/* ═══════════════════════════════════════════════════════════════
   GeffoVid — style.css
   Dark glassmorphism design system
   PHP 8.2+ project, no frameworks
   ═══════════════════════════════════════════════════════════════ */

/* ── CSS Variables ──────────────────────────────────────────── */
:root {
    --bg:            #0a0b0f;
    --bg-2:          #0f1117;
    --bg-3:          #141720;
    --text:          #f0f2f8;
    --text-secondary:#a0a8c0;
    --muted:         #6b7394;
    --glass:         rgba(255, 255, 255, 0.05);
    --glass-strong:  rgba(255, 255, 255, 0.09);
    --border:        rgba(255, 255, 255, 0.10);
    --border-strong: rgba(255, 255, 255, 0.18);
    --accent:        #7c6cfc;
    --accent-2:      #a78bfa;
    --accent-glow:   rgba(124, 108, 252, 0.35);
    --shadow:        0 8px 40px rgba(0, 0, 0, 0.55);
    --shadow-sm:     0 2px 16px rgba(0, 0, 0, 0.40);
    --radius:        16px;
    --radius-sm:     10px;
    --radius-xs:     6px;
    --transition:    0.25s ease;

    /* Floating header safe zone (prevents viewport overflow) */
    --header-float-x: 40px;
    --header-float-y: 20px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    /* Subtle radial glow in the background */
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(124, 108, 252, 0.15), transparent),
        radial-gradient(ellipse 50% 40% at 80% 80%, rgba(167, 139, 250, 0.08), transparent);
}

a {
    color: var(--accent-2);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
}

a:hover {
    color: var(--text);
    opacity: 0.85;
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: var(--radius-xs);
}

img, svg {
    display: block;
    max-width: 100%;
}

/* ── Floating Glass Header ──────────────────────────────────── */
.site-header {
    position: fixed;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    width: min(680px, calc(100vw - 32px));

    /* Glass effect */
    background: rgba(15, 17, 26, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-strong);
    border-radius: 100px; /* pill shape */
    box-shadow:
        var(--shadow-sm),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);

    /* Float animation */
    animation: floatHeader 50s ease-in-out infinite;
    will-change: transform;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    gap: 16px;
}

.header-logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text);
    background: linear-gradient(135deg, #fff 0%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
    flex-shrink: 0;
}

.header-tg {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    padding: 5px 12px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--glass);
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.header-tg:hover {
    color: var(--text);
    background: var(--glass-strong);
    border-color: var(--border-strong);
    opacity: 1;
}

.tg-icon {
    width: 15px;
    height: 15px;
    fill: currentColor;
    flex-shrink: 0;
}

/* ── Floating animation keyframes ────────────────────────────── */
/*
  The header starts centered.
  It gently drifts within a safe zone — never exits viewport.
  Duration: 50s, infinite, ease-in-out between waypoints.
  GPU-accelerated via translate3d.
  The X-axis shift is capped to ~40px each side.
  The Y-axis shift is capped to ~20px.
*/
@keyframes floatHeader {
    0%   { transform: translateX(-50%) translate3d(0px,    0px,  0); }
    12%  { transform: translateX(-50%) translate3d(28px,   8px,  0); }
    25%  { transform: translateX(-50%) translate3d(36px,  14px,  0); }
    37%  { transform: translateX(-50%) translate3d(18px,  18px,  0); }
    50%  { transform: translateX(-50%) translate3d(0px,   16px,  0); }
    62%  { transform: translateX(-50%) translate3d(-22px, 10px,  0); }
    75%  { transform: translateX(-50%) translate3d(-36px,  4px,  0); }
    87%  { transform: translateX(-50%) translate3d(-18px,  0px,  0); }
    100% { transform: translateX(-50%) translate3d(0px,    0px,  0); }
}

/* ── Reduced motion override ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .site-header {
        animation: none !important;
        transform: translateX(-50%) !important;
    }

    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── Main layout ─────────────────────────────────────────────── */
.site-main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Hero section ────────────────────────────────────────────── */
.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 24px 80px;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #c4b5fd 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto 48px;
    line-height: 1.7;
}

/* ── URL Form ────────────────────────────────────────────────── */
.url-form {
    width: 100%;
    max-width: 600px;
    margin: 0 auto 56px;
}

.url-form-inner {
    display: flex;
    gap: 10px;
    background: var(--glass);
    border: 1px solid var(--border-strong);
    border-radius: 100px;
    padding: 6px 6px 6px 20px;
    box-shadow: var(--shadow-sm), 0 0 0 0 var(--accent-glow);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.url-form-inner:focus-within {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm), 0 0 0 3px var(--accent-glow);
}

.url-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 0.95rem;
    color: var(--text);
    padding: 8px 4px;
    min-width: 0;
}

.url-input::placeholder {
    color: var(--muted);
}

.url-input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px var(--bg-3) inset;
    -webkit-text-fill-color: var(--text);
}

.url-submit {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    border: none;
    border-radius: 100px;
    padding: 10px 24px;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 16px rgba(124, 108, 252, 0.4);
    white-space: nowrap;
}

.url-submit:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(124, 108, 252, 0.55);
}

.url-submit:active {
    transform: translateY(0);
}

.url-submit:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 3px;
}

/* Form error message */
.form-error {
    margin-top: 10px;
    font-size: 0.85rem;
    color: #f87171;
    text-align: center;
    min-height: 1.2em;
    display: none;
}

.form-error.visible {
    display: block;
}

/* ── How it works (examples) ─────────────────────────────────── */
.how-it-works {
    width: 100%;
    max-width: 680px;
    margin: 0 auto 80px;
}

.how-title {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    text-align: center;
    margin-bottom: 28px;
}

.platform-examples {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.platform-card {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color var(--transition), background var(--transition);
}

.platform-card:hover {
    background: var(--glass-strong);
    border-color: var(--border-strong);
}

.platform-card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 14px;
    color: var(--text-secondary);
}

.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 100px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.badge-instagram {
    background: rgba(225, 48, 108, 0.15);
    color: #f06292;
    border: 1px solid rgba(225, 48, 108, 0.25);
}

.badge-tiktok {
    background: rgba(0, 242, 234, 0.12);
    color: #4dd0e1;
    border: 1px solid rgba(0, 242, 234, 0.2);
}

.url-example {
    font-size: 0.78rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    line-height: 1.5;
}

.url-example .before {
    color: var(--muted);
    display: block;
    margin-bottom: 4px;
    word-break: break-all;
}

.url-example .arrow {
    color: var(--accent);
    display: block;
    margin: 6px 0;
    font-size: 1rem;
    font-family: sans-serif;
}

.url-example .after {
    color: var(--accent-2);
    font-weight: 600;
    display: block;
    word-break: break-all;
}

/* ── Fullscreen mode (video page) ────────────────────────────── */
body.body-fullscreen {
    overflow: auto;
}

body.body-fullscreen .site-footer {
    display: none;
}

/* ── Video page — two-column layout ─────────────────────────── */
.vp-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 0;
    align-items: start;
    width: 100%;
    min-height: calc(100vh - 70px);
    margin-top: 70px;
}

/* ── Embed column ────────────────────────────────────────────── */
.vp-embed-col {
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: #000;
    min-height: calc(100vh - 70px);
}

.vp-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    flex-shrink: 0;
    gap: 10px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.video-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 5px 12px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--glass);
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.video-back:hover {
    color: var(--text);
    background: var(--glass-strong);
    border-color: var(--border-strong);
    opacity: 1;
}

/* ── Embed container ─────────────────────────────────────────── */
.embed-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #000;
    /* Не ставим overflow:hidden — это блокирует скролл внутри Instagram iframe */
}

.instagram-embed-wrap,
.tiktok-embed-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    line-height: 0;
}

.instagram-embed-wrap blockquote.instagram-media,
.tiktok-embed-wrap blockquote.tiktok-embed {
    margin: 0 !important;
    min-width: unset !important;
    width: 100% !important;
    max-width: 100% !important;
    flex: 1;
}

.instagram-embed-wrap iframe,
.tiktok-embed-wrap iframe {
    width: 100% !important;
    height: 100% !important;
    min-height: 500px;
}

.embed-notice { display: none; }

/* ── Sidebar ─────────────────────────────────────────────────── */
.vp-sidebar {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px 16px;
    border-left: 1px solid var(--border);
    background: var(--bg-2);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

/* Open original button */
.vp-original-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(124, 108, 252, 0.35);
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    text-align: center;
    flex-shrink: 0;
}

.vp-original-btn:hover {
    opacity: 0.9;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(124, 108, 252, 0.5);
}

/* Copy button */
.vp-copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: var(--glass);
    border: 1px solid var(--border-strong);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.vp-copy-btn:hover {
    background: var(--glass-strong);
    border-color: var(--border-strong);
    color: var(--text);
}

.vp-copy-btn.copied {
    color: #4ade80;
    border-color: rgba(74, 222, 128, 0.3);
}

.vp-copy-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.vp-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
    flex-shrink: 0;
}

.vp-sidebar-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 0 2px;
    flex-shrink: 0;
}

/* Sidebar form */
.vp-form { flex-shrink: 0; }

.vp-form .vp-form-inner {
    display: flex;
    gap: 8px;
    background: var(--glass);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 4px 4px 4px 12px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.vp-form .vp-form-inner:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.vp-url-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 0.85rem;
    color: var(--text);
    padding: 6px 0;
    min-width: 0;
}

.vp-url-input::placeholder { color: var(--muted); }

.vp-submit {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    border: none;
    border-radius: var(--radius-xs);
    padding: 8px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition);
}

.vp-submit:hover { opacity: 0.85; }
.vp-submit:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 2px;
}

/* ── Fallback .video-page (error fallback, не используется) ──── */
.video-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 120px 24px 80px;
    min-height: 100vh;
    max-width: 680px;
    margin: 0 auto;
    width: 100%;
}

/* ── Error page ──────────────────────────────────────────────── */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 140px 24px 80px;
    min-height: 100vh;
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
}

.error-code {
    font-size: clamp(4rem, 15vw, 8rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--border-strong), var(--muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.error-title {
    font-size: clamp(1.2rem, 4vw, 1.75rem);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.error-message {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.error-hint {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 36px;
    line-height: 1.6;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 100px;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    border: none;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 3px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(124, 108, 252, 0.4);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(124, 108, 252, 0.55);
    color: #fff;
}

.btn-secondary {
    background: var(--glass);
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
    background: var(--glass-strong);
    color: var(--text);
    opacity: 1;
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 40px 24px;
    margin-top: auto;
}

.footer-inner {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.footer-logo {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text);
    background: linear-gradient(135deg, #fff, var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-tagline {
    font-size: 0.8rem;
    color: var(--muted);
    border-left: 1px solid var(--border);
    padding-left: 12px;
}

.footer-tg {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: var(--glass);
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.footer-tg:hover {
    color: var(--text);
    background: var(--glass-strong);
    border-color: var(--border-strong);
    opacity: 1;
}

.footer-legal {
    max-width: 720px;
    margin: 0 auto;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.footer-legal p {
    font-size: 0.75rem;
    color: var(--muted);
    text-align: center;
    line-height: 1.7;
}

/* ── Utility classes ─────────────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Responsive ──────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 768px) {
    .platform-examples {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .url-form-inner {
        flex-direction: column;
        border-radius: var(--radius);
        padding: 12px;
        gap: 8px;
    }

    .url-input {
        padding: 8px 8px;
        font-size: 1rem;
    }

    .url-submit {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 1rem;
    }

    /* Video page: на планшете — вертикальный скролл */
    .vp-layout {
        grid-template-columns: 1fr;
        min-height: auto;
        margin-top: 0;
    }

    .vp-embed-col {
        min-height: 60vw;
    }

    .embed-container {
        min-height: 400px;
    }

    .vp-sidebar {
        position: static;
        height: auto;
        overflow: visible;
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: start;
        padding: 16px;
    }

    .vp-divider        { grid-column: 1 / -1; }
    .vp-sidebar-label  { grid-column: 1 / -1; }
    .vp-form           { grid-column: 1 / -1; }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --header-float-x: 12px;
        --header-float-y: 8px;
    }

    .site-header {
        width: calc(100vw - 24px);
        top: 12px;
        animation: floatHeaderMobile 50s ease-in-out infinite;
    }

    .header-inner {
        padding: 10px 16px;
    }

    .header-logo {
        font-size: 0.95rem;
    }

    .header-tg {
        font-size: 0.75rem;
        padding: 4px 10px;
    }

    .hero {
        padding-top: 100px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .video-page {
        padding-top: 100px;
    }

    /* Video page mobile */
    .vp-sidebar {
        grid-template-columns: 1fr;
    }

    .vp-layout {
        margin-top: 0;
    }
}

/* Mobile floating: much smaller range, stays within viewport */
@keyframes floatHeaderMobile {
    0%   { transform: translateX(-50%) translate3d(0px,  0px, 0); }
    25%  { transform: translateX(-50%) translate3d(10px, 6px, 0); }
    50%  { transform: translateX(-50%) translate3d(0px,  8px, 0); }
    75%  { transform: translateX(-50%) translate3d(-10px,4px, 0); }
    100% { transform: translateX(-50%) translate3d(0px,  0px, 0); }
}

@media (prefers-reduced-motion: reduce) {
    .site-header {
        animation: none !important;
        transform: translateX(-50%) !important;
    }
}