg-root);
    border: 1px solid var(--primary);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-family: inherit;
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-dim);
    box-sizing: border-box;
    resize: none;
}

/* Visibility utilities */
.hidden {
    display: none !important;
}

.visible-block {
    display: block !important;
}

.visible-flex {
    display: flex !important;
}

/* Cursor states */
.cursor-grabbing {
    cursor: grabbing !important;
}

.cursor-default {
    cursor: default !important;
}

/* Disable transitions temporarily */
.no-transition {
    transition: none !important;
}


#modalCardDesc:hover {
    background-color: var(--bg-element);
    border-color: var(--border);
    cursor: pointer;
}

.edit-field:hover {
    background-color: var(--bg-element);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    z-index: 10;
}

.modal-close:hover {
    color: var(--text-main);
}

/* Bulk Add Modal */
.bulk-add-instructions {
    color: var(--text-muted);
    margin-bottom: 20px;
}

#bulkAddInput {
    min-height: 200px;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: var(--space-lg);
}

.btn-cancel {
    padding: 8px 16px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 500;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background-color: var(--bg-element);
    color: var(--text-main);
}

/* Profile Page */
.profile-container {
    max-width: 600px;
    margin: 40px auto;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-md);
}

.profile-title {
    margin-bottom: 24px;
    font-size: 24px;
}

.avatar-section {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    background-color: var(--bg-element);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border);
    flex-shrink: 0;
}

.avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-large span {
    font-size: 32px;
    color: var(--text-muted);
    font-weight: 600;
}

.profile-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.label-bold {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-main);
    font-size: 13px;
}

.input-full {
    width: 100%;
}

.file-input {
    padding: 6px;
    font-size: 13px;
}

.section-title {
    font-size: 16px;
    margin-bottom: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    color: var(--text-main);
}

.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.theme-preference-section {
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 8px;
}

.theme-option {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-element);
    cursor: pointer;
    transition: all 0.2s;
}

.theme-option:hover {
    border-color: var(--primary);
    background: var(--bg-element-hover);
}

.theme-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
}

.theme-option input[type="radio"]:checked+span {
    color: var(--primary);
    font-weight: 600;
}

.theme-option input[type="radio"]:checked~* {
    color: var(--primary);
}

.theme-option input[type="radio"]:checked {
    &~* {
        border-color: var(--primary);
    }
}

.theme-option:has(input[type="radio"]:checked) {
    border-color: var(--primary);
    background: var(--primary-dim);
}

.theme-option span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 4px;
}

.theme-option small {
    font-size: 12px;
    color: var(--text-muted);
}


.link-muted {
    color: var(--text-muted);
    font-size: 13px;
}

.link-muted:hover {
    color: var(--text-main);
}

.alert-error {
    background: rgba(244, 63, 94, 0.1);
    color: var(--error);
    padding: 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-box {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    max-width: 400px;
    margin: 60px auto;
}

.form-box h2 {
    margin-bottom: 24px;
}

/* Utilities */
.text-primary {
    color: var(--primary);
}

.error {
    color: var(--error);
}

::-webkit-scrollbar {
    width: 8px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-element);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

::selection {
    background: var(--primary-dim);
    color: inherit;
}


/* Drag & Drop Styles */
.card-placeholder {
    background: transparent;
    border: none;
    border-top: 2px dashed var(--primary);
    margin: -1px 0;
    height: 0;
    box-sizing: border-box;
    opacity: 0.5;
    pointer-events: none;
    transform: translateY(-6px);
    animation: placeholderIn 0.2s ease-out forwards, pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}



@keyframes placeholderIn {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 0.5;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.4;
    }

    50% {
        opacity: 0.7;
    }
}

.placeholder-exit {
    animation: placeholderOut 0.05s ease-in forwards !important;
    pointer-events: none;
}

@keyframes placeholderOut {
    0% {
        opacity: 0.5;
    }

    100% {
        opacity: 0;
    }
}

.column-placeholder {
    width: 0;
    min-width: 0;
    flex-basis: 0;
    background: transparent;
    border: none;
    margin: 0 -8px;
    height: 100%;
    opacity: 0.5;
    flex-shrink: 0;
    pointer-events: none;
    position: relative;
}

.column-placeholder::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: -1px;
    width: 0;
    border-left: 2px dashed var(--primary);
}

.dragging {
    opacity: 0.5;
    /* Optional: hide original if you want perfectly clean move effect */
    /* opacity: 0; */
}

/* Tags */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 8px;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    transition: transform 0.1s ease;
}

.tag-pill:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.tag-color-red {
    background-color: var(--tag-red);
    color: white;
}

.tag-color-orange {
    background-color: var(--tag-orange);
    color: white;
}

.tag-color-amber {
    background-color: var(--tag-amber);
    color: white;
}

.tag-color-green {
    background-color: var(--tag-green);
    color: white;
}

.tag-color-cyan {
    background-color: var(--tag-cyan);
    color: white;
}

.tag-color-blue {
    background-color: var(--tag-blue);
    color: white;
}

.tag-color-purple {
    background-color: var(--tag-purple);
    color: white;
}

.tag-color-pink {
    background-color: var(--tag-pink);
    color: white;
}

/* Sidebar Tags */
.sidebar-tag-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.sidebar-tag-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.sidebar-tag-item:hover {
    background-color: var(--bg-element);
}

.sidebar-tag-item .tag-pill {
    cursor: pointer;
}

.delete-tag-btn {
    opacity: 0;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: all 0.2s;
}

.sidebar-tag-item:hover .delete-tag-btn {
    opacity: 1;
}

.delete-tag-btn:hover {
    color: var(--error);
}

.add-tag-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.add-tag-btn:hover {
    background-color: var(--primary-dim);
}

/* Member List Styles */
.member-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.member-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.member-item:hover {
    background-color: var(--bg-element);
}

.member-item .user-name {
    flex: 1;
    font-size: 13px;
    color: var(--text-main);
}

.delete-member-btn {
    opacity: 0;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: all 0.2s;
    margin-left: auto;
}

.member-item:hover .delete-member-btn {
    opacity: 1;
}

.delete-member-btn:hover {
    color: var(--error);
}

.add-member-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.add-member-btn:hover {
    background-color: var(--primary-dim);
}

/* Modal Tag Selection */
.modal-tags-section {
    margin-top: 16px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.modal-footer-actions {
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.modal-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.modal-tag-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-option {
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    color: var(--text-muted);
    transition: all 0.2s;
    background: var(--bg-element);
}

.tag-option:hover {
    border-color: var(--border);
    color: var(--text-main);
}

.tag-option.selected {
    border-color: transparent;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.tag-option.selected.tag-color-red {
    background-color: var(--tag-red);
    color: white;
}

.tag-option.selected.tag-color-orange {
    background-color: var(--tag-orange);
    color: white;
}

.tag-option.selected.tag-color-amber {
    background-color: var(--tag-amber);
    color: white;
}

.tag-option.selected.tag-color-green {
    background-color: var(--tag-green);
    color: white;
}

.tag-option.selected.tag-color-cyan {
    background-color: var(--tag-cyan);
    color: white;
}

.tag-option.selected.tag-color-blue {
    background-color: var(--tag-blue);
    color: white;
}

.tag-option.selected.tag-color-purple {
    background-color: var(--tag-purple);
    color: white;
}

.tag-option.selected.tag-color-pink {
    background-color: var(--tag-pink);
    color: white;
}

/* Color Palette Selector */
.color-palette {
    display: flex;
    gap: 8px;
    margin: 20px 0;
}

.color-option {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.2s;
    position: relative;
}

.color-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    margin: 0;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option:has(input:checked),
.color-option.selected {
    border-color: var(--text-main);
}

.color-option:has(input:focus-visible) {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Tag colors for selector */
.bg-red {
    background-color: var(--tag-red);
}

.bg-orange {
    background-color: var(--tag-orange);
}

.bg-amber {
    background-color: var(--tag-amber);
}

.bg-green {
    background-color: var(--tag-green);
}

.bg-cyan {
    background-color: var(--tag-cyan);
}

.bg-blue {
    background-color: var(--tag-blue);
}

.bg-purple {
    background-color: var(--tag-purple);
}

.bg-pink {
    background-color: var(--tag-pink);
}

/* Tag pill colors (matching picker colors above) */
.tag-color-red {
    background-color: var(--tag-red);
    color: white;
}

.tag-color-orange {
    background-color: var(--tag-orange);
    color: white;
}

.tag-color-amber {
    background-color: var(--tag-amber);
    color: white;
}

.tag-color-green {
    background-color: var(--tag-green);
    color: white;
}

.tag-color-cyan {
    background-color: var(--tag-cyan);
    color: white;
}

.tag-color-blue {
    background-color: var(--tag-blue);
    color: white;
}

.tag-color-purple {
    background-color: var(--tag-purple);
    color: white;
}

.tag-color-pink {
    background-color: var(--tag-pink);
    color: white;
}

.column-name-highlight {
    color: var(--primary);
    font-weight: 500;
    margin-left: 8px;
    font-size: 0.9em;
}

/* Assignee Styles */
.card-assignee {
    display: flex;
    justify-content: flex-end;
    margin-top: 8px;
}

.user-avatar-mini {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
}

.user-avatar-placeholder-mini {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-dim);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    border: 1px solid var(--border);
}

.modal-section-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-tag-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.assignee-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 20px;
    background: var(--bg-root);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 13px;
    user-select: none;
}

.assignee-option:hover {
    background: var(--bg-element);
    border-color: var(--primary-dim);
}

.assignee-option.selected {
    background: var(--primary-dim);
    border-color: var(--primary);
    color: var(--primary);
}

.user-avatar-small {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-placeholder {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--bg-element);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
}

/* Attachments Styling */
.attachments-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.attachments-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.attachment-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--bg-element);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.attachment-item:hover {
    background: var(--bg-element-hover);
    border-color: var(--border-hover);
}

.attachment-thumbnail {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    flex-shrink: 0;
}

.attachment-file-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 28px;
    flex-shrink: 0;
}

.attachment-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.attachment-filename {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.attachment-filename:hover {
    color: var(--primary);
    text-decoration: underline;
}

.attachment-size {
    font-size: 11px;
    color: var(--text-muted);
}

.attachment-delete-btn {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.attachment-delete-btn:hover {
    background: rgba(244, 63, 94, 0.1);
    border-color: var(--error);
    color: var(--error);
}

.attachment-upload-section {
    display: flex;
    justify-content: flex-start;
}

.upload-btn {
    background: var(--bg-element);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.upload-btn:hover {
    background: var(--bg-surface-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.card-attachment-icon {
    font-size: 12px;
    margin-top: 6px;
    color: var(--text-dim);
    display: inline-block;
}

/* Comments */
.comments-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 200px;
    overflow-y: auto;
    padding-inline-end: var(--space-xs);
}

.comment-item {
    background: var(--bg-root);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
    font-size: 13px;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    font-size: 11px;
}

.comment-author-info {
    display: flex;
    align-items: center;
    gap: 6px;
}

.comment-author-name {
    font-weight: 600;
    color: var(--text-main);
}

.comment-date {
    color: var(--text-dim);
    margin-left: auto;
    margin-right: 8px;
}

.comment-content {
    color: var(--text-main);
    line-height: 1.4;
    white-space: pre-wrap;
}

.comment-delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 0 4px;
    line-height: 1;
}

.comment-delete-btn:hover {
    color: var(--error);
}

.comment-input-area {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.comment-input {
    min-height: 60px;
    resize: vertical;
    font-family: inherit;
    font-size: 13px;
}

.user-avatar-tiny {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-tiny-placeholder {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-element-hover);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
}

.no-comments-msg {
    font-style: italic;
    color: var(--text-muted);
    font-size: 12px;
}

/* Edit Comment Mode */
.comment-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.comment-edit-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 0 4px;
    line-height: 1;
}

.comment-edit-btn:hover {
    color: var(--primary);
}

.comment-edit-area {
    margin-top: 8px;
}

.comment-edit-input {
    width: 100%;
    min-height: 60px;
    margin-bottom: 8px;
    border: 1px solid var(--primary);
    background: var(--bg-root);
    color: var(--text-main);
    padding: 8px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    resize: vertical;
}

.comment-edit-buttons {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}