:root {
    --primary-color: #0ea5e9;
    --primary-gradient: linear-gradient(135deg, #0ea5e9, #3b82f6);
    --secondary-color: #f59e0b;
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --light-text: #64748b;
    --border-color: rgba(226, 232, 240, 0.8);
    --card-bg: rgba(255, 255, 255, 0.84);
    --header-bg: rgba(255, 255, 255, 0.92);
    --glass-blur: blur(12px);
    --font-family: 'Tajawal', sans-serif;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 15px 35px -5px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #1d4ed8, #3b82f6);
    --secondary-color: #fbbf24;
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --light-text: #94a3b8;
    --border-color: rgba(51, 65, 85, 0.6);
    --card-bg: rgba(30, 41, 59, 0.72);
    --header-bg: rgba(15, 23, 42, 0.86);
    --shadow-lg: 0 15px 35px -5px rgba(0, 0, 0, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { max-width: 100%; overflow-x: hidden; }

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    direction: rtl;
    transition: background-color 0.4s ease, color 0.4s ease;
}

img, svg { max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.header {
    background-color: var(--header-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    min-height: 80px;
}

.logo {
    font-size: 26px;
    font-weight: 900;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    font-weight: 700;
    color: var(--light-text);
    position: relative;
    padding-bottom: 5px;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--primary-color); }

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    right: 0;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
    border-radius: 5px;
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.header-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 15px;
    flex-wrap: wrap;
}

#header-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn {
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: none;
    font-family: inherit;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(148, 163, 184, 0.12);
    border: 1px solid var(--border-color);
    color: var(--light-text);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: 35px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.1);
}

.auth-shell {
    padding: 80px 0;
    background-color: var(--bg-color);
    min-height: calc(100vh - 180px);
}

.auth-container { max-width: 560px; }

.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 42px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.auth-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 28px;
    font-size: 34px;
    font-weight: 900;
}

.auth-form { display: flex; flex-direction: column; gap: 18px; }
.field-group { display: flex; flex-direction: column; gap: 8px; }
.field-label { font-weight: 700; color: var(--text-color); }

.field-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    font-family: inherit;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.92);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.field-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.12);
    transform: translateY(-1px);
}

.auth-submit { width: 100%; text-align: center; font-size: 18px; padding: 14px; }
.auth-google { border-color: #db4437; color: #db4437; }
.auth-separator { text-align: center; color: var(--light-text); font-size: 14px; margin: 4px 0; }
.auth-note { margin-top: 18px; color: var(--light-text); font-size: 14px; line-height: 1.8; text-align: center; }
.auth-footer { text-align: center; margin-top: 24px; color: var(--light-text); }
.auth-footer a { color: var(--primary-color); font-weight: 800; }

.status-alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    text-align: center;
    font-weight: 700;
}

.status-alert-error { background: #fee2e2; color: #b91c1c; }
.status-alert-success { background: #dcfce7; color: #166534; }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 20px 12px;
}

.modal {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 50px 40px;
    border-radius: 24px;
    width: 90%;
    max-width: 550px;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.modal p { color: var(--light-text); }

.grid-countries {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin: 24px 0;
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.country-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--border-color);
    padding: 20px 15px;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 700;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.country-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(14, 165, 233, 0.2);
}

.country-card.selected {
    background: var(--primary-gradient);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.hero {
    position: relative;
    padding: 100px 0;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    z-index: -1;
    animation: rotateBg 30s linear infinite;
}

@keyframes rotateBg {
    100% { transform: rotate(360deg); }
}

.hero h1 {
    font-size: 56px;
    font-weight: 900;
    margin-bottom: 25px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: slideUpFade 0.8s ease-out forwards;
}

.hero p {
    font-size: 22px;
    color: var(--light-text);
    max-width: 800px;
    margin: 0 auto 40px;
    animation: slideUpFade 1s ease-out forwards;
    opacity: 0;
}

.hero .btn-group {
    animation: slideUpFade 1.2s ease-out forwards;
    opacity: 0;
}

@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.ai-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border-radius: 20px;
    padding: 8px 16px;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.ai-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(16, 185, 129, 0.4);
}

.ai-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.admin-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 20px;
}

.admin-table th,
.admin-table td {
    padding: 15px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    background: rgba(0, 0, 0, 0.02);
    font-weight: 700;
    color: var(--primary-color);
}

.admin-table tr:hover td { background: rgba(14, 165, 233, 0.02); }

.dropdown { position: relative; }

.dropdown-menu {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: 16px;
    padding: 10px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: var(--glass-blur);
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li { display: block; width: 100%; }

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-color);
}

.dropdown-menu a::after { content: none !important; }

.dropdown-menu a:hover {
    background: rgba(14, 165, 233, 0.08);
    color: var(--primary-color);
    padding-right: 25px;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.02);
    transition: all 0.3s;
}

.mobile-menu-btn:hover { background: rgba(14, 165, 233, 0.1); }

.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 70px 0 30px;
    margin-top: 90px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background: rgba(14, 165, 233, 0.1);
    filter: blur(80px);
    z-index: 0;
}

.footer .container { position: relative; z-index: 1; }

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h3 {
    color: var(--primary-color);
    margin-bottom: 25px;
    font-weight: 900;
    font-size: 24px;
    position: relative;
    display: inline-block;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    width: 40%;
    height: 3px;
    bottom: -8px;
    right: 0;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.footer-col ul a {
    color: var(--light-text);
    transition: all 0.3s ease;
    display: inline-block;
    padding-bottom: 12px;
    font-weight: 600;
}

.footer-col ul a:hover {
    color: var(--primary-color);
    transform: translateX(-8px);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    color: var(--light-text);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.courses-shell {
    min-height: calc(100vh - 120px);
    padding: 36px 0 64px;
    background:
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.08), transparent 28%),
        radial-gradient(circle at bottom left, rgba(245, 158, 11, 0.08), transparent 24%),
        var(--bg-color);
    color: var(--text-color);
}

.courses-hero,
.course-detail-hero,
.course-tabs-shell,
.course-empty-dark {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.courses-hero,
.course-detail-hero {
    display: flex;
    justify-content: space-between;
    gap: 22px;
    align-items: center;
    flex-wrap: wrap;
    padding: 26px;
    margin-bottom: 26px;
}

.courses-hero-copy,
.course-detail-hero-copy {
    flex: 1;
    min-width: 280px;
}

.courses-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(14, 165, 233, 0.12);
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: 14px;
    font-size: 13px;
}

.courses-hero h1,
.course-detail-hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
    color: var(--text-color);
    margin-bottom: 10px;
}

.courses-hero p,
.course-detail-hero p {
    color: var(--light-text);
    font-size: 16px;
    line-height: 1.8;
    max-width: 700px;
}

.courses-hero-side,
.course-detail-side {
    min-width: 230px;
    max-width: 290px;
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 18px;
}

.courses-hero-side strong,
.course-detail-side strong {
    display: block;
    color: var(--primary-color);
    font-size: 20px;
    margin-bottom: 8px;
}

.courses-hero-side p,
.course-detail-side p {
    color: var(--text-color);
    font-size: 14px;
    margin: 0;
}

.course-showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.course-catalog-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    min-height: 330px;
    display: flex;
    flex-direction: column;
}

.course-free-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    padding: 6px 11px;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.16);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.24);
    font-weight: 800;
    z-index: 2;
    font-size: 12px;
}

.course-catalog-media {
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at top, rgba(14, 165, 233, 0.12), transparent 42%),
        linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(248,250,252,0.96) 100%);
    border-bottom: 1px solid var(--border-color);
}

.course-catalog-media svg {
    width: 62px;
    height: 62px;
    fill: var(--primary-color);
}

.course-catalog-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
}

.course-catalog-body h2 {
    font-size: 26px;
    color: var(--text-color);
    margin-bottom: 4px;
}

.course-catalog-subtitle {
    color: var(--light-text);
    font-size: 15px;
    margin: 0;
}

.course-catalog-summary {
    color: var(--light-text);
    line-height: 1.75;
    margin: 0;
    min-height: 68px;
    font-size: 14px;
}

.course-catalog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.course-catalog-meta span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(14, 165, 233, 0.09);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 700;
}

.course-details-btn,
.course-side-link,
.course-file-link,
.course-resource-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 16px;
    border-radius: 14px;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
    font-weight: 800;
    font-size: 14px;
    transition: all 0.25s ease;
}

.course-details-btn:hover,
.course-side-link:hover,
.course-file-link:hover,
.course-resource-action:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.course-details-btn {
    width: 100%;
    margin-top: auto;
}

.course-empty-dark {
    padding: 32px 24px;
    text-align: center;
}

.course-empty-dark h2,
.course-empty-inline {
    color: var(--text-color);
}

.course-empty-dark p,
.course-empty-inline {
    color: var(--light-text);
    line-height: 1.8;
}

.course-detail-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.course-detail-stat {
    min-width: 110px;
    padding: 12px 14px;
    border-radius: 16px;
    background: rgba(14, 165, 233, 0.06);
    border: 1px solid var(--border-color);
}

.course-detail-stat strong {
    display: block;
    color: var(--primary-color);
    font-size: 22px;
    margin-bottom: 2px;
}

.course-detail-stat span {
    color: var(--light-text);
    font-size: 13px;
}

.course-detail-access {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 14px;
    background: rgba(16, 185, 129, 0.16);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.24);
    font-weight: 900;
    margin-bottom: 14px;
    font-size: 13px;
}

.course-side-link {
    width: 100%;
}

.course-tabs-shell {
    padding: 22px;
}

.course-tab-nav {
    display: flex;
    gap: 18px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 18px;
    overflow-x: auto;
}

.course-tab-button {
    appearance: none;
    background: transparent;
    border: none;
    color: var(--light-text);
    font-family: inherit;
    font-size: 16px;
    font-weight: 800;
    padding: 0 0 14px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.course-tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.course-tab-panel {
    display: none;
}

.course-tab-panel.active {
    display: block;
}

.course-track-block + .course-track-block {
    margin-top: 22px;
}

.course-track-header {
    margin-bottom: 14px;
}

.course-track-header h2,
.course-lesson-title {
    color: var(--text-color);
}

.course-track-header h2 {
    font-size: 22px;
}

.course-lesson-block {
    padding: 14px 0;
    border-top: 1px solid var(--border-color);
}

.course-lesson-title {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 10px;
}

.course-resource-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
    padding: 14px 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--border-color);
}

.course-resource-row + .course-resource-row,
.course-resource-content + .course-resource-row {
    margin-top: 12px;
}

.course-resource-main {
    display: flex;
    gap: 14px;
    align-items: center;
    min-width: 220px;
    flex: 1;
}

.course-resource-bullet {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    background: var(--primary-color);
    box-shadow: 0 0 0 6px rgba(14, 165, 233, 0.12);
    flex: 0 0 auto;
}

.course-resource-main h3 {
    color: var(--text-color);
    font-size: 18px;
    margin-bottom: 3px;
}

.course-resource-main p {
    color: var(--light-text);
    margin: 0;
    font-size: 13px;
}

.course-resource-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.course-resource-content {
    display: none;
    margin-top: 10px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(14, 165, 233, 0.04);
    color: var(--text-color);
    line-height: 1.8;
    border: 1px solid var(--border-color);
    font-size: 14px;
}

.course-resource-content.active {
    display: block;
}

.course-empty-inline {
    padding: 22px 0;
}

.course-files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.course-file-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--border-color);
}

.course-file-type {
    align-self: flex-start;
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(14, 165, 233, 0.09);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 800;
}

.course-file-card h3 {
    color: var(--text-color);
    font-size: 18px;
    margin: 0;
}

.course-file-card p {
    color: var(--light-text);
    margin: 0;
    line-height: 1.8;
    font-size: 13px;
}

@media (max-width: 1100px) {
    .course-showcase-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .container { padding: 0 16px; }

    .header .container {
        flex-wrap: wrap;
        padding: 15px 0;
        min-height: auto;
        justify-content: space-between;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-links,
    .header-actions {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 15px;
        padding: 15px 0 0;
    }

    .nav-links.active,
    .header-actions.active {
        display: flex;
        animation: slideDown 0.3s ease-out forwards;
    }

    .header-actions.active {
        border-top: 1px dashed var(--border-color);
        padding-top: 20px;
        align-items: stretch;
    }

    .header-actions .btn,
    .header-actions .dropdown,
    .header-actions > a { width: 100%; text-align: center; }

    #header-flag {
        width: 100%;
        justify-content: center;
        margin-left: 0 !important;
    }

    .dropdown .dropdown-toggle::after {
        content: ' ▼';
        font-size: 10px;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-right: 2px solid var(--primary-color);
        border-radius: 0;
        padding-right: 15px;
        background: transparent;
        margin-top: 10px;
    }

    .dropdown-menu a:hover { padding-right: 15px; }
    .hero h1 { font-size: 38px; }
    .hero p { font-size: 18px; }
    .modal { width: 100%; padding: 30px 20px; border-radius: 20px; }
    .grid-countries { grid-template-columns: 1fr; }
    .auth-shell { padding: 48px 0; min-height: auto; }
    .auth-card { padding: 28px 20px; border-radius: 20px; }
    .auth-title { font-size: 28px; }
    .field-input { font-size: 16px; }
    .admin-table { display: block; overflow-x: auto; white-space: nowrap; }
    .footer-content { gap: 30px; text-align: center; }
    .footer-col h3::after { left: 0; right: 0; margin: 0 auto; }
    .courses-hero,
    .course-detail-hero,
    .course-tabs-shell,
    .course-empty-dark { border-radius: 24px; }
    .courses-hero,
    .course-detail-hero,
    .course-tabs-shell { padding: 18px 16px; }
    .course-catalog-card { min-height: auto; }
    .course-catalog-media { min-height: 130px; }
    .course-catalog-body h2 { font-size: 22px; }
    .course-resource-row { padding: 12px; }
    .course-resource-main h3 { font-size: 16px; }
    .course-files-grid,
    .course-showcase-grid { grid-template-columns: 1fr; }
}

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