/* ============================================
   Courses Page Styles
   ============================================ */

/* --- Page Header --- */
.courses-page-header {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg) var(--space-xl);
}

.courses-header-content h1 {
    font-size: var(--text-3xl);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.courses-header-content p {
    color: var(--text-secondary);
    font-size: var(--text-lg);
    max-width: 500px;
    margin: 0 auto;
}

/* --- Courses Grid --- */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-xl);
    padding: 0 var(--space-md) var(--space-2xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Course Card --- */
.course-card-item {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: default;
    display: flex;
    flex-direction: column;
}

.course-card-item:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

/* Card image / gradient header */
.course-card-visual {
    position: relative;
    height: 160px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.course-card-item:hover .course-card-visual img {
    transform: scale(1.05);
}

.course-card-gradient {
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-card-gradient-icon {
    font-size: 3.5rem;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* Card body */
.course-card-body {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.course-card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.course-card-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Meta info (sections, students count) */
.course-card-meta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-top: var(--space-xs);
}

.course-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-weight: 500;
}

.course-meta-item .meta-icon {
    font-size: var(--text-sm);
}

/* Card footer with action */
.course-card-footer {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* --- Enrollment Status Badges --- */
.enrollment-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.enrollment-badge--approved {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.enrollment-badge--pending {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.enrollment-badge--rejected {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.enrollment-badge--none {
    background: var(--info-bg);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Enroll button */
.btn-enroll {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--accent-gradient);
    color: var(--accent-contrast);
    box-shadow: 0 2px 8px var(--accent-glow);
}

.btn-enroll:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px var(--accent-glow-hover);
}

.btn-enroll:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-enter-course {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    border: 1px solid var(--success);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--success-bg);
    color: var(--success);
}

.btn-enter-course:hover {
    background: var(--success);
    color: var(--white);
    transform: translateY(-1px);
}

/* --- Empty state for courses --- */
.courses-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
}

.courses-empty-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
}

.courses-empty-text {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.courses-empty-hint {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        padding: 0 var(--space-sm) var(--space-xl);
    }

    .courses-header-content h1 {
        font-size: var(--text-2xl);
    }

    .course-card-visual {
        height: 130px;
    }
}

@media (max-width: 480px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .course-card-body {
        padding: var(--space-md);
    }
}