/* Course Dashboard - Pure Tailwind Extensions */

/* Line clamp utilities */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Lesson content animation */
.lesson-content {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Lesson icon rotation */
.lesson-icon.rotated {
    transform: rotate(90deg);
}

/* Course card hover lift */
.course-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.course-card:hover {
    transform: translateY(-2px);
}

/* Notification item animation */
/* CSS - Only animate truly new items */
.notification-item {
    transition: all 0.2s ease;
}

.notification-item:hover {
    background-color: #f8fafc;
}

.notification-item.new {
    background-color: #eff6ff;
    /* border-left: 3px solid #6366f1; */
}

.notification-item.is-new {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Filter button active state */
.course-filter-btn.active {
    background-color: #4f46e5 !important;
    color: white !important;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

/* Progress bar animation */
.progress-bar {
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dropdown animations */
#course-notification-dropdown,
#course-sort-menu,
.user-menu {
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Sticky header shadow on scroll */
header.scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Loading spinner */
.animate-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Focus styles */
button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Print styles */
@media print {
    .course-dashboard {
        background: white;
    }
    
    header {
        position: static;
    }
}