/* ===== Dashboard ===== */
.dashboard-welcome {
    margin-bottom: 28px;
}

.dashboard-welcome h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

.dashboard-welcome p {
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    display: flex;
    flex-direction: column;
}

.stat-card-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
}

.dashboard-section {
    margin-bottom: 28px;
}

.dashboard-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.dashboard-section-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

/* Course Grid */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

/* Activity Feed */
.activity-feed {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.activity-item {
    display: flex;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

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

.activity-item:hover {
    background: var(--bg-hover);
}

.activity-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.85rem;
}

.activity-icon.assignment { background: var(--primary-bg); color: var(--primary); }
.activity-icon.grade { background: var(--success-bg); color: var(--success); }
.activity-icon.announcement { background: var(--warning-bg); color: #856404; }
.activity-icon.exam { background: var(--danger-bg); color: var(--danger); }
.activity-icon.forum { background: var(--info-bg); color: var(--info); }

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

.activity-content h4 {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.activity-content p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Upcoming Deadlines */
.deadline-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.deadline-item:last-child {
    border-bottom: none;
}

.deadline-date {
    text-align: center;
    min-width: 48px;
}

.deadline-date .day {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}

.deadline-date .month {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

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

.deadline-info h4 {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.deadline-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.deadline-status {
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
}

/* Announcement Cards */
.announcement-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 12px;
    transition: all var(--transition);
}

.announcement-card:hover {
    box-shadow: var(--shadow-sm);
}

.announcement-card.pinned {
    border-left: 3px solid var(--warning);
}

.announcement-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.announcement-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.announcement-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    color: var(--text);
}

.quick-action-btn:hover {
    background: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    color: var(--text);
}

.quick-action-btn svg {
    color: var(--primary);
}

.quick-action-btn span {
    font-size: 0.85rem;
    font-weight: 500;
}

/* Course Detail Page */
.course-banner {
    height: 12px;
    border-radius: var(--radius) var(--radius) 0 0;
}

.course-detail-header {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}

.course-detail-header h1 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.course-detail-header .course-code {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.course-detail-meta {
    display: flex;
    gap: 24px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}