/* CSS Custom Properties */
:root {
    --color-primary: #3498db;
    --color-primary-dark: #2980b9;
    --color-success: #27ae60;
    --color-warning: #f39c12;
    --color-danger: #e74c3c;
    --color-info: #17a2b8;

    --color-text: #333;
    --color-text-light: #666;
    --color-text-muted: #999;

    --color-bg: #f5f7fa;
    --color-bg-white: #fff;
    --color-border: #e1e5eb;

    --sidebar-width: 240px;
    --header-height: 60px;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);

    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

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

a:hover {
    text-decoration: underline;
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: #2c3e50;
    color: #ecf0f1;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: #bdc3c7;
    text-decoration: none;
    transition: all var(--transition);
}

.nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
    text-decoration: none;
}

.nav-item.active {
    background: var(--color-primary);
    color: #fff;
}

.nav-icon {
    margin-right: 0.75rem;
    font-size: 1rem;
}

.nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 0.5rem 1.5rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.85rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-header {
    height: var(--header-height);
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
}

.user-name-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.logout-form {
    margin: 0;
}

.content-wrapper {
    flex: 1;
    padding: 1.5rem;
    max-width: 1400px;
    width: 100%;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: var(--color-text-light);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.error-list {
    margin: 0;
    padding-left: 1.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: 0.5rem;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-success {
    background: var(--color-success);
    color: #fff;
}

.btn-warning {
    background: var(--color-warning);
    color: #fff;
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    background: var(--color-bg);
}

.btn-link {
    background: transparent;
    border: none;
    padding: 0.25rem;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
.form-page {
    max-width: 600px;
}

.form-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.form-group small {
    display: block;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    font-size: 0.8rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="datetime-local"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-white);
    transition: border-color var(--transition);
}

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

.form-group input[type="color"] {
    width: 50px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.form-inline {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-inline .form-group {
    margin-bottom: 0;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

/* Danger Zone */
.danger-zone {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #fef3f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
}

.danger-zone h3 {
    color: var(--color-danger);
    margin-bottom: 0.5rem;
}

.danger-zone p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.badge-primary {
    background: var(--color-primary);
    color: #fff;
}

.badge-secondary {
    background: #95a5a6;
    color: #fff;
}

.badge-success {
    background: var(--color-success);
    color: #fff;
}

.badge-warning {
    background: var(--color-warning);
    color: #fff;
}

.badge-danger {
    background: var(--color-danger);
    color: #fff;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-bg-white);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-primary);
}

.stat-label {
    color: var(--color-text-light);
    font-size: 0.85rem;
}

/* Dashboard Layout */
.dashboard-grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.dashboard-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dashboard-main {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.dashboard-tasks {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dashboard-activity {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
    align-self: start;
}

.activity-feed-scroll {
    max-height: 400px;
    overflow-y: auto;
}

.view-all-link {
    display: block;
    text-align: center;
    padding: 0.5rem;
    color: var(--color-primary);
    font-size: 0.8rem;
}

.stat-card-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.stat-card-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.stat-card-danger .stat-value {
    color: var(--color-danger);
}

/* Section titles with color accents */
.section-title-danger {
    border-left: 3px solid var(--color-danger);
    padding-left: 0.5rem;
}

.section-title-warning {
    border-left: 3px solid var(--color-warning);
    padding-left: 0.5rem;
}

.section-title-primary {
    border-left: 3px solid var(--color-primary);
    padding-left: 0.5rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header .section-title {
    margin-bottom: 0;
}

/* Compact task items */
.task-list.compact {
    gap: 0.25rem;
}

.task-item-compact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.85rem;
    transition: background var(--transition);
}

.task-item-compact:hover {
    background: var(--color-border);
    text-decoration: none;
}

.task-item-compact.task-overdue {
    background: #fef2f2;
    border-left: 2px solid var(--color-danger);
}

.task-item-compact .task-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-item-compact .task-due {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.project-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.project-dot-lg {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Compact activity feed */
.activity-feed.compact {
    gap: 0.5rem;
}

.activity-item-compact {
    font-size: 0.8rem;
    padding: 0.5rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    line-height: 1.4;
}

.activity-item-compact .activity-user {
    font-weight: 600;
    color: var(--color-text);
}

.activity-item-compact .activity-action {
    color: var(--color-text-light);
}

.activity-item-compact .activity-time {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* Compact project cards */
.project-card-compact {
    display: block;
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition);
}

.project-card-compact:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    text-decoration: none;
}

.project-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.project-card-info {
    flex: 1;
    min-width: 0;
}

.project-card-compact .project-name {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-stats-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.progress-bar.slim {
    height: 4px;
}

/* Compact project list for dashboard */
.project-list-compact {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.project-item-compact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.625rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.85rem;
    transition: background var(--transition);
}

.project-item-compact:hover {
    background: var(--color-border);
    text-decoration: none;
}

.project-name-compact {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.project-progress-mini {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Scrollable activity feed */
.activity-scroll {
    max-height: 280px;
    overflow-y: auto;
}

@media (max-width: 1100px) {
    .dashboard-grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .dashboard-grid-3col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .dashboard-main {
        grid-template-columns: 1fr;
    }

    .dashboard-activity {
        position: static;
    }

    .activity-feed-scroll {
        max-height: 300px;
    }
}

/* Dashboard Grid (legacy) */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.dashboard-section {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

/* Task List */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.task-list-page {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.task-list-page .task-item {
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
}

.task-list-page .task-item:last-child {
    border-bottom: none;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition);
}

.task-item:hover {
    background: var(--color-bg);
    text-decoration: none;
}

.task-overdue {
    border-left: 3px solid var(--color-danger);
}

.task-checkbox {
    flex-shrink: 0;
}

.status-dot {
    display: block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
}

.status-dot.status-todo { border-color: #95a5a6; }
.status-dot.status-in_progress { border-color: var(--color-primary); background: var(--color-primary); }
.status-dot.status-review { border-color: var(--color-warning); background: var(--color-warning); }
.status-dot.status-done { border-color: var(--color-success); background: var(--color-success); }

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

.task-title {
    display: block;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-light);
    flex-wrap: wrap;
}

.task-badges {
    display: flex;
    gap: 0.5rem;
}

.project-tag, .milestone-tag {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-size: 0.7rem;
    border-radius: var(--radius-sm);
}

.milestone-tag {
    background: #eee;
    color: #666;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.project-card, .project-card-full {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition);
}

.project-card:hover, .project-card-full:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.project-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.project-color {
    width: 8px;
    height: 40px;
    border-radius: 4px;
    flex-shrink: 0;
}

.project-color-large {
    width: 8px;
    height: 100%;
    min-height: 80px;
    border-radius: 4px;
}

.project-name {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.project-description {
    color: var(--color-text-light);
    font-size: 0.85rem;
    margin: 0.25rem 0 0;
}

.project-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.project-stats .stat {
    text-align: center;
}

.project-stats .stat-value {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--color-text);
}

.project-stats .stat-label {
    font-size: 0.75rem;
}

.project-progress {
    margin: 0.75rem 0;
}

.progress-bar {
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar.large {
    height: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width var(--transition);
}

.progress-text {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.project-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

/* Project Detail */
.project-detail {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.project-overview {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.overview-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.overview-info {
    flex: 1;
}

.project-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.progress-section {
    margin-top: 1.5rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.project-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
}

.content-main {
    min-width: 0;
}

.content-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.content-sidebar .section {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

/* Milestones */
.milestones-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.milestone-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.milestone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.milestone-name {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.milestone-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.milestone-description {
    color: var(--color-text-light);
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.milestone-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.milestone-progress .progress-bar {
    flex: 1;
    max-width: 200px;
}

/* Team List */
.team-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.team-member, .member-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.member-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.member-avatar.small {
    width: 28px;
    height: 28px;
    font-size: 0.7rem;
}

.member-avatar.large {
    width: 48px;
    height: 48px;
    font-size: 1rem;
}

.member-info {
    flex: 1;
    min-width: 0;
}

.member-name {
    display: block;
    font-weight: 500;
}

.member-email, .member-role {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.member-card {
    background: var(--color-bg-white);
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.members-list {
    display: grid;
    gap: 1rem;
}

.add-member-form {
    background: var(--color-bg-white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

/* Activity Feed */
.activity-feed {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.activity-feed.small {
    font-size: 0.85rem;
}

.activity-item {
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.activity-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.activity-content {
    color: var(--color-text);
}

.activity-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* Kanban Board */
.kanban-board {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.kanban-column {
    flex: 0 0 280px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 1rem;
    min-height: 400px;
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-border);
}

.column-title {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.column-count {
    background: var(--color-border);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.column-tasks {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 100px;
}

.kanban-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    cursor: grab;
    transition: all var(--transition);
}

.kanban-card:hover {
    box-shadow: var(--shadow-md);
}

.kanban-card.sortable-ghost {
    opacity: 0.5;
}

.card-link {
    display: block;
    padding: 1rem;
    color: var(--color-text);
    text-decoration: none;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0;
}

.card-due {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
}

.card-due.overdue {
    color: var(--color-danger);
}

/* Task Detail */
.task-detail {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
}

.task-main {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.task-header {
    margin-bottom: 1.5rem;
}

.task-header .task-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.task-meta-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.task-description {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.task-meta {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.task-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.task-sidebar .section {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.assignees-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.assignee-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-bg);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
}

/* Attachments */
.upload-form {
    margin-bottom: 1rem;
}

.upload-area {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.upload-area input[type="file"] {
    flex: 1;
}

.attachments-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.attachment-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
}

.attachment-link {
    flex: 1;
    display: flex;
    justify-content: space-between;
    color: var(--color-text);
}

.attachment-name {
    font-weight: 500;
}

.attachment-size {
    color: var(--color-text-light);
    font-size: 0.8rem;
}

/* Comments */
.comment-form {
    margin-bottom: 1.5rem;
}

.comment-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    margin-bottom: 0.75rem;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comment-item {
    padding: 1rem;
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.comment-author {
    font-weight: 500;
}

.comment-time {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.comment-content {
    color: var(--color-text);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    background: var(--color-bg);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--color-text-light);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table .actions {
    display: flex;
    gap: 0.5rem;
}

/* Admin */
.admin-dashboard {
    max-width: 1000px;
}

.admin-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.admin-card {
    background: var(--color-bg-white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-text);
    transition: all var(--transition);
}

.admin-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.admin-card h3 {
    margin: 0 0 0.5rem;
    color: var(--color-primary);
}

.admin-card p {
    margin: 0;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Reports */
.report-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.report-card {
    background: var(--color-bg-white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.report-card h3 {
    margin: 0 0 0.5rem;
}

.report-card p {
    color: var(--color-text-light);
    margin: 0 0 1rem;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 3rem;
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-state h3 {
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.empty-message {
    color: var(--color-text-muted);
    font-style: italic;
}

/* Auth Pages */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-card {
    background: var(--color-bg-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--color-text-light);
    margin: 0;
}

.auth-form .form-group {
    margin-bottom: 1rem;
}

.auth-links {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
    font-size: 0.875rem;
}

/* Utilities */
.text-danger { color: var(--color-danger) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-muted { color: var(--color-text-muted) !important; }

.inline { display: inline; }

code {
    background: var(--color-bg);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
}

/* Dependencies */
.dependency-group {
    margin-bottom: 1.25rem;
}

.dependency-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.dependency-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dependency-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-border);
}

.dependency-item.dependency-done {
    border-left-color: var(--color-success);
}

.dependency-item.dependency-pending {
    border-left-color: var(--color-warning);
}

.dependency-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    text-decoration: none;
    color: var(--color-text);
}

.dependency-link:hover {
    text-decoration: none;
}

.dependency-link:hover .dependency-title {
    color: var(--color-primary);
}

.dependency-status-icon {
    font-size: 0.9rem;
    width: 20px;
    text-align: center;
}

.dependency-done .dependency-status-icon {
    color: var(--color-success);
}

.dependency-pending .dependency-status-icon {
    color: var(--color-warning);
}

.dependency-title {
    flex: 1;
    font-weight: 500;
}

.add-dependency-form {
    margin-top: 1rem;
}

.add-dependency-form .form-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.add-dependency-form select {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.add-dependency-form .btn {
    flex-shrink: 0;
}

/* Blocked indicator on task lists */
.task-blocked {
    background: #fff9e6;
}

.blocked-badge {
    background: var(--color-warning);
    color: #fff;
    padding: 0.125rem 0.375rem;
    font-size: 0.65rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

/* Dependencies overview page */
.dependency-overview {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.dependency-overview h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.dependency-chain {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.dependency-chain-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-border);
}

.dependency-chain-item.blocked {
    border-left-color: var(--color-warning);
    background: #fffbeb;
}

.dependency-chain-item.ready {
    border-left-color: var(--color-success);
}

.dependency-chain-item.done {
    border-left-color: var(--color-success);
    opacity: 0.7;
}

.chain-task-info {
    flex: 1;
}

.chain-task-title {
    font-weight: 500;
    display: block;
}

.chain-task-meta {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.chain-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Calendar */
.calendar-container {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.calendar-project-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.calendar-project-header h2 {
    margin: 0;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.calendar-title {
    margin: 0;
    font-size: 1.5rem;
}

.calendar-grid {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.weekday {
    padding: 0.75rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--color-text-light);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-day {
    min-height: 100px;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem;
    background: var(--color-bg-white);
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day.other-month {
    background: var(--color-bg);
}

.calendar-day.other-month .day-number {
    color: var(--color-text-muted);
}

.calendar-day.today {
    background: #eff6ff;
}

.calendar-day.weekend {
    background: #fafafa;
}

.calendar-day.weekend.today {
    background: #eff6ff;
}

.calendar-day.has-milestone {
    background: #fef3c7;
}

.day-number {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.day-number.today-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
}

.day-tasks {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.calendar-task {
    display: block;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary);
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background var(--transition);
}

.calendar-task:hover {
    background: var(--color-border);
    text-decoration: none;
}

.calendar-task.status-todo {
    background: #f3f4f6;
}

.calendar-task.status-in_progress {
    background: #dbeafe;
}

.calendar-task.status-review {
    background: #fef3c7;
}

.calendar-task.status-done {
    background: #d1fae5;
    opacity: 0.7;
}

.calendar-milestone {
    display: block;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    background: #fbbf24;
    color: #78350f;
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.more-tasks {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    padding: 0.125rem 0.5rem;
}

.calendar-legend {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-light);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
}

.legend-color.status-todo {
    background: #f3f4f6;
    border: 1px solid #d1d5db;
}

.legend-color.status-in_progress {
    background: #dbeafe;
    border: 1px solid #93c5fd;
}

.legend-color.status-review {
    background: #fef3c7;
    border: 1px solid #fcd34d;
}

.legend-color.status-done {
    background: #d1fae5;
    border: 1px solid #6ee7b7;
}

.legend-color.legend-milestone {
    background: #fbbf24;
}

@media (max-width: 900px) {
    .calendar-day {
        min-height: 80px;
        padding: 0.25rem;
    }

    .calendar-task {
        font-size: 0.65rem;
        padding: 0.2rem 0.3rem;
    }

    .weekday {
        font-size: 0.7rem;
        padding: 0.5rem 0.25rem;
    }
}

@media (max-width: 600px) {
    .calendar-day {
        min-height: 60px;
    }

    .day-number {
        font-size: 0.8rem;
    }

    .calendar-task {
        display: none;
    }

    .day-tasks {
        display: none;
    }

    .calendar-day.has-tasks::after {
        content: '';
        display: block;
        width: 6px;
        height: 6px;
        background: var(--color-primary);
        border-radius: 50%;
        margin: 0.25rem auto;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

    .main-content {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .project-content {
        grid-template-columns: 1fr;
    }

    .task-detail {
        grid-template-columns: 1fr;
    }

    .kanban-column {
        flex: 0 0 260px;
    }

    .header-actions {
        flex-wrap: wrap;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}