/* ============================================================
   VideoBox - Design System
   Dark glassmorphism + vibrant gradient aesthetics
   ============================================================ */

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

:root {
  --bg:          #0a0a0f;
  --bg2:         #0f0f1a;
  --surface:     rgba(255,255,255,0.05);
  --surface-h:   rgba(255,255,255,0.09);
  --border:      rgba(255,255,255,0.10);
  --border-h:    rgba(255,255,255,0.20);
  --text:        #e8e8f0;
  --text-muted:  #7878a0;
  --accent1:     #6c63ff;
  --accent2:     #ff6b9d;
  --accent3:     #00d8b4;
  --accent4:     #ffd93d;
  --radius:      18px;
  --radius-sm:   10px;
  --shadow:      0 8px 40px rgba(0,0,0,0.5);
  --font:        'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Background Orbs ── */
.bg-orbs { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  animation: drift 20s ease-in-out infinite alternate;
}
.orb-1 { width: 600px; height: 600px; background: var(--accent1); top: -200px; left: -100px; animation-delay: 0s; }
.orb-2 { width: 500px; height: 500px; background: var(--accent2); bottom: -150px; right: -100px; animation-delay: -7s; }
.orb-3 { width: 400px; height: 400px; background: var(--accent3); top: 40%; left: 50%; animation-delay: -14s; }

@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(60px, 40px) scale(1.15); }
}

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,15,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon { font-size: 1.6rem; }
.logo-text { font-size: 1.25rem; font-weight: 700; color: var(--text); }
.logo-badge {
  font-size: 0.65rem; font-weight: 600;
  padding: 2px 8px; border-radius: 20px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: #fff;
  letter-spacing: 0.03em;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

/* ── Language Switcher ── */
.lang-switcher { position: relative; margin-left: 16px; }
.lang-btn {
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font); font-size: 0.82rem; font-weight: 600;
  padding: 6px 14px; border-radius: 20px; cursor: pointer;
  display: flex; align-items: center; gap: 5px;
  transition: border-color .2s, background .2s;
}
.lang-btn:hover { border-color: var(--border-h); background: var(--surface-h); }
.lang-caret { font-size: 0.65rem; opacity: .7; }
.lang-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0;
  min-width: 120px;
  background: rgba(15,15,26,0.95); backdrop-filter: blur(16px);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  display: none; flex-direction: column; overflow: hidden; z-index: 200;
}
.lang-dropdown.open { display: flex; }
.lang-option {
  padding: 10px 16px; font-size: 0.85rem; color: var(--text-muted);
  text-decoration: none; transition: background .15s, color .15s;
  white-space: nowrap;
}
.lang-option:hover, .lang-option.active { background: rgba(108,99,255,0.12); color: var(--text); }
.lang-option.active { font-weight: 700; }

/* ── Hero ── */
.hero {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto;
  padding: 100px 24px 80px;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 60px;
}
.hero-content { display: flex; flex-direction: column; gap: 24px; }
.hero-tag {
  display: inline-flex; align-items: center;
  padding: 6px 16px; border-radius: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.8rem; color: var(--text-muted);
  width: fit-content;
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 800; line-height: 1.15;
  letter-spacing: -0.02em;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent1) 0%, var(--accent2) 50%, var(--accent3) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1rem; color: var(--text-muted); line-height: 1.8;
}
.hero-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: #fff; font-weight: 600; font-size: 1rem;
  text-decoration: none;
  box-shadow: 0 4px 24px rgba(108,99,255,0.4);
  transition: transform .2s, box-shadow .2s;
  width: fit-content;
}
.hero-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(108,99,255,0.55); }
.btn-arrow { font-size: 1.1rem; animation: bounce 1.5s ease-in-out infinite; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(4px)} }

/* Hero Visual */
.hero-visual {
  position: relative; height: 380px;
  display: flex; align-items: center; justify-content: center;
}
.center-blob {
  width: 200px; height: 200px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent1) 0%, var(--accent2) 50%, var(--accent3) 100%);
  opacity: 0.25; filter: blur(40px);
  animation: pulse 4s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{transform:scale(1); opacity:.25} 50%{transform:scale(1.2); opacity:.35} }

.floating-card {
  position: absolute;
  padding: 10px 18px; border-radius: 50px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  font-size: 0.85rem; font-weight: 600;
  box-shadow: var(--shadow);
  animation: float 6s ease-in-out infinite;
}
.fc-1 { top: 20px; left: 10%; animation-delay: 0s; }
.fc-2 { top: 20px; right: 10%; animation-delay: -1.5s; }
.fc-3 { bottom: 20px; left: 10%; animation-delay: -3s; }
.fc-4 { bottom: 20px; right: 10%; animation-delay: -4.5s; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ── Ad Slots & Sidebar Layout ── */
.page-outer {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) 160px;
  gap: 0 16px;
  max-width: 1460px;
  margin: 0 auto;
  align-items: start;
}
.sidebar-col {
  min-width: 0;
  padding-top: 40px;
}
.ad-sidebar-sticky {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
/* Horizontal banner (between sections) */
.adsense-h {
  max-width: 900px;
  margin: 20px auto;
  padding: 0 24px;
  min-height: 90px;
}
/* Legacy placeholder (dev only) */
.ad-slot {
  max-width: 900px; margin: 0 auto 24px;
  padding: 0 24px;
}
.ad-placeholder {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  height: 90px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 0.8rem;
}
@media (max-width: 1300px) {
  .page-outer { display: block; }
  .sidebar-col { display: none; }
}


/* ── Tools Section ── */
.tools-section {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto;
  padding: 20px 24px 80px;
}
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 2rem; font-weight: 700; margin-bottom: 10px; }
.section-header p { color: var(--text-muted); }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.tool-card {
  position: relative; overflow: hidden;
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  text-decoration: none; color: var(--text);
  display: flex; flex-direction: column; gap: 14px;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  cursor: pointer;
}
.tool-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-h);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.tool-card-glow {
  position: absolute; inset: -60px;
  border-radius: 50%;
  opacity: 0;
  filter: blur(60px);
  transition: opacity .4s;
  pointer-events: none;
}
.tool-card:hover .tool-card-glow { opacity: 0.12; }

#card-audio .tool-card-glow { background: var(--accent1); }
#card-transcribe .tool-card-glow { background: var(--accent2); }
#card-gif .tool-card-glow { background: var(--accent3); }
#card-frames .tool-card-glow { background: var(--accent4); }

.tool-icon-wrap {
  width: 56px; height: 56px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
}
.ic-audio { background: linear-gradient(135deg, rgba(108,99,255,.3), rgba(108,99,255,.1)); border: 1px solid rgba(108,99,255,.3); }
.ic-text  { background: linear-gradient(135deg, rgba(255,107,157,.3), rgba(255,107,157,.1)); border: 1px solid rgba(255,107,157,.3); }
.ic-gif   { background: linear-gradient(135deg, rgba(0,216,180,.3), rgba(0,216,180,.1)); border: 1px solid rgba(0,216,180,.3); }
.ic-frame { background: linear-gradient(135deg, rgba(255,217,61,.3), rgba(255,217,61,.1)); border: 1px solid rgba(255,217,61,.3); }

.tool-card h3 { font-size: 1.1rem; font-weight: 700; }
.tool-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; flex: 1; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 0.72rem; font-weight: 600; padding: 3px 10px;
  border-radius: 20px;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.tool-arrow {
  font-size: 1.2rem; font-weight: 700; align-self: flex-end;
  opacity: 0; transform: translateX(-8px);
  transition: opacity .25s, transform .25s;
}
.tool-card:hover .tool-arrow { opacity: 1; transform: translateX(0); }

/* ── Features ── */
.features-section {
  position: relative; z-index: 1;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 60px 24px;
}
.features-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
}
.feature-item { text-align: center; }
.fi-icon { font-size: 2.5rem; margin-bottom: 12px; }
.feature-item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-item p { font-size: 0.85rem; color: var(--text-muted); }

/* ── FAQ ── */
.faq-section {
  position: relative; z-index: 1;
  max-width: 800px; margin: 0 auto;
  padding: 80px 24px;
}
.faq-section h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 32px; text-align: center; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0;
  overflow: hidden;
  transition: border-color .2s;
}
.faq-item[open] { border-color: var(--border-h); }
.faq-item summary {
  padding: 18px 20px;
  cursor: pointer; user-select: none;
  font-weight: 600; font-size: 0.95rem;
  list-style: none; display: flex; justify-content: space-between;
}
.faq-item summary::after { content: '+'; font-size: 1.2rem; color: var(--text-muted); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 20px 18px; font-size: 0.88rem; color: var(--text-muted); line-height: 1.8; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
}
.footer-inner { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; align-items: center; }
.footer-logo { font-size: 1.2rem; font-weight: 700; color: var(--text); }
.footer p { font-size: 0.8rem; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; transition: color .2s; }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   Tool Pages - Shared
   ============================================================ */
.tool-page {
  position: relative; z-index: 1;
  max-width: 900px; margin: 0 auto;
  padding: 40px 24px 80px;
}
.page-header { margin-bottom: 40px; }
.page-back {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-muted); text-decoration: none; font-size: 0.85rem;
  margin-bottom: 20px; transition: color .2s;
}
.page-back:hover { color: var(--text); }
.page-header h1 { font-size: 2rem; font-weight: 700; display: flex; align-items: center; gap: 12px; }
.page-header p { margin-top: 8px; color: var(--text-muted); font-size: 0.95rem; }

/* Drop Zone */
.drop-zone {
  display: block;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  background: var(--surface);
  position: relative;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent1);
  background: rgba(108,99,255,0.06);
}
.dz-icon { font-size: 3rem; margin-bottom: 16px; display: block; }
.dz-label { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.dz-sub { font-size: 0.82rem; color: var(--text-muted); }
.dz-input { display: none; }

/* Control Panel */
.controls-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 24px;
  display: flex; flex-direction: column; gap: 20px;
}
.control-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.control-group { display: flex; flex-direction: column; gap: 6px; flex: 1; min-width: 140px; }
.control-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.control-group input[type="number"],
.control-group input[type="text"],
.control-group select {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color .2s;
}
.control-group input:focus, .control-group select:focus { border-color: var(--accent1); }
.control-group select option { background: #1a1a2e; }

.control-group input[type="range"] {
  width: 100%; accent-color: var(--accent1); cursor: pointer;
}

/* Buttons */
.btn-primary {
  padding: 14px 32px; border-radius: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: #fff; font-weight: 700; font-size: 0.95rem;
  font-family: var(--font);
  border: none; cursor: pointer;
  box-shadow: 0 4px 20px rgba(108,99,255,0.35);
  transition: transform .2s, box-shadow .2s, opacity .2s;
}
.btn-primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(108,99,255,0.5); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-secondary {
  padding: 12px 24px; border-radius: 50px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text); font-weight: 600; font-size: 0.9rem;
  font-family: var(--font);
  cursor: pointer; transition: border-color .2s, background .2s;
}
.btn-secondary:hover { border-color: var(--border-h); background: var(--surface-h); }

/* Progress */
.progress-wrap {
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: none;
}
.progress-wrap.show { display: block; }
.progress-label { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.progress-bar-bg {
  height: 8px; border-radius: 4px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  width: 0%;
  transition: width .4s ease;
  animation: shimmer 1.5s linear infinite;
  background-size: 200%;
}
@keyframes shimmer {
  0%   { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* Result */
.result-area {
  margin-top: 24px;
  display: none;
}
.result-area.show { display: block; }
.result-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column; gap: 16px;
}
.result-title { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); }
.result-download {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 50px;
  background: linear-gradient(135deg, var(--accent3), var(--accent1));
  color: #fff; font-weight: 600; font-size: 0.9rem;
  text-decoration: none;
  width: fit-content;
  transition: transform .2s;
}
.result-download:hover { transform: translateY(-2px); }

/* Transcript */
.transcript-box {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  font-size: 0.9rem; line-height: 1.9;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.copy-btn {
  align-self: flex-start;
  padding: 8px 18px;
  border-radius: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text); font-family: var(--font); font-size: 0.8rem;
  cursor: pointer; transition: background .2s;
}
.copy-btn:hover { background: var(--surface-h); }

/* Frame canvas area */
.frame-preview-wrap {
  margin-top: 20px;
  display: none;
}
.frame-preview-wrap.show { display: block; }
.video-hidden { display: none; }
#frameCanvas {
  width: 100%; border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #000;
}
.time-display {
  font-size: 1.2rem; font-weight: 700; font-variant-numeric: tabular-nums;
  text-align: center; padding: 10px;
  background: var(--surface); border-radius: var(--radius-sm);
}

/* GIF preview */
.gif-preview-img {
  max-width: 100%; border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.file-info {
  font-size: 0.8rem; color: var(--text-muted); padding: 8px 0;
}

/* Warning banner */
.warning-banner {
  display: flex; gap: 10px; align-items: flex-start;
  background: rgba(255,217,61,0.08);
  border: 1px solid rgba(255,217,61,0.25);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 0.83rem; color: #ffe066; line-height: 1.6;
}
.warning-banner span:first-child { font-size: 1.1rem; flex-shrink: 0; }

/* Status message */
.status-msg {
  font-size: 0.85rem; color: var(--text-muted);
  margin-top: 4px; min-height: 1.2em;
}
.status-msg.error { color: #ff6b6b; }
.status-msg.success { color: var(--accent3); }

/* Responsive */
@media (max-width: 768px) {
  .hero { grid-template-columns: 1fr; padding: 60px 16px 40px; gap: 40px; }
  .hero-visual { height: 240px; }
  .floating-card { font-size: 0.75rem; padding: 8px 14px; }
  .tools-grid { grid-template-columns: 1fr; }
  .features-inner { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 480px) {
  .features-inner { grid-template-columns: 1fr; }
}