/* Social Media Video Downloader - Main Stylesheet */
:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --accent: #f093fb;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-body: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(102, 126, 234, 0.15);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-family);
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.navbar-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
    transition: var(--transition);
}

.navbar-glass.scrolled { box-shadow: var(--shadow-md); }

.brand-icon {
    width: 38px; height: 38px;
    background: var(--gradient);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 1.1rem;
}

.site-logo {
    height: 44px;
    width: auto;
    max-width: min(240px, 100%);
    object-fit: contain;
    display: block;
}

.footer-logo {
    height: 42px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    display: block;
}

.brand-text {
    font-weight: 700; font-size: 1.15rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary) !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary) !important;
    background: rgba(102, 126, 234, 0.08);
}

.dropdown-menu-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-menu-glass .dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: var(--transition);
}

.dropdown-menu-glass .dropdown-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-ghost:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.hero-section {
    position: relative;
    padding: 5rem 0 3rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0;
    background: var(--gradient-hero);
    opacity: 0.05;
}

.hero-bg::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(102,126,234,0.3) 0%, transparent 70%);
    top: -200px; right: -100px;
    animation: float 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(118,75,162,0.2) 0%, transparent 70%);
    bottom: -100px; left: -100px;
    animation: float 6s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-title .gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.hero-stat .stat-number {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-stat .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
}

.downloader-section {
    margin-top: -2rem;
    position: relative;
    z-index: 10;
    padding-bottom: 2rem;
}

.downloader-box { max-width: 720px; margin: 0 auto; }

.glow-input {
    border: 2px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    font-size: 1rem;
    padding: 0.875rem 1rem;
    transition: var(--transition);
    background: transparent !important;
}

.glow-input:focus {
    border-color: var(--primary) !important;
    box-shadow: var(--shadow-glow) !important;
    outline: none;
}

.input-group-text {
    border: 2px solid var(--border-color);
    border-right: none !important;
    border-radius: var(--radius-md) 0 0 var(--radius-md) !important;
}

.platform-badge {
    position: absolute;
    top: -12px; left: 16px;
    background: var(--gradient);
    color: #fff;
    padding: 2px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 4px;
}

.btn-download {
    background: var(--gradient);
    border: none;
    border-radius: var(--radius-md);
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
    transition: var(--transition);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: #fff;
}

.btn-download.loading { pointer-events: none; opacity: 0.8; }

.btn-clear {
    position: absolute;
    right: 8px; top: 50%;
    transform: translateY(-50%);
    background: none; border: none;
    color: var(--text-muted);
    z-index: 5; padding: 4px 8px;
}

.loader-animation {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 2rem 0 0;
}

.loader-ring {
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--primary);
    animation: bounce 1.4s ease-in-out infinite both;
}

.loader-ring:nth-child(1) { animation-delay: -0.32s; }
.loader-ring:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

.loader-text { text-align: center; color: var(--text-secondary); font-weight: 500; }

.result-thumb { position: relative; flex-shrink: 0; width: 160px; }
.result-thumb img { width: 160px; height: 90px; object-fit: cover; }

.duration-badge {
    position: absolute;
    bottom: 6px; right: 6px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.result-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.platform-tag { background: var(--gradient); color: #fff; font-weight: 600; font-size: 0.75rem; }

.format-card {
    background: var(--bg-body);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
    transition: var(--transition);
}

.format-card:hover {
    border-color: var(--primary);
    background: rgba(102, 126, 234, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.format-card .quality-label { font-weight: 700; font-size: 1.1rem; color: var(--primary); }
.format-card .format-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.25rem; }
.format-card .format-download-btn { min-width: 110px; font-weight: 600; }

.platforms-section, .features-section, .steps-section, .faq-section, .testimonials-section { padding: 4rem 0; }

.section-title { font-size: 2rem; font-weight: 800; text-align: center; margin-bottom: 0.5rem; }

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem 1.25rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.platform-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
    color: inherit;
}

.platform-card .platform-icon-wrap {
    width: 56px; height: 56px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    transition: var(--transition);
}

.platform-card:hover .platform-icon-wrap { transform: scale(1.1); }
.platform-card h6 { font-weight: 700; margin-bottom: 0.25rem; }
.platform-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

.features-section { background: linear-gradient(180deg, transparent 0%, rgba(102,126,234,0.03) 100%); }

.feature-card { padding: 2rem; border-radius: var(--radius-lg); transition: var(--transition); height: 100%; }
.feature-card:hover { background: var(--bg-card); box-shadow: var(--shadow-md); }

.feature-icon {
    width: 52px; height: 52px;
    background: var(--gradient);
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 1.3rem;
    margin-bottom: 1.25rem;
}

.feature-card h5 { font-weight: 700; margin-bottom: 0.5rem; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; margin: 0; }

.step-card { text-align: center; padding: 1.5rem; }

.step-number {
    width: 48px; height: 48px;
    background: var(--gradient);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.2rem;
    margin: 0 auto 1rem;
}

.step-card h5 { font-weight: 700; margin-bottom: 0.5rem; }
.step-card p { color: var(--text-secondary); font-size: 0.9rem; }

.accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.accordion-button { font-weight: 600; background: transparent; color: var(--text-primary); box-shadow: none !important; }
.accordion-button:not(.collapsed) { background: rgba(102, 126, 234, 0.05); color: var(--primary); }
.accordion-body { color: var(--text-secondary); }

.testimonials-section { background: linear-gradient(180deg, rgba(102,126,234,0.03) 0%, transparent 100%); }

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 100%;
}

.testimonial-stars { color: #f59e0b; margin-bottom: 1rem; }
.testimonial-text { font-style: italic; color: var(--text-secondary); margin-bottom: 1.5rem; line-height: 1.7; }

.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }

.testimonial-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700;
}

.recent-section { padding: 3rem 0; }

.recent-item {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.recent-item:hover { background: rgba(102, 126, 234, 0.05); }

.recent-thumb { width: 48px; height: 48px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }

.site-footer {
    position: relative;
    background: var(--text-primary);
    color: #cbd5e1;
    margin-top: 4rem;
}

.site-footer .text-muted,
.site-footer .footer-text {
    color: #94a3b8 !important;
}

.site-footer p {
    color: #94a3b8;
}

.site-footer .footer-bottom {
    border-color: rgba(255, 255, 255, 0.12) !important;
}

.site-footer .footer-bottom p {
    color: #94a3b8 !important;
}

.footer-gradient {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient);
}

.footer-heading {
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; transition: var(--transition); }
.footer-links a:hover { color: #fff; }

.social-btn {
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    color: #cbd5e1;
    transition: var(--transition);
    text-decoration: none;
}

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

.page-header { padding: 4rem 0 2rem; text-align: center; position: relative; }
.page-header::before { content: ''; position: absolute; inset: 0; background: var(--gradient-hero); opacity: 0.04; }
.page-header h1 { font-weight: 800; font-size: 2.5rem; }
.page-header p { color: var(--text-secondary); max-width: 600px; margin: 0.5rem auto 0; }

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); color: inherit; }

.blog-card-img {
    height: 200px;
    background: var(--gradient);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.5);
    font-size: 3rem;
}

.blog-card-body { padding: 1.5rem; }
.blog-card-body h5 { font-weight: 700; margin-bottom: 0.5rem; }
.blog-card-body p { color: var(--text-secondary); font-size: 0.9rem; }

.text-gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-primary { background: var(--gradient); border: none; }
.btn-primary:hover { background: var(--gradient); filter: brightness(1.1); }
.btn-outline-primary { border-color: var(--primary); color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); }

.fade-in { animation: fadeIn 0.5s ease forwards; }

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

@media (max-width: 768px) {
    .hero-section { padding: 3rem 0 2rem; }
    .section-title { font-size: 1.5rem; }
    .page-header h1 { font-size: 1.75rem; }
}

@media (max-width: 576px) {
    .hero-stats { gap: 1rem; }
}