/* ===== CSS Variables & Reset ===== */
:root {
    /* Colors - Light Mode */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --success-color: #10b981;
    --success-bg: #d1fae5;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition-normal), color var(--transition-normal);
}

/* ===== Progress Bar ===== */
.progress-bar-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
}

.progress-bar-track {
    flex: 1;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.progress-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-primary);
    min-width: 45px;
    text-align: right;
}

/* ===== Header ===== */
.header {
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-top: 40px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-actions-left {
    display: flex;
    gap: var(--spacing-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-outline:hover {
    background: var(--accent-primary);
    color: white;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
}

.btn-icon:hover {
    background: var(--accent-primary);
    color: white;
}

/* Theme Toggle Icons - Force visibility with !important */
.sun-icon,
.moon-icon {
    transition: opacity var(--transition-fast);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Default (light mode): show moon, hide sun */
.sun-icon {
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

.moon-icon {
    opacity: 1;
    z-index: 2;
}

/* Dark mode: show sun, hide moon */
[data-theme="dark"] .sun-icon {
    opacity: 1 !important;
    pointer-events: auto;
    z-index: 2;
}

[data-theme="dark"] .moon-icon {
    opacity: 0 !important;
    pointer-events: none;
    z-index: 1;
}

/* Make btn-icon position relative for absolute children */
#themeToggle {
    position: relative;
    overflow: hidden;
}

/* ===== Modals ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-xl);
    transform: translateY(-20px);
    transition: transform var(--transition-fast);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}

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

.search-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    border-color: var(--accent-primary);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.filter-option:hover {
    background: var(--bg-tertiary);
}

/* ===== Main Content ===== */
.main-content {
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: calc(100vh - 200px);
    width: 100%;
}

/* ===== Upload Section ===== */
.upload-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    width: 100%;
    margin: 0 auto;
}

.upload-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
}

.upload-icon {
    margin-bottom: var(--spacing-lg);
    color: var(--accent-primary);
}

.upload-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.upload-card>p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-zone span {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.csv-format {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    text-align: left;
}

.csv-format h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.csv-format code {
    display: block;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.875rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.csv-format p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.csv-example-wrapper {
    position: relative;
    margin-top: var(--spacing-sm);
}

.csv-example {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    padding-right: 50px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    overflow-x: auto;
    white-space: pre;
    font-family: 'Monaco', 'Consolas', monospace;
    margin: 0;
}

.btn-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.btn-copy:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-copy.copied {
    background: #22c55e;
    border-color: #22c55e;
}

/* ===== Roadmap Section ===== */
.roadmap-section {
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.roadmap-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: sticky;
    top: 10px;
    background: var(--bg-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.roadmap-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.category-header:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.category-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Clean Vertical Timeline Layout */
.roadmap-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

/* Timeline line on left - YELLOW */
.roadmap-container::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, #FFD93D, #F0B90B);
    border-radius: 2px;
}

/* Category cards */
.category {
    position: relative;
    margin-left: 60px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* Timeline dot - YELLOW */
.category::before {
    content: '';
    position: absolute;
    left: -42px;
    top: 24px;
    width: 16px;
    height: 16px;
    background: #FFD93D;
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 217, 61, 0.5);
    z-index: 1;
}

/* Connector line from dot to card - YELLOW */
.category::after {
    content: '';
    position: absolute;
    left: -26px;
    top: 30px;
    width: 26px;
    height: 3px;
    background: #F0B90B;
}

/* Category header */
.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.category-header:hover {
    background: var(--bg-secondary);
}

/* Tasks container */
.tasks-container {
    overflow: hidden;
    max-height: 0;
    transition: max-height var(--transition-slow) ease-out;
}

.category.expanded .tasks-container {
    max-height: 5000px;
}

/* Task list - simple grid */
.task-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    list-style: none;
}

/* Task items */
.task-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.task-item:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.task-item.completed {
    opacity: 0.6;
}

.task-item.completed .task-name {
    text-decoration: line-through;
    color: var(--text-muted);
}

.category-title {
    flex: 1;
    font-weight: 600;
    font-size: 1.125rem;
}

.category-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.category.completed .category-badge {
    background: var(--success-bg);
    color: var(--success-color);
}

.category-chevron {
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.category.expanded .category-chevron {
    transform: rotate(180deg);
}

/* ===== Tasks ===== */
.tasks-container {
    overflow: hidden;
    max-height: 0;
    transition: max-height var(--transition-slow) ease-out;
}

.category.expanded .tasks-container {
    max-height: 5000px;
}

.task-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    list-style: none;
}

.task-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    font-size: 0.875rem;
    min-height: 44px;
}

.task-item:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.task-item.completed {
    background: var(--bg-tertiary);
    opacity: 0.7;
}

.task-item.completed .task-name {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-item.hidden {
    display: none;
}

/* Custom Checkbox */
.task-checkbox {
    position: relative;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.task-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.task-checkbox .checkmark {
    position: absolute;
    top: 0;
    left: 0;
    width: 18px;
    height: 18px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.task-checkbox input:checked~.checkmark {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
}

.task-checkbox .checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform var(--transition-fast);
}

.task-checkbox input:checked~.checkmark::after {
    transform: rotate(45deg) scale(1);
}

.task-content {
    flex: 1;
    min-width: 0;
}

.task-name {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.task-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .upload-card {
        padding: var(--spacing-lg);
    }

    .roadmap-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .category-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .category-title {
        font-size: 1rem;
    }

    .task-item {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .header-actions {
        flex-wrap: wrap;
        justify-content: center;
    }

    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .roadmap-container {
        padding-left: var(--spacing-lg);
    }

    .roadmap-container::before {
        left: 6px;
        width: 2px;
    }

    .category-header::before {
        left: calc(-1 * var(--spacing-lg) + 2px);
        width: 10px;
        height: 10px;
    }
}

/* ===== Animations ===== */
@keyframes checkPop {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1);
    }
}

.task-checkbox input:checked~.checkmark {
    animation: checkPop 0.3s ease;
}

/* ===== Copilot Button ===== */
.btn-copilot {
    background: linear-gradient(135deg, #0078d4 0%, #00a4ef 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.btn-copilot:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-copilot.active {
    background: linear-gradient(135deg, #005a9e 0%, #0078d4 100%);
}

/* ===== Copilot Sidebar ===== */
.copilot-sidebar {
    position: fixed;
    top: 40px;
    right: 0;
    width: 380px;
    height: calc(100vh - 40px);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    z-index: 999;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.copilot-sidebar.open {
    transform: translateX(0);
}

.copilot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, #0078d4 0%, #00a4ef 100%);
    color: white;
}

.copilot-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.125rem;
}

.copilot-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.copilot-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.copilot-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

/* Empty State */
.copilot-empty {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.copilot-empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.copilot-empty h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.copilot-empty p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Topic Details */
.copilot-topic {
    animation: fadeIn var(--transition-normal);
}

.topic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.topic-category {
    background: var(--accent-gradient);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.topic-status {
    font-size: 0.75rem;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.topic-status.completed {
    background: var(--success-bg);
    color: var(--success-color);
}

.topic-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.topic-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-primary);
}

/* Copilot Actions */
.copilot-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.btn-copilot-action {
    background: linear-gradient(135deg, #0078d4 0%, #00a4ef 100%);
    color: white;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.btn-copilot-action:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-copilot-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Custom Question */
.custom-question {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    animation: fadeIn var(--transition-normal);
}

.question-input {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    resize: vertical;
    margin-bottom: var(--spacing-sm);
    outline: none;
    transition: border-color var(--transition-fast);
}

.question-input:focus {
    border-color: var(--accent-primary);
}

.btn-ask {
    width: 100%;
    justify-content: center;
}

/* Copilot Footer */
.copilot-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.copilot-footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Task item selected state */
.task-item.selected {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Main content adjustment when sidebar is open */
.main-content.sidebar-open {
    margin-right: 380px;
    transition: margin-right var(--transition-normal);
}

/* ===== Responsive for Copilot ===== */
@media (max-width: 1024px) {
    .copilot-sidebar {
        width: 320px;
    }

    .main-content.sidebar-open {
        margin-right: 0;
    }
}

@media (max-width: 768px) {
    .copilot-sidebar {
        width: 100%;
        max-width: 400px;
    }

    .btn-copilot span {
        display: none;
    }

    .btn-copilot {
        width: 40px;
        height: 40px;
        padding: 0;
        justify-content: center;
    }
}

/* ===== Copilot Notification Toast ===== */
.copilot-notification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, #0078d4 0%, #00a4ef 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 500;
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.copilot-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

/* ===== Auth Modal & User Menu ===== */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-modal {
    max-width: 400px;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-tab:hover {
    color: var(--text-primary);
}

.auth-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.auth-error {
    padding: var(--spacing-sm) var(--spacing-md);
    background: #fee2e2;
    color: #dc2626;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

[data-theme="dark"] .auth-error {
    background: rgba(220, 38, 38, 0.2);
    color: #fca5a5;
}

.auth-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: var(--spacing-md);
}

/* Sync button animation */
.btn-sync.syncing svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ===== Projects Dashboard ===== */
.projects-section {
    padding: var(--spacing-2xl);
    max-width: 1200px;
    margin: 0 auto;
}

.projects-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.projects-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.projects-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.project-card-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: var(--spacing-md);
}

.project-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.project-card-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.project-card-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.project-card-progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.project-card-progress-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: right;
}

.project-card-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

/* Create New Card */
.project-card-new {
    border: 2px dashed var(--border-color);
    background: transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    text-align: center;
}

.project-card-new:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.project-card-new .project-card-icon {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.project-card-new:hover .project-card-icon {
    background: var(--accent-gradient);
    color: white;
}

/* Updated Roadmap Header */
.roadmap-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.roadmap-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.roadmap-header-left h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.roadmap-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Danger button */
.btn-danger {
    color: #dc2626;
    border-color: #dc2626;
}

.btn-danger:hover {
    background: #dc2626;
    color: white;
}

@media (max-width: 768px) {
    .projects-section {
        padding: var(--spacing-lg);
    }

    .projects-header h2 {
        font-size: 1.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* CSV Tooltip on Create Project Card */
.project-card-new {
    position: relative;
}

.csv-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 100;
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
}

.csv-tooltip pre {
    margin: 0;
    font-size: 0.7rem;
    font-family: 'Monaco', 'Consolas', monospace;
    color: var(--text-secondary);
}

.project-card-new:hover .csv-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}