/* ================================================
   Search Education — Theme System (Dark + Light)
   ================================================ */

/* ── Theme Variables ── */
:root,
[data-theme="dark"] {
    --bg-body: #000000;
    --bg-primary: rgba(255,255,255,0.04);
    --bg-card: rgba(255,255,255,0.05);
    --bg-card-hover: rgba(255,255,255,0.08);
    --bg-elevated: rgba(23,23,23,0.95);
    --bg-input: rgba(255,255,255,0.05);
    --bg-input-focus: rgba(255,255,255,0.08);
    --bg-overlay: rgba(0,0,0,0.7);
    --border-default: rgba(255,255,255,0.08);
    --border-subtle: rgba(255,255,255,0.06);
    --border-strong: rgba(255,255,255,0.15);
    --text-primary: #ffffff;
    --text-secondary: rgba(255,255,255,0.7);
    --text-tertiary: rgba(255,255,255,0.45);
    --text-muted: rgba(255,255,255,0.25);
    --accent: #38bdf8;
    --accent-hover: #7dd3fc;
    --accent-bg: rgba(56,189,248,0.1);
    --accent-border: rgba(56,189,248,0.2);
    --accent-glow: rgba(56,189,248,0.04);
    --success: #34d399;
    --success-bg: rgba(16,185,129,0.15);
    --warning: #fbbf24;
    --warning-bg: rgba(251,191,36,0.15);
    --error: #f87171;
    --error-bg: rgba(239,68,68,0.15);
    --shadow-card: 0 25px 50px -12px rgba(0,0,0,0.5);
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.3);
    --nav-bg: rgba(0,0,0,0.6);
    --gradient-hero: linear-gradient(135deg, rgba(56,189,248,0.08) 0%, rgba(139,92,246,0.05) 50%, transparent 100%);
    --code-bg: rgba(255,255,255,0.06);
}

[data-theme="light"] {
    --bg-body: #f8fafc;
    --bg-primary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-elevated: rgba(255,255,255,0.98);
    --bg-input: #f1f5f9;
    --bg-input-focus: #e2e8f0;
    --bg-overlay: rgba(0,0,0,0.4);
    --border-default: #e2e8f0;
    --border-subtle: #f1f5f9;
    --border-strong: #cbd5e1;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-muted: #cbd5e1;
    --accent: #0284c7;
    --accent-hover: #0369a1;
    --accent-bg: rgba(2,132,199,0.08);
    --accent-border: rgba(2,132,199,0.2);
    --accent-glow: rgba(2,132,199,0.04);
    --success: #059669;
    --success-bg: rgba(5,150,105,0.08);
    --warning: #d97706;
    --warning-bg: rgba(217,119,6,0.08);
    --error: #dc2626;
    --error-bg: rgba(220,38,38,0.08);
    --shadow-card: 0 25px 50px -12px rgba(0,0,0,0.08);
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
    --nav-bg: rgba(255,255,255,0.8);
    --gradient-hero: linear-gradient(135deg, rgba(2,132,199,0.06) 0%, rgba(124,58,237,0.04) 50%, transparent 100%);
    --code-bg: #f1f5f9;
}

/* ── Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    overflow-x: hidden;
    transition: background 0.4s ease, color 0.4s ease;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ── Selection ── */
::selection {
    background: var(--accent);
    color: #fff;
}

/* ── Links ── */
a { color: inherit; text-decoration: none; }

/* ── Animations ── */
@keyframes fadeSlideIn {
    0% { opacity: 0; transform: translateY(30px); filter: blur(8px); }
    100% { opacity: 1; transform: translateY(0); filter: blur(0); }
}
@keyframes portraitFall {
    0% { opacity: 0; transform: translateY(-200px) scale(0.5) rotate(-10deg); filter: blur(4px); }
    60% { opacity: 1; transform: translateY(8px) scale(1.05) rotate(2deg); }
    80% { transform: translateY(-4px) scale(0.98) rotate(-1deg); }
    100% { opacity: 1; transform: translateY(0) scale(1) rotate(0deg); }
}
@keyframes beam-slide-1 {
    0% { transform: translateY(-50%) translateX(-50%) rotate(45deg); }
    100% { transform: translateY(-50%) translateX(-50%) rotate(45deg) translateY(50%); }
}
@keyframes beam-slide-2 {
    0% { transform: translateY(-50%) translateX(-50%) rotate(-30deg); }
    100% { transform: translateY(-50%) translateX(-50%) rotate(-30deg) translateY(50%); }
}
@keyframes pulse-glow {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}
@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.anim-fade-in { animation: fadeSlideIn 0.6s ease-in-out both; }
.anim-d1 { animation: fadeSlideIn 0.6s ease-in-out 0.1s both; }
.anim-d2 { animation: fadeSlideIn 0.6s ease-in-out 0.2s both; }
.anim-d3 { animation: fadeSlideIn 0.6s ease-in-out 0.3s both; }
.anim-d4 { animation: fadeSlideIn 0.6s ease-in-out 0.4s both; }
.anim-d5 { animation: fadeSlideIn 0.6s ease-in-out 0.5s both; }
.anim-portrait { animation: portraitFall 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 0.8s both; }

/* ── Scroll Reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    filter: blur(8px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, filter 0.8s ease-out;
}
.reveal.visible { opacity: 1; transform: translateY(0); filter: blur(0); }

/* ── Nav ── */
.nav-glass {
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    transition: background 0.4s, border-color 0.4s;
}
.nav-link {
    color: var(--text-tertiary);
    transition: color 0.3s, transform 0.3s;
    font-size: 14px;
    font-weight: 400;
}
.nav-link:hover { color: var(--text-primary); transform: translateY(-1px); }

/* ── Hero Beams ── */
.hero-beam {
    position: absolute; width: 1px; height: 200%; pointer-events: none;
}
.hero-beam-1 {
    background: linear-gradient(90deg, transparent 0%, var(--accent-glow) 45%, var(--accent-bg) 50%, var(--accent-glow) 55%, transparent 100%);
    width: 300px; top: 50%; left: 20%;
    animation: beam-slide-1 15s linear infinite;
}
.hero-beam-2 {
    background: linear-gradient(90deg, transparent 0%, rgba(139,92,246,0.04) 45%, rgba(139,92,246,0.15) 50%, rgba(139,92,246,0.04) 55%, transparent 100%);
    width: 200px; top: 50%; right: 10%;
    animation: beam-slide-2 20s linear infinite;
}
.hero-glow {
    position: absolute; border-radius: 50%; filter: blur(100px); pointer-events: none;
}

/* ── Form Card ── */
.form-card {
    background: var(--bg-elevated);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-card), inset 0 1px 0 var(--border-subtle);
    transition: background 0.4s, border-color 0.4s;
}
.form-input {
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    font-family: inherit; font-size: 14px;
    padding: 12px 16px; border-radius: 12px;
    outline: none; width: 100%;
    transition: border-color 0.3s, box-shadow 0.3s, background 0.4s;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
    border-color: var(--accent-border);
    box-shadow: 0 0 0 3px var(--accent-bg);
    background: var(--bg-input-focus);
}
.form-input option { background: #171717; color: #fff; }
.form-label {
    font-size: 12px; font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 6px; display: block;
    text-transform: uppercase; letter-spacing: 0.05em;
}

/* ── Buttons ── */
.btn-primary {
    background: var(--text-primary);
    color: var(--bg-body);
    font-weight: 600; font-size: 14px;
    padding: 14px 28px; border-radius: 9999px;
    border: none; cursor: pointer;
    display: inline-flex; align-items: center; gap: 8px;
    transition: all 0.3s;
    box-shadow: 0 10px 15px -3px rgba(115,115,115,0.1);
    text-decoration: none; font-family: inherit;
}
[data-theme="dark"] .btn-primary { background: #fff; color: #171717; }
[data-theme="light"] .btn-primary { background: #0f172a; color: #fff; box-shadow: 0 10px 15px -3px rgba(15,23,42,0.15); }
.btn-primary:hover { transform: translateY(-2px) scale(1.03); }

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-weight: 500; font-size: 14px;
    padding: 14px 28px; border-radius: 9999px;
    border: 1px solid var(--border-strong);
    cursor: pointer;
    display: inline-flex; align-items: center; gap: 8px;
    transition: all 0.3s;
    text-decoration: none; font-family: inherit;
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--text-muted); transform: translateY(-2px); }

/* ── Stat Card ── */
.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 16px; padding: 28px 20px;
    text-align: center; transition: all 0.3s;
}
.stat-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); }

/* ── Service Card ── */
.service-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 16px; padding: 32px 28px;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative; overflow: hidden;
}
.service-card::before {
    content: ""; position: absolute; inset: 0;
    border-radius: inherit; padding: 1px;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    background: linear-gradient(225deg, transparent 0%, var(--border-strong) 50%, transparent 100%);
    opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.service-card:hover::before { opacity: 1; }
.service-card:hover { background: var(--bg-card-hover); transform: translateY(-6px); box-shadow: var(--shadow-card); }

.service-icon-wrap {
    width: 48px; height: 48px; border-radius: 12px;
    background: var(--accent-bg);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px; color: var(--accent);
    transition: all 0.3s;
}
.service-card:hover .service-icon-wrap { background: var(--accent-border); transform: scale(1.1); }

/* ── Destination Card ── */
.dest-card {
    position: relative; border-radius: 20px; overflow: hidden;
    height: 200px; cursor: pointer; text-decoration: none; display: block;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.dest-card:hover { transform: translateY(-6px) scale(1.02); box-shadow: var(--shadow-card); }
.dest-card-bg { position: absolute; inset: 0; transition: transform 0.6s; }
.dest-card:hover .dest-card-bg { transform: scale(1.08); }
.dest-card-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);
}
.dest-card-content { position: absolute; bottom: 0; left: 0; right: 0; padding: 24px; z-index: 2; }
.dest-arrow {
    position: absolute; top: 16px; right: 16px;
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(255,255,255,0.15); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transform: translateX(-8px); transition: all 0.4s;
    z-index: 2; color: #fff;
}
.dest-card:hover .dest-arrow { opacity: 1; transform: translateX(0); }

/* ── University Slider ── */
.uni-slider-track {
    display: flex; gap: 16px;
    animation: marquee 40s linear infinite;
    width: max-content;
}
.uni-slider-track:hover { animation-play-state: paused; }
.uni-logo-card {
    flex-shrink: 0; width: 220px; height: 80px;
    background: var(--bg-primary); border: 1px solid var(--border-subtle);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    padding: 16px; transition: all 0.3s;
}
.uni-logo-card:hover { background: var(--bg-card-hover); border-color: var(--border-default); }
.uni-logo-placeholder {
    font-size: 12px; font-weight: 500;
    color: var(--text-tertiary); text-align: center; line-height: 1.3;
}

/* ── Testimonial Card ── */
.testimonial-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 20px; padding: 32px;
    transition: all 0.4s;
    position: relative;
}
.testimonial-card::before {
    content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
    background: linear-gradient(225deg, transparent 0%, var(--border-strong) 50%, transparent 100%);
    opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.testimonial-card:hover::before { opacity: 1; }
.testimonial-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); }

/* ── Blog Card ── */
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px; overflow: hidden;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    text-decoration: none; color: var(--text-primary); display: block;
}
.blog-card:hover { background: var(--bg-card-hover); transform: translateY(-6px); box-shadow: var(--shadow-card); }
.blog-card-img {
    height: 200px;
    background: var(--gradient-hero);
    position: relative; overflow: hidden;
}
.blog-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.blog-card:hover .blog-card-img img { transform: scale(1.05); }
.blog-category {
    position: absolute; top: 12px; left: 12px;
    background: var(--bg-elevated); backdrop-filter: blur(8px);
    padding: 4px 12px; border-radius: 9999px;
    font-size: 11px; font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 0.05em;
    border: 1px solid var(--border-subtle);
}

/* ── CTA Section ── */
.cta-section { position: relative; overflow: hidden; }
.cta-section::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

/* ── Section Label ── */
.section-label {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 500; color: var(--accent);
    text-transform: uppercase; letter-spacing: 0.1em;
    margin-bottom: 16px; padding: 6px 14px; border-radius: 9999px;
    background: var(--accent-bg); border: 1px solid var(--accent-border);
}

/* ── Separator ── */
.section-sep {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-default), transparent);
}

/* ── Trust Avatars ── */
.trust-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    border: 2px solid var(--bg-body);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 600; color: #fff;
}

/* ── Theme Toggle ── */
.theme-toggle {
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--bg-primary); border: 1px solid var(--border-subtle);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: all 0.3s; color: var(--text-secondary);
    position: relative; overflow: hidden;
}
.theme-toggle:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.theme-toggle .icon-sun, .theme-toggle .icon-moon {
    position: absolute; transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
[data-theme="dark"] .theme-toggle .icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="dark"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.5); }
[data-theme="light"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.5); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }

/* ── Mobile Menu ── */
.mobile-menu {
    position: fixed; inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(24px);
    z-index: 100;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 24px;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
    color: var(--text-secondary); text-decoration: none;
    font-size: 24px; font-weight: 500; transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--text-primary); }

/* ── Toast ── */
.toast {
    position: fixed; bottom: 32px; right: 32px;
    background: var(--bg-elevated); backdrop-filter: blur(24px);
    border: 1px solid var(--border-default);
    border-radius: 16px; padding: 16px 24px;
    display: flex; align-items: center; gap: 12px; z-index: 9999;
    transform: translateY(120%); opacity: 0;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: var(--shadow-card); max-width: 400px;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── University Detail Page ── */
.info-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.info-item {
    background: var(--bg-primary); border: 1px solid var(--border-subtle);
    border-radius: 12px; padding: 16px; transition: all 0.3s;
}
.info-item:hover { background: var(--bg-card-hover); }

/* ── Country Detail ── */
.benefit-card {
    background: var(--bg-primary); border: 1px solid var(--border-subtle);
    border-radius: 12px; padding: 20px;
    display: flex; align-items: flex-start; gap: 14px;
    transition: all 0.3s;
}
.benefit-card:hover { background: var(--bg-card-hover); transform: translateY(-2px); }

/* ── Course Card ── */
.course-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: 16px; padding: 24px;
    transition: all 0.3s;
}
.course-card:hover { background: var(--bg-card-hover); border-color: var(--border-default); transform: translateY(-3px); box-shadow: var(--shadow-sm); }

/* ── Page Header ── */
.page-header {
    padding: 140px 0 60px; position: relative; overflow: hidden;
    background: var(--gradient-hero);
}
.page-header::after {
    content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-default), transparent);
}

/* ── Blog Content ── */
.blog-content { line-height: 1.8; }
.blog-content h2 { font-size: 1.5rem; font-weight: 600; margin: 2rem 0 1rem; color: var(--text-primary); }
.blog-content h3 { font-size: 1.25rem; font-weight: 600; margin: 1.5rem 0 0.75rem; color: var(--text-primary); }
.blog-content p { margin-bottom: 1.25rem; color: var(--text-secondary); }
.blog-content ul, .blog-content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; color: var(--text-secondary); }
.blog-content li { margin-bottom: 0.5rem; }
.blog-content strong { color: var(--text-primary); font-weight: 600; }
.blog-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.blog-content a:hover { color: var(--accent-hover); }
.blog-content blockquote {
    border-left: 3px solid var(--accent); padding: 1rem 1.5rem;
    background: var(--accent-bg); border-radius: 0 12px 12px 0;
    margin: 1.5rem 0; color: var(--text-secondary); font-style: italic;
}
.blog-content code {
    background: var(--code-bg); padding: 2px 8px; border-radius: 6px;
    font-size: 0.9em; color: var(--accent);
}

/* ── Footer ── */
.footer-link {
    color: var(--text-tertiary); font-size: 14px;
    transition: color 0.3s;
}
.footer-link:hover { color: var(--text-primary); }

/* ── Contact Form Map Area ── */
.contact-info-card {
    background: var(--bg-card); border: 1px solid var(--border-subtle);
    border-radius: 16px; padding: 24px;
    display: flex; align-items: flex-start; gap: 16px;
    transition: all 0.3s;
}
.contact-info-card:hover { background: var(--bg-card-hover); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .page-header { padding: 120px 0 40px; }
}