/* Social Video Downloader Pro - World-Class Professional Styling */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --svd-primary: #6366f1;
    --svd-primary-hover: #4f46e5;
    --svd-accent: #a855f7;
    --svd-success: #10b981;
    --svd-success-hover: #059669;
    --svd-bg-dark: #0f172a;
    --svd-card-glass: rgba(15, 23, 42, 0.85);
    --svd-border-glass: rgba(255, 255, 255, 0.12);
    --svd-text-main: #f8fafc;
    --svd-text-sub: #94a3b8;
    --svd-radius-lg: 24px;
    --svd-radius-md: 14px;
    --svd-radius-sm: 8px;
    --svd-shadow-main: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.svd-theme-light {
    --svd-card-glass: rgba(255, 255, 255, 0.92);
    --svd-border-glass: rgba(0, 0, 0, 0.08);
    --svd-text-main: #0f172a;
    --svd-text-sub: #64748b;
    --svd-shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.12);
}

.svd-app-wrapper {
    width: 100%;
    max-width: 920px;
    margin: 40px auto;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--svd-text-main);
    box-sizing: border-box;
    position: relative;
}

.svd-app-wrapper * {
    box-sizing: border-box;
}

/* Glowing Backdrops */
.svd-glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

.svd-glow-1 {
    width: 300px;
    height: 300px;
    background: var(--svd-primary);
    top: -50px;
    left: -50px;
}

.svd-glow-2 {
    width: 320px;
    height: 320px;
    background: var(--svd-accent);
    bottom: -50px;
    right: -50px;
}

/* Main Hero Card */
.svd-hero-card {
    position: relative;
    z-index: 1;
    background: var(--svd-card-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--svd-border-glass);
    border-radius: var(--svd-radius-lg);
    padding: 44px 36px;
    box-shadow: var(--svd-shadow-main);
    overflow: hidden;
}

/* Hero Header */
.svd-hero-header {
    text-align: center;
    margin-bottom: 32px;
}

.svd-pro-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.svd-pulse-dot {
    width: 8px;
    height: 8px;
    background: #6366f1;
    border-radius: 50%;
    box-shadow: 0 0 10px #6366f1;
    animation: svd-pulse 1.8s infinite;
}

@keyframes svd-pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(99, 102, 241, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.svd-hero-title {
    font-size: 2.3rem;
    font-weight: 900;
    margin: 0 0 10px 0;
    letter-spacing: -0.03em;
    line-height: 1.15;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.svd-theme-light .svd-hero-title {
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.svd-hero-subtitle {
    font-size: 1.05rem;
    color: var(--svd-text-sub);
    margin: 0 auto;
    max-width: 620px;
    line-height: 1.5;
}

/* Platforms Selection Bar */
.svd-platforms-bar {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.svd-platform-tab {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--svd-border-glass);
    color: var(--svd-text-sub);
    padding: 10px 18px;
    border-radius: 40px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.svd-svg-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.2s ease;
}

.svd-platform-tab:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--svd-text-main);
    transform: translateY(-2px);
}

.svd-platform-tab.active {
    background: linear-gradient(135deg, var(--svd-primary), var(--svd-accent));
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 8px 20px -4px rgba(99, 102, 241, 0.5);
}

.svd-platform-tab.active .svd-svg-icon {
    fill: #ffffff !important;
}

/* Input Search Box */
.svd-input-box-container {
    margin-bottom: 24px;
}

.svd-input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.6);
    border: 2px solid var(--svd-border-glass);
    border-radius: var(--svd-radius-md);
    padding: 8px 8px 8px 18px;
    transition: all 0.3s ease;
    gap: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.svd-theme-light .svd-input-wrapper {
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.svd-input-wrapper:focus-within {
    border-color: var(--svd-primary);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.35);
}

.svd-input-prefix-icon {
    color: var(--svd-text-sub);
    display: flex;
    align-items: center;
}

.svd-main-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--svd-text-main);
    font-size: 1.05rem;
    font-weight: 500;
    padding: 10px 0;
}

.svd-main-input::placeholder {
    color: var(--svd-text-sub);
    opacity: 0.65;
}

.svd-btn-paste {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--svd-border-glass);
    color: var(--svd-text-main);
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.svd-btn-paste:hover {
    background: rgba(255, 255, 255, 0.16);
}

.svd-btn-submit {
    background: linear-gradient(135deg, var(--svd-primary) 0%, var(--svd-primary-hover) 100%);
    color: #ffffff;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.svd-btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.6);
}

/* Spinner Loaders */
.svd-spinner-loader, .svd-spinner-small {
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: svd-spin 0.65s linear infinite;
}

.svd-spinner-small {
    border-top-color: var(--svd-primary);
}

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

/* Animated Progress Bar */
.svd-progress-container {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--svd-border-glass);
    border-radius: var(--svd-radius-md);
    padding: 20px;
    margin-bottom: 24px;
}

.svd-progress-bar-wrapper {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 12px;
}

.svd-progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--svd-primary), var(--svd-accent));
    border-radius: 10px;
    transition: width 0.3s ease;
}

.svd-progress-status-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--svd-text-sub);
}

/* Alert Error Box */
.svd-alert-error {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 16px 20px;
    border-radius: var(--svd-radius-md);
    margin-bottom: 24px;
}

.svd-alert-icon {
    font-size: 1.4rem;
}

.svd-alert-content strong {
    display: block;
    color: #f87171;
    font-size: 0.98rem;
    margin-bottom: 2px;
}

.svd-alert-content p {
    margin: 0;
    color: #fca5a5;
    font-size: 0.88rem;
}

/* Result Section */
.svd-result-wrapper {
    margin-top: 28px;
    animation: svd-slide-up 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes svd-slide-up {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.svd-result-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--svd-border-glass);
    border-radius: var(--svd-radius-md);
    padding: 24px;
}

.svd-theme-light .svd-result-grid {
    background: #ffffff;
}

/* Preview Column */
.svd-thumbnail-wrapper img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--svd-radius-sm);
    border: 1px solid var(--svd-border-glass);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.svd-media-meta-pills {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.svd-pill {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 6px;
    text-transform: uppercase;
}

.svd-pill-platform {
    background: var(--svd-primary);
    color: #ffffff;
}

.svd-pill-author {
    background: rgba(255, 255, 255, 0.1);
    color: var(--svd-text-sub);
}

.svd-pill-time {
    background: rgba(255, 255, 255, 0.08);
    color: var(--svd-text-sub);
}

/* Details Column */
.svd-video-title {
    font-size: 1.25rem;
    font-weight: 800;
    margin: 0 0 18px 0;
    line-height: 1.35;
    color: var(--svd-text-main);
}

/* Format Selector Tabs */
.svd-format-selector-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--svd-border-glass);
    padding-bottom: 10px;
}

.svd-fmt-tab {
    background: transparent;
    border: none;
    color: var(--svd-text-sub);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.svd-fmt-tab:hover {
    color: var(--svd-text-main);
    background: rgba(255, 255, 255, 0.05);
}

.svd-fmt-tab.active {
    color: #ffffff;
    background: var(--svd-primary);
}

/* Download Options List */
.svd-download-options-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.svd-option-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--svd-border-glass);
    padding: 12px 18px;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.svd-option-row:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(99, 102, 241, 0.4);
}

.svd-opt-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.svd-opt-label {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--svd-text-main);
}

.svd-opt-badge {
    font-size: 0.75rem;
    font-weight: 800;
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    padding: 3px 8px;
    border-radius: 6px;
}

.svd-opt-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.svd-btn-download-direct {
    background: linear-gradient(135deg, var(--svd-success), var(--svd-success-hover));
    color: #ffffff;
    padding: 8px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
    transition: all 0.2s ease;
}

.svd-btn-download-direct:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(16, 185, 129, 0.5);
    color: #ffffff;
}

.svd-btn-copy-stream {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--svd-border-glass);
    color: var(--svd-text-main);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.svd-btn-copy-stream:hover {
    background: rgba(255, 255, 255, 0.18);
}

/* Features Grid */
.svd-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 32px;
}

.svd-feature-card {
    background: var(--svd-card-glass);
    border: 1px solid var(--svd-border-glass);
    border-radius: var(--svd-radius-md);
    padding: 22px 18px;
    text-align: center;
    backdrop-filter: blur(12px);
}

.svd-feature-icon {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.svd-feature-card h4 {
    font-size: 1rem;
    font-weight: 800;
    margin: 0 0 6px 0;
    color: var(--svd-text-main);
}

.svd-feature-card p {
    font-size: 0.85rem;
    color: var(--svd-text-sub);
    margin: 0;
    line-height: 1.4;
}

/* Ad Banners */
.svd-ad-banner {
    margin: 20px 0;
    text-align: center;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
    .svd-hero-card {
        padding: 28px 20px;
    }
    .svd-result-grid {
        grid-template-columns: 1fr;
    }
    .svd-features-grid {
        grid-template-columns: 1fr;
    }
    .svd-input-wrapper {
        flex-wrap: wrap;
    }
    .svd-btn-submit {
        width: 100%;
        margin-top: 6px;
    }
}