/**
 * Index Page Styles - Glassmorphism
 * Ders listesi ve ders içerik görünümü stilleri
 */

/*
 * Ana içerik sarmalayıcı — kaydırma burada DEĞİL, doğal document (body/html) üzerinde.
 * İç scroll (100dvh + overflow:auto) mobilde çift kaydırma / içeriğin “bölünmesi” yapıyordu.
 */
.main-scroll-wrapper {
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: visible;
}

/* İçerik alanı – yükseklik içeriğe göre; scroll wrapper’da */
.main-container {
    min-height: min-content;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.main-container-wide {
    max-width: 1200px;
    margin: 0 auto;
}

.view-title-spaced {
    margin-top: var(--space-lg);
}

.course-accent-text {
    color: var(--course-accent, var(--accent-primary));
}

.weeks-empty-state {
    opacity: 0.5;
    font-size: 1.5rem;
    text-align: center;
    margin-top: 4rem;
}

.week-add-actions {
    text-align: center;
    margin-top: 2rem;
}

.week-add-button {
    background: rgba(255, 255, 255, 0.05);
    border: 1px dashed var(--bg-darker);
    color: var(--text-primary);
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.week-admin-btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
}

.week-admin-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
}

.week-admin-btn-danger:hover {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.35);
}

.section-content-host {
    margin-top: 2rem;
}

.section-content-host.is-hidden {
    display: none;
}

.section-content-host.is-visible {
    display: block;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -44px;
    z-index: 10000;
    background: var(--accent-primary);
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 16px;
}

/* Ders Listesi Görünümü */
.courses-view {
    padding: var(--spacing-2xl) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.courses-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.courses-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-purple-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.courses-header h1 i {
    margin-right: var(--spacing-sm);
}

.courses-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.courses-notice {
    margin: var(--spacing-lg) auto 0;
    max-width: 1000px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.95rem;
}

.courses-notice a {
    color: var(--accent-cyan);
}

.courses-grid {
    display: grid;
    /* Create a responsive bento-like grid base */
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.course-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s ease, border-color 0.4s ease, background 0.4s ease;
    border: 1px solid var(--glass-border);
    position: relative;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow-purple);
    border-color: rgba(255, 255, 255, 0.2);
    background: var(--glass-bg-hover);
}

.course-card-header {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.course-card-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: coursePulse 6s ease-in-out infinite alternate;
}

@keyframes coursePulse {
    0% {
        transform: scale(1) translate(0, 0);
        opacity: 0.2;
    }

    100% {
        transform: scale(1.2) translate(-5%, -5%);
        opacity: 0.5;
    }
}

.course-icon {
    font-size: 64px;
    color: white;
    z-index: 1;
    position: relative;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.course-card:hover .course-icon {
    transform: scale(1.15) rotate(-5deg);
}

.course-card-body {
    padding: var(--spacing-xl);
}

.course-code {
    display: inline-block;
    background: var(--accent-purple-glow);
    color: var(--accent-purple);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.course-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.course-exam-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

.course-exam-date i {
    color: var(--danger);
}

.course-exam-date .exam-date-text {
    font-weight: 600;
    color: var(--accent-cyan);
}

.course-updates {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.course-updates i {
    color: var(--warning);
    font-size: 1rem;
    margin-top: 2px;
}

.course-update-text {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 600;
}

.course-update-subtext {
    display: block;
    color: var(--text-muted);
}

/* Ders İçerik Görünümü */
.course-content-view {
    padding: var(--spacing-xl) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
}

.course-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.back-to-courses {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 600;
}

.back-to-courses:hover {
    background: var(--glass-bg-hover);
    border-color: var(--accent-purple);
    transform: translateX(-5px);
}

.course-title-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-purple-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-sections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.course-section-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.course-section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transition: left 0.5s;
}

.course-section-card:hover::before {
    left: 100%;
}

.course-section-card:hover {
    transform: translateY(-5px);
    border-color: var(--glass-border);
    box-shadow: var(--shadow-glow-purple);
    background: var(--glass-bg-hover);
}

.course-section-card i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-purple-cyan);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-section-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.section-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-purple-cyan);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

/* Section Loading */
#section-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-darker);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

#section-loading i {
    font-size: 48px;
    color: var(--primary);
}

#section-loading p {
    margin-top: 20px;
    color: var(--text-secondary);
}

/* İskelet yükleme (index-main.js) — üstteki flex-ortalamayı ez */
#section-loading.section-content-skeleton-wrap {
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--spacing-lg, 1.25rem);
    background: linear-gradient(180deg, var(--bg-surface, #0a0a0c) 0%, rgba(10, 10, 12, 0.97) 100%);
    border-radius: var(--radius-lg, 16px);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

#section-loading.section-content-skeleton-wrap > i {
    font-size: 1rem;
    color: var(--accent-primary, #a78bfa);
}

/* Responsive */
@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

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

    .courses-header h1 {
        font-size: 1.75rem;
    }

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

    .course-content-view {
        padding: var(--spacing-lg);
    }

    .course-title-header h1 {
        font-size: 1.25rem;
    }

    .course-sections-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .course-nav {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .courses-view {
        padding: var(--spacing-md);
    }

    .courses-header h1 {
        font-size: 1.5rem;
    }

    .course-card-header {
        height: 140px;
    }

    .course-icon {
        font-size: 48px;
    }

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

    .course-title {
        font-size: 1.2rem;
    }

    .course-sections-grid {
        grid-template-columns: 1fr;
    }

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 1rem;
}

.empty-state a {
    color: var(--accent-purple);
    text-decoration: underline;
}

/* Subtitle */
.courses-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
    font-weight: 500;
}

/* Course Week Count */
.course-week-count {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--accent-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
}

.course-week-count.empty {
    color: var(--text-muted);
    font-weight: 400;
}

.course-week-count i {
    font-size: 0.85rem;
}

/* Course Code Badge (in content header) */
.course-code-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    color: white;
    margin-right: var(--spacing-sm);
    vertical-align: middle;
    -webkit-text-fill-color: white;
}

/* ════════════════════════════════════
   HAFTA KARTI STİLLERİ
   ════════════════════════════════════ */

.weeks-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.week-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.week-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transition: left 0.5s;
}

.week-card:hover::before {
    left: 100%;
}

.week-card:hover {
    transform: translateX(8px);
    border-color: var(--accent-purple);
    box-shadow: var(--shadow-glow-purple);
    background: var(--glass-bg-hover);
}

.week-card-number {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.week-card-number span {
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
    line-height: 1;
}

.week-card-body {
    flex: 1;
    min-width: 0;
}

.week-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.week-status {
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.week-status.has-content {
    color: var(--success, #10b981);
}

.week-status.no-content {
    color: var(--text-muted);
}

.week-card-arrow {
    color: var(--text-muted);
    font-size: 1rem;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.week-card:hover .week-card-arrow {
    transform: translateX(4px);
    color: var(--accent-purple);
}

/* Week card: has content variant */
.week-card.has-content {
    border-left: 3px solid var(--accent-purple);
}

.week-card.no-content {
    opacity: 0.65;
}

.week-card.no-content:hover {
    opacity: 1;
}

/* Responsive - Weeks */
@media (max-width: 768px) {
    .weeks-grid {
        gap: var(--spacing-sm);
    }

    .week-card {
        padding: var(--spacing-md) var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .week-card-number {
        width: 44px;
        height: 44px;
        min-width: 44px;
    }

    .week-card-number span {
        font-size: 1.2rem;
    }

    .week-card-body h3 {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .week-card {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .week-card-number {
        width: 38px;
        height: 38px;
        min-width: 38px;
    }

    .week-card-number span {
        font-size: 1rem;
    }
}

/* ========== Paylaş (Kısa Link) Butonları ========== */
.btn-share-link {
    transition: opacity 0.2s, color 0.2s;
}
.btn-share-link:hover {
    opacity: 1 !important;
    color: var(--accent-purple, #8b5cf6) !important;
}

.course-card .btn-share-link {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.9);
}
.course-card .btn-share-link:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.course-section-card {
    position: relative;
}
.btn-share-section {
    position: absolute;
    inset: 10px 10px auto auto;
    z-index: 5;
    width: 22px;
    height: 22px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    opacity: 0.5;
    box-sizing: border-box;
}
.btn-share-section i {
    font-size: 0.65rem !important;
    -webkit-text-fill-color: currentColor !important;
    background: none !important;
}
.btn-share-section:hover {
    opacity: 1;
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}