:root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --accent-color: #8b5cf6;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --success: #10b981;
    --danger: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Dynamic Background Blobs */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    filter: blur(100px);
}

.blob {
    position: absolute;
    border-radius: 50%;
    animation: float 20s infinite alternate ease-in-out;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(59,130,246,0.4) 0%, rgba(15,23,42,0) 70%);
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(139,92,246,0.3) 0%, rgba(15,23,42,0) 70%);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 40%;
    width: 30vw;
    height: 30vw;
    background: radial-gradient(circle, rgba(16,185,129,0.2) 0%, rgba(15,23,42,0) 70%);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 15%) scale(1.1); }
}

/* Glassmorphism Utilities */
.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Typography & Utilities */
.text-center { text-align: center; }
.hidden { display: none !important; }

.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 100;
    border-top: none;
    border-left: none;
    border-right: none;
    border-radius: 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.logo i {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Buttons */
button, .btn-primary, .btn-primary-outline, .btn-secondary {
    cursor: pointer;
    font-family: inherit;
    border: none;
    outline: none;
    border-radius: 999px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1.5rem;
    font-weight: 500;
}

.btn-primary-outline:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 0.75rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(59, 130, 246, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 0.75rem 2rem;
    font-weight: 500;
    font-size: 1rem;
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-primary.large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero-section {
    padding: 12rem 2rem 6rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.pulse {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}

/* Search Container */
.search-container {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 0.5rem;
    border-radius: 999px;
    margin-bottom: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.search-container:focus-within {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px 0 rgba(59, 130, 246, 0.2);
    border-color: rgba(96, 165, 250, 0.5);
}

.search-icon {
    font-size: 1.5rem;
    color: var(--text-secondary);
    padding: 0 1rem;
}

.search-container input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: white;
    font-size: 1.1rem;
    font-family: inherit;
    padding: 1rem 0;
}

.search-container input::placeholder {
    color: var(--text-secondary);
}

/* Status Messages */
.status-message, .error-message {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.status-message {
    color: var(--primary-color);
}

.error-message {
    color: var(--danger);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Result Card */
.result-card {
    width: 100%;
    margin-top: 2rem;
    border-radius: 24px;
    padding: 2rem;
    text-align: left;
}

.result-layout {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.thumbnail-wrapper {
    position: relative;
    width: 240px;
    height: 135px;
    border-radius: 16px;
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

.thumbnail-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.thumbnail-wrapper:hover img {
    transform: scale(1.05);
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    backdrop-filter: blur(4px);
    pointer-events: none;
}

.result-details {
    flex: 1;
}

.video-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    color: var(--success);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

/* FAQ Section */
.margin-section {
    max-width: 1200px;
    margin: 0 auto 6rem;
    padding: 4rem;
    border-radius: 32px;
}

.faq-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.faq-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease, background 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
}

.faq-item i {
    font-size: 2rem;
    color: var(--accent-color);
}

.faq-text h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.faq-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--glass-border);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards cubic-bezier(0.2, 0.8, 0.2, 1);
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
    .search-container { flex-direction: column; border-radius: 24px; padding: 1rem; }
    .search-container input { width: 100%; text-align: center; padding: 1rem 0; }
    .search-container .btn-primary { width: 100%; }
    .result-layout { flex-direction: column; text-align: center; }
    .thumbnail-wrapper { width: 100%; height: auto; aspect-ratio: 16/9; }
    .action-buttons { flex-direction: column; }
    .faq-grid { grid-template-columns: 1fr; }
    .margin-section { padding: 2rem; margin: 0 1rem 4rem; }
}