/* ── CSS Variables ── */
:root {
  --bg:          #07090f;
  --surface:     #0d1117;
  --surface2:    #141a26;
  --surface3:    #1b2235;
  --border:      #1e2640;
  --border-hi:   #2d3760;
  --accent:      #7c6af7;
  --accent-h:    #9183ff;
  --accent-dim:  rgba(124, 106, 247, 0.14);
  --accent-glow: rgba(124, 106, 247, 0.22);
  --text:        #f0f4ff;
  --muted:       #9daac8;
  --green:       #22c55e;
  --yellow:      #f59e0b;
  --red:         #ef4444;
  --orange:      #f97316;
  --blue:        #3b82f6;
  --radius:      12px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.25);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.4), 0 12px 40px rgba(0,0,0,0.25);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-weight: 500;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(ellipse 70% 45% at 50% -5%, rgba(124, 106, 247, 0.10) 0%, transparent 65%),
    radial-gradient(circle at 1px 1px, rgba(124, 106, 247, 0.055) 1px, transparent 0);
  background-size: auto, 30px 30px;
}

/* ── Screen reader only ── */
.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;
}

/* ── Skip link ── */
.skip-link {
  position: absolute; top: -9999px; left: 1rem; z-index: 999;
  background: var(--accent); color: #fff; padding: 0.6rem 1.2rem;
  border-radius: 0 0 var(--radius) var(--radius); font-weight: 700;
  text-decoration: none; transition: top 0.1s;
}
.skip-link:focus { top: 0; }

/* ── Focus styles ── */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--surface2); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Animations ── */
@keyframes slideIn  { from { transform: translateX(110%); opacity: 0; } to { transform: translateX(0);   opacity: 1; } }
@keyframes slideOut { from { transform: translateX(0);    opacity: 1; } to { transform: translateX(110%); opacity: 0; } }
@keyframes fadeIn   { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse    { 0%,100% { box-shadow: 0 0 0 0 rgba(239,68,68,.6); } 50% { box-shadow: 0 0 0 6px rgba(239,68,68,0); } }
@keyframes countUp  { from { opacity: 0; transform: scale(0.88); } to { opacity: 1; transform: scale(1); } }
@keyframes liftIn   { from { transform: translateY(-10px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes shimmer  {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}
@keyframes dashSpin  { to { stroke-dashoffset: -20; } }
@keyframes badgePulse { 0%,100% { opacity:1; transform:scale(1); } 50% { opacity:0.5; transform:scale(0.8); } }
@keyframes btnPulse  {
  0%,100% { box-shadow: 0 4px 24px var(--accent-glow), 0 1px 2px rgba(0,0,0,0.3); }
  50%     { box-shadow: 0 4px 48px rgba(124,106,247,0.55), 0 1px 2px rgba(0,0,0,0.3); }
}
@keyframes vsPulse {
  0%,100% { box-shadow: 0 0 0 0 var(--accent-dim), 0 0 12px var(--accent-dim); }
  50%     { box-shadow: 0 0 0 6px transparent,    0 0 24px var(--accent-glow); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Navbar ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(7, 9, 15, 0.82);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(30, 38, 64, 0.8);
}

.navbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 1.5rem;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}

.navbar-brand {
  display: flex; align-items: center; gap: 0.55rem;
  text-decoration: none; color: var(--text);
}

.brand-icon {
  width: 30px; height: 24px; color: var(--accent); flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.brand-name {
  font-size: 1.05rem; font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(120deg, #fff 0%, #c4bbff 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.navbar-right { display: flex; align-items: center; gap: 0.75rem; }

/* ── Credit badge ── */
.credit-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: transparent; border: 1px solid var(--border-hi);
  color: var(--muted); border-radius: 999px; padding: 0.28rem 0.9rem;
  font-size: 0.8rem; font-weight: 600; transition: border-color 0.2s, color 0.2s;
}
.credit-badge.low { border-color: var(--red); color: var(--red); animation: pulse 1.4s infinite; }

/* ── Upgrade button ── */
.btn-upgrade {
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);
  color: #fff; border: none; padding: 0.42rem 1.1rem; border-radius: 8px;
  font-size: 0.84rem; font-weight: 700; cursor: pointer;
  transition: opacity 0.18s, transform 0.12s, box-shadow 0.18s;
  box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-upgrade:hover { opacity: 0.88; transform: translateY(-1px); box-shadow: 0 4px 20px var(--accent-glow); }

/* ── Hero ── */
.hero {
  position: relative; text-align: center;
  padding: 7.5rem 1.5rem 2.75rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 1000px; height: 600px; pointer-events: none;
  background: radial-gradient(ellipse at center top,
    rgba(124, 106, 247, 0.18) 0%,
    rgba(124, 106, 247, 0.06) 40%,
    transparent 70%
  );
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.55rem;
  background: var(--accent-dim); border: 1px solid rgba(124,106,247,0.32);
  color: var(--accent); border-radius: 999px;
  padding: 0.38rem 1.05rem; font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 1.4rem; position: relative;
}
.hero-badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); flex-shrink: 0;
  animation: badgePulse 2.2s ease-in-out infinite;
}

.hero-title {
  font-size: 3.5rem; font-weight: 900;
  letter-spacing: -0.04em; line-height: 1.08;
  background: linear-gradient(140deg, #fff 0%, #d4cdff 40%, #a78bfa 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 0.85rem;
  position: relative;
}

.hero-subtitle {
  color: var(--muted); font-size: 1.08rem; font-weight: 400;
  margin-bottom: 1.75rem; position: relative; max-width: 520px; margin-left: auto; margin-right: auto;
}

.feature-pills {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 0.45rem;
  position: relative;
}

.pill {
  background: linear-gradient(135deg, var(--surface2) 0%, var(--surface3) 100%);
  border: 1px solid var(--border-hi);
  color: var(--muted); border-radius: 14px;
  padding: 0.55rem 1.1rem 0.5rem; font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.05em; text-transform: uppercase;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  display: inline-flex; flex-direction: column; align-items: center; gap: 0.35rem;
}
.pill:hover { border-color: var(--accent); color: var(--accent); }
.pill svg { display: block; flex-shrink: 0; transition: stroke 0.2s; }
.pill:hover svg { stroke: var(--accent); }
.pill-video svg  { stroke: #60a5fa; }
.pill-audio svg  { stroke: #a78bfa; }
.pill-image svg  { stroke: #34d399; }
.pill-subs svg   { stroke: #fbbf24; }
.pill-text svg   { stroke: #f87171; }

/* ── Landing content ── */
body.logged-in #landingContent { display: none; }

.landing-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 1rem;
}

.landing-block {
  text-align: center;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}
.landing-block:last-child { border-bottom: none; }

.landing-title {
  font-size: 2rem; font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.landing-subtitle {
  color: var(--muted); font-size: 1rem;
  margin-bottom: 2.5rem;
}

/* Demo showcase — live-comparison feature highlight */
.demo-showcase { padding-top: 3.5rem; padding-bottom: 3.5rem; }
.demo-showcase-wrap {
  max-width: 900px;
  margin: 1.5rem auto 0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45),
              0 0 0 1px var(--border);
}
.demo-showcase-wrap video {
  width: 100%;
  display: block;
  background: #000;
}

/* Steps */
.steps-row {
  display: flex; align-items: flex-start; justify-content: center;
  gap: 0; flex-wrap: wrap;
}
.step {
  flex: 1; min-width: 180px; max-width: 260px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.8rem 1.4rem;
  text-align: center;
}
.step-num {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent-dim); border: 1.5px solid var(--accent);
  color: var(--accent); font-weight: 800; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
}
.step-heading { font-size: 0.97rem; font-weight: 700; margin-bottom: 0.5rem; }
.step-desc { color: var(--muted); font-size: 0.875rem; line-height: 1.55; }
.step-connector {
  flex: 0 0 auto; padding: 0 0.6rem;
  font-size: 1.4rem; color: var(--border-hi);
  align-self: center; margin-top: -1rem;
}

/* Format cards */
.format-cards {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: center; margin-top: 0.5rem;
}
.format-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem 1.3rem;
  width: 190px; text-align: center;
  transition: border-color 0.18s, transform 0.18s;
}
.format-card:hover { border-color: var(--border-hi); transform: translateY(-2px); }

.format-card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 0.9rem;
}
.format-icon-video { background: rgba(96,165,250,0.12); color: #60a5fa; }
.format-icon-image { background: rgba(52,211,153,0.12); color: #34d399; }
.format-icon-audio { background: rgba(167,139,250,0.12); color: #a78bfa; }
.format-icon-subs  { background: rgba(251,191,36,0.12);  color: #fbbf24; }
.format-icon-text  { background: rgba(248,113,113,0.12); color: #f87171; }

/* QA use-cases — reuse format-card layout, slightly more padding + tagline */
.qa-use-cases .format-card { max-width: 320px; }
.qa-use-tagline {
  margin: 2rem auto 0;
  max-width: 720px;
  text-align: center;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.55;
}
.qa-use-tagline strong { color: var(--accent); font-weight: 700; }

.format-card-name {
  font-size: 0.97rem; font-weight: 700; margin-bottom: 0.75rem;
}
.format-card-metrics {
  list-style: none; text-align: left;
  display: flex; flex-direction: column; gap: 0.35rem;
}
.format-card-metrics li {
  color: var(--muted); font-size: 0.8rem;
  padding-left: 1rem; position: relative;
}
.format-card-metrics li::before {
  content: '·'; position: absolute; left: 0; color: var(--accent);
}

/* Pricing */
.pricing-row {
  display: flex; gap: 1.5rem; justify-content: center;
  flex-wrap: wrap; margin-top: 0.5rem;
}
.pricing-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 2rem 2rem 1.75rem;
  width: 260px; text-align: center; position: relative;
}
.pricing-card-pro {
  border-color: var(--accent);
  background: linear-gradient(160deg, rgba(124,106,247,0.08) 0%, var(--surface) 100%);
}
.pricing-badge-pro {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
  padding: 0.25rem 0.75rem; border-radius: 20px; white-space: nowrap;
}
.pricing-plan-name {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem;
}
.pricing-amount {
  font-size: 2.6rem; font-weight: 900; letter-spacing: -0.04em;
  margin-bottom: 1.25rem; line-height: 1;
}
.pricing-onetime {
  font-size: 0.85rem; font-weight: 400; color: var(--muted); letter-spacing: 0;
}
.pricing-features {
  list-style: none; text-align: left;
  display: flex; flex-direction: column; gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.pricing-features li {
  font-size: 0.875rem; color: var(--muted);
  padding-left: 1.3rem; position: relative;
}
.pricing-features li::before {
  content: '✓'; position: absolute; left: 0;
  color: var(--green); font-weight: 700;
}
.btn-pricing-cta {
  width: 100%; padding: 0.7rem 1rem; border-radius: 8px;
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
  border: none; transition: opacity 0.15s, transform 0.15s;
}
.btn-pricing-cta:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-pricing-free {
  background: var(--surface2); color: var(--text);
  border: 1px solid var(--border-hi);
}
.btn-pricing-pro {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 18px var(--accent-glow);
}

/* CTA block */
.landing-cta-block {
  text-align: center; padding: 3rem 0 4rem;
}
.landing-cta-text {
  color: var(--muted); font-size: 0.95rem; margin-bottom: 1.25rem;
}
.btn-start-now {
  background: var(--accent); color: #fff;
  border: none; border-radius: 10px;
  padding: 0.85rem 2.2rem; font-size: 1.05rem; font-weight: 700;
  cursor: pointer; letter-spacing: -0.01em;
  box-shadow: 0 4px 24px var(--accent-glow);
  transition: transform 0.15s, box-shadow 0.15s;
  animation: btnPulse 3s ease-in-out infinite;
}
.btn-start-now:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124,106,247,0.45);
  animation: none;
}

@media (max-width: 700px) {
  .landing-title { font-size: 1.5rem; }
  .steps-row { flex-direction: column; align-items: center; }
  .step-connector { transform: rotate(90deg); padding: 0.4rem 0; }
  .format-card { width: 100%; max-width: 340px; }
  .pricing-card { width: 100%; max-width: 340px; }
}

/* ── Main wrapper ── */
.main { max-width: 1160px; margin: 0 auto; padding: 0 1.5rem 5rem; }

/* ── Upload section ── */
.upload-section { margin-bottom: 2rem; }

.upload-grid {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 1.25rem; align-items: center; margin-bottom: 1.5rem;
}

.upload-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s, border-color 0.25s;
}
.upload-card:hover {
  border-color: var(--border-hi);
  box-shadow: 0 4px 24px rgba(124, 106, 247, 0.12), var(--shadow-sm);
}

.upload-label {
  padding: 0.6rem 1rem; background: var(--surface2);
  font-size: 0.7rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}

.drop-zone {
  position: relative; padding: 2.5rem 1.5rem;
  text-align: center; cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  min-height: 180px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.5rem;
  border: 2px dashed var(--border);
  border-top: none;
}

.drop-zone:hover, .drop-zone.drag-over {
  background: rgba(124, 106, 247, 0.07);
  border-color: var(--accent);
}
.drop-zone.has-file {
  background: rgba(34, 197, 94, 0.04);
  border-color: rgba(34, 197, 94, 0.4);
  border-style: solid;
}

.drop-icon { width: 42px; height: 42px; color: var(--border-hi); transition: color 0.2s, transform 0.2s; }
.drop-icon svg { width: 100%; height: 100%; }
.drop-zone:hover .drop-icon, .drop-zone.drag-over .drop-icon { color: var(--accent); transform: translateY(-2px); }
.drop-zone.has-file .drop-icon { color: var(--green); }

.drop-text { font-size: 0.88rem; color: var(--text); font-weight: 500; }
.drop-hint { font-size: 0.71rem; color: var(--muted); line-height: 1.5; }

.file-input {
  position: absolute; width: 0; height: 0;
  opacity: 0; pointer-events: none; overflow: hidden;
}

.file-info {
  padding: 0.5rem 1rem; font-size: 0.78rem; color: var(--muted);
  border-top: 1px solid var(--border); min-height: 2.1rem;
  display: flex; align-items: center;
}
.file-info.loaded { color: var(--green); }

/* ── VS Divider ── */
.vs-divider {
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; flex-shrink: 0;
  background: var(--surface2); border: 1px solid var(--border-hi);
  border-radius: 50%; font-size: 0.78rem; font-weight: 800;
  color: var(--accent); letter-spacing: 0.03em;
  box-shadow: 0 0 16px var(--accent-dim);
  animation: vsPulse 3s ease-in-out infinite;
}

/* ── Compare / Reset area ── */
.compare-area {
  text-align: center; margin: 0.75rem 0 0.9rem;
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
}

.btn-compare {
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);
  background-size: 200% auto;
  color: #fff; border: none; padding: 0.9rem 3.5rem;
  border-radius: 10px; font-size: 1rem; font-weight: 700;
  cursor: pointer; letter-spacing: -0.01em;
  transition: opacity 0.18s, transform 0.12s, box-shadow 0.18s;
  box-shadow: 0 4px 24px var(--accent-glow), 0 1px 2px rgba(0,0,0,0.3);
}
.btn-compare.ready {
  animation: btnPulse 2.4s ease-in-out infinite;
}
.btn-compare:hover:not(:disabled) {
  opacity: 0.9; transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(124,106,247,0.6), 0 1px 2px rgba(0,0,0,0.3);
  animation: shimmer 2s linear infinite;
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 50%, var(--accent) 100%);
  background-size: 200% auto;
}
.btn-compare:disabled { opacity: 0.3; cursor: not-allowed; box-shadow: none; animation: none; }

.btn-reset {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); padding: 0.88rem 2rem;
  border-radius: 10px; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.btn-reset:hover { color: var(--red); border-color: var(--red); background: rgba(239,68,68,0.06); }

/* ── Download row ── */
.download-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }

/* ── Flexible comparison checkbox ── */
.feature-mode-row { text-align: center; margin-bottom: 0.5rem; }
.feature-mode-label {
  display: inline-flex; align-items: flex-start; gap: 0.5rem; cursor: pointer;
  padding: 0.55rem 0.85rem; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface2);
  transition: border-color 0.2s, background 0.2s; text-align: left;
}
.feature-mode-label:hover { border-color: var(--accent); background: var(--accent-dim); }
.feature-mode-label input[type="checkbox"] {
  margin-top: 2px; accent-color: var(--accent); width: 15px; height: 15px; flex-shrink: 0;
}
.feature-mode-text { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.88rem; color: var(--text); font-weight: 500; }
.feature-mode-hint { font-size: 0.74rem; color: var(--muted); font-weight: 400; }

/* ── Credit cost note ── */
.credit-cost { text-align: center; font-size: 0.76rem; color: var(--muted); margin: 0.5rem 0 1.5rem; }

/* ── Progress ── */
.progress-wrap { margin-bottom: 2rem; }

.progress-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 0.55rem;
}
.progress-label { font-size: 0.82rem; color: var(--muted); margin: 0; }
.progress-pct {
  font-size: 1rem; font-weight: 700; color: var(--accent);
  font-variant-numeric: tabular-nums; min-width: 3ch; text-align: right;
  transition: opacity 0.2s;
}
.progress-pct:empty { opacity: 0; }

.progress-bar {
  height: 8px; background: var(--surface2); border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #a78bfa, var(--accent));
  background-size: 200% 100%;
  border-radius: 4px; transition: width 0.4s ease;
  animation: shimmer 2s linear infinite; width: 0%;
}
.progress-footer {
  display: flex; align-items: center; justify-content: center;
  margin-top: 0.75rem;
}
.btn-stop {
  background: transparent; border: 1px solid var(--border-hi);
  color: var(--muted); font-size: 0.78rem; padding: 0.25rem 0.8rem;
  border-radius: 6px; cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.btn-stop:hover { color: var(--red); border-color: var(--red); }

/* ── Results ── */
.results { display: flex; flex-direction: column; gap: 1.25rem; animation: fadeIn 0.35s ease; }

/* ── Score card ── */
.score-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 2.25rem 1.5rem;
  text-align: center; box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.score-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), #a78bfa, var(--accent));
}

.score-value {
  font-size: 5.5rem; font-weight: 900; line-height: 1;
  margin-bottom: 0.3rem; letter-spacing: -0.03em;
  animation: countUp 0.45s cubic-bezier(0.34,1.56,0.64,1);
}
.score-value.high   { color: var(--green);  text-shadow: 0 0 80px rgba(34,197,94,0.28);  }
.score-value.medium { color: var(--yellow); text-shadow: 0 0 80px rgba(245,158,11,0.28); }
.score-value.low    { color: var(--red);    text-shadow: 0 0 80px rgba(239,68,68,0.28);  }

.score-label { color: var(--muted); font-size: 0.95rem; margin-bottom: 0.8rem; font-weight: 500; }

/* ── Quality badge ── */
.quality-badge {
  display: inline-block; padding: 0.3rem 1rem; border-radius: 999px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.05em;
  margin-bottom: 1.5rem; border: 1px solid currentColor;
  background: rgba(255,255,255,0.04);
}

.metrics-grid {
  display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center;
}

.metric-item {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.9rem 1.5rem; min-width: 120px;
  transition: border-color 0.2s, transform 0.15s;
}
.metric-item:hover { border-color: var(--border-hi); transform: translateY(-1px); }

.metric-value { font-size: 1.45rem; font-weight: 800; color: var(--text); }
.metric-label {
  font-size: 0.65rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.25rem;
}

/* ── Extra metrics row ── */
.extra-metrics {
  margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
}
.extra-metrics-title {
  font-size: 0.7rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 0.75rem;
}
.extra-metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0.6rem; }

.extra-metric-item {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.65rem 1rem;
}
.extra-metric-value { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.extra-metric-label { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; margin-top: 0.15rem; }

/* ── Action buttons row ── */
.result-actions {
  display: flex; gap: 0.6rem; justify-content: center;
  flex-wrap: wrap; margin-top: 1.25rem;
}
.btn-action {
  background: var(--surface2); color: var(--muted);
  border: 1px solid var(--border); padding: 0.55rem 1.25rem;
  border-radius: 8px; font-size: 0.83rem; font-weight: 600; cursor: pointer;
  transition: color 0.18s, border-color 0.18s, background 0.18s, transform 0.12s;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.btn-action:hover {
  color: var(--text); border-color: var(--accent);
  background: var(--accent-dim); transform: translateY(-1px);
}

.export-info-tip {
  display: inline-flex; align-items: center;
  color: var(--muted); cursor: default;
  position: relative;
}
.export-info-tip svg { opacity: 0.55; transition: opacity 0.15s; }
.export-info-tip:hover svg { opacity: 1; }
.export-info-tooltip {
  display: none;
  position: absolute; bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  background: var(--surface3); border: 1px solid var(--border-hi);
  color: var(--muted); font-size: 0.78rem; line-height: 1.45;
  padding: 0.45rem 0.7rem; border-radius: 7px;
  white-space: nowrap; pointer-events: none;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}
.export-info-tip:hover .export-info-tooltip { display: block; }

/* ── Section cards ── */
.section-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); animation: fadeIn 0.3s ease;
}
.section-title {
  padding: 0.8rem 1.25rem; background: var(--surface2);
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.07em;
  display: flex; align-items: center; gap: 0.5rem;
}
.section-body { padding: 1.25rem; }

/* Collapsible section-card via <details> */
.section-card details { }
.section-card details > summary {
  list-style: none; cursor: pointer; user-select: none;
}
.section-card details > summary::-webkit-details-marker { display: none; }
.section-card details > summary.section-title::after {
  content: '▶';
  margin-left: auto;
  font-size: 0.65em;
  transition: transform 0.2s;
  display: inline-block;
}
.section-card details[open] > summary.section-title::after {
  transform: rotate(90deg);
}

/* ── Worst second badge ── */
.worst-badge {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.25);
  color: var(--red); border-radius: 8px; padding: 0.55rem 1.1rem;
  font-size: 0.92rem; font-weight: 600;
}

/* ── Timeline chart ── */
.chart-wrap { position: relative; height: 230px; }

/* ── Image display ── */
.img-grid { display: grid; gap: 0.75rem; }
.img-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.img-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.img-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.img-wrap { border-radius: 8px; overflow: hidden; background: var(--surface2); }
.img-wrap img { width: 100%; height: auto; max-height: 320px; object-fit: contain; display: block; }

.img-caption { padding: 0.35rem 0.6rem; font-size: 0.7rem; color: var(--muted); text-align: center; }
.img-caption--label { color: #fff; font-weight: 600; }

/* ── Live comparison button ── */
.live-compare-trigger .section-body { padding: 1.5rem; }
.btn-live-compare {
  background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);
  color: #fff; border: none; padding: 0.88rem 2.5rem; border-radius: 10px;
  font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: opacity 0.18s, transform 0.12s;
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-live-compare:hover { opacity: 0.88; transform: translateY(-2px); }
.live-compare-hint { margin-top: 0.6rem; font-size: 0.76rem; color: var(--muted); }
.live-progress-label { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.4rem; }

.live-waiting {
  display: flex; flex-direction: column; align-items: center;
  gap: 1rem; padding: 1.5rem 1rem; text-align: center;
}
.live-waiting-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border-hi);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.live-waiting-title {
  font-size: 1rem; font-weight: 700; color: var(--text);
}
.live-waiting-sub {
  font-size: 0.82rem; color: var(--muted); max-width: 340px; line-height: 1.5;
}
.live-waiting-bar-wrap { width: 100%; max-width: 360px; }
.live-waiting-pct { font-size: 0.78rem; color: var(--muted); margin-top: 0.35rem; }

/* ── Warning modal ── */
.warning-modal {
  border: none; background: transparent; padding: 0;
  max-width: 480px; width: calc(100% - 2rem);
}
.warning-modal::backdrop { background: rgba(0,0,0,0.7); backdrop-filter: blur(6px); }
.warning-modal-card {
  background: var(--surface); border: 1px solid var(--border-hi);
  border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow-md);
}
.warning-modal-title { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.85rem; }
.warning-modal-body { font-size: 0.9rem; color: var(--muted); margin-bottom: 0.75rem; line-height: 1.6; }
.warning-list {
  list-style: none; margin: 0 0 1rem;
  display: flex; flex-direction: column; gap: 0.4rem;
}
.warning-list li {
  font-size: 0.84rem; color: var(--text); padding: 0.4rem 0.75rem;
  background: var(--surface2); border-radius: 6px;
  border-left: 3px solid var(--yellow);
}
.warning-modal-actions { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1.25rem; }

/* ── Synchronized video player ── */
.live-player-body { padding: 1.25rem; }
.sync-panels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-bottom: 0.75rem; }
.sync-panel { background: #000; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.sync-panel-label {
  padding: 0.4rem 0.75rem; font-size: 0.7rem; font-weight: 700;
  color: #fff; text-transform: uppercase; letter-spacing: 0.07em;
  background: var(--surface2); border-bottom: 1px solid var(--border);
}
.sync-panel video { width: 100%; max-height: 270px; display: block; background: #000; cursor: pointer; }

.player-controls {
  background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.65rem 1rem; display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
}
.btn-play-pause {
  background: var(--accent); color: #fff; border: none; border-radius: 6px;
  padding: 0.38rem 1.1rem; font-size: 0.85rem; font-weight: 700;
  cursor: pointer; min-width: 68px; flex-shrink: 0; transition: background 0.15s;
}
.btn-play-pause:hover { background: var(--accent-h); }
.sync-seek { flex: 1; min-width: 80px; height: 4px; accent-color: var(--accent); cursor: pointer; }
.sync-time { font-size: 0.78rem; color: var(--muted); white-space: nowrap; flex-shrink: 0; font-variant-numeric: tabular-nums; }
.sync-speed { background: var(--surface); border: 1px solid var(--border); color: var(--text); border-radius: 6px; padding: 0.3rem 0.5rem; font-size: 0.8rem; cursor: pointer; flex-shrink: 0; }

@media (max-width: 700px) { .sync-panels { grid-template-columns: 1fr; } }

/* ── Bad frames grid ── */
.bad-frames-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.75rem; }
.bad-frame-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.bad-frame-img-wrap img { width: 100%; height: auto; display: block; }
.bad-frame-meta { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0.65rem; gap: 0.5rem; }
.bad-frame-time { font-size: 0.7rem; font-weight: 700; color: var(--muted); background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 0.15rem 0.45rem; }
.bad-frame-score { font-size: 0.7rem; font-weight: 700; }
.section-title-note { font-size: 0.68rem; font-weight: 400; color: var(--muted); margin-right: 0.5rem; }

/* ── Heatmap legend ── */
.heatmap-legend { display: flex; align-items: center; gap: 0.6rem; margin-top: 0.75rem; font-size: 0.74rem; color: var(--muted); }
.legend-bar {
  flex: 1; height: 7px; border-radius: 4px;
  background: linear-gradient(90deg, #00007f,#0000ff,#007fff,#00ffff,#00ff7f,#00ff00,#7fff00,#ffff00,#ff7f00,#ff0000,#7f0000);
}

/* ── Error display ── */
.error-box {
  background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.25);
  color: var(--red); border-radius: var(--radius); padding: 1rem 1.25rem; font-size: 0.9rem;
}

/* ── History panel ── */
.history-panel {
  margin-top: 2rem; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.history-toggle {
  width: 100%; padding: 0.9rem 1.25rem; background: var(--surface2);
  border: none; color: var(--text); font-size: 0.88rem; font-weight: 700;
  cursor: pointer; text-align: left; display: flex; align-items: center;
  justify-content: space-between; transition: background 0.15s;
  font-family: inherit;
}
.history-toggle:hover { background: rgba(124,99,255,0.06); }
.history-toggle::after { content: '▾'; font-size: 0.8rem; color: var(--muted); transition: transform 0.2s; }
.history-toggle[aria-expanded="true"]::after { transform: rotate(180deg); }

.history-list { list-style: none; padding: 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; animation: fadeIn 0.2s ease; }

.history-item {
  background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.75rem 1rem; display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; font-size: 0.82rem;
  transition: border-color 0.15s;
}
.history-item:hover { border-color: var(--border-hi); }

.history-item-score { font-size: 1.1rem; font-weight: 800; flex-shrink: 0; }
.history-item-info { flex: 1; min-width: 0; }
.history-item-name { font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-item-meta { color: var(--muted); font-size: 0.73rem; margin-top: 0.15rem; }
.history-empty { padding: 1rem; text-align: center; color: var(--muted); font-size: 0.84rem; }

/* ── Upgrade modal ── */
dialog.upgrade-modal {
  position: fixed; inset: 0; margin: auto;
  max-height: calc(100vh - 2rem); overflow-y: auto;
  background: var(--surface); border: 1px solid var(--border-hi);
  border-radius: var(--radius); padding: 0;
  max-width: 680px; width: calc(100% - 2rem);
  color: var(--text); animation: liftIn 0.25s cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: var(--shadow-md);
}
dialog.upgrade-modal::backdrop { background: rgba(0,0,0,0.75); backdrop-filter: blur(6px); }

.modal-card { padding: 2rem; position: relative; }
.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--muted); width: 32px; height: 32px; border-radius: 50%;
  cursor: pointer; font-size: 1.1rem; display: flex; align-items: center;
  justify-content: center; transition: background 0.15s, color 0.15s;
}
.modal-close:hover { background: var(--border); color: var(--text); }
.modal-title { font-size: 1.5rem; font-weight: 900; margin-bottom: 0.35rem; letter-spacing: -0.02em; }
.modal-desc { color: var(--muted); font-size: 0.88rem; margin-bottom: 1.5rem; }

/* ── Credits offer card ── */
.credits-offer {
  background: var(--surface2); border: 1px solid var(--accent);
  border-radius: var(--radius); padding: 1.5rem;
  box-shadow: 0 0 28px var(--accent-dim); margin-bottom: 1rem;
}
.credits-offer-top {
  display: flex; align-items: baseline; gap: 0.5rem; margin-bottom: 0.25rem;
}
.credits-offer-amount {
  font-size: 2.8rem; font-weight: 900; color: var(--accent); line-height: 1;
}
.credits-offer-label {
  font-size: 1rem; font-weight: 700; color: var(--muted);
}
.credits-offer-price {
  font-size: 1.6rem; font-weight: 900; color: var(--text);
  margin-bottom: 1rem;
}
.credits-offer-onetme {
  font-size: 0.8rem; font-weight: 500; color: var(--muted);
}
.credits-offer-features { margin-bottom: 1.25rem; }

.plan-features { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.plan-features li { font-size: 0.82rem; color: var(--muted); padding-left: 1.25rem; position: relative; }
.plan-features li::before { content: '✓'; position: absolute; left: 0; color: var(--green); font-weight: 700; }

.credits-free-note {
  text-align: center; font-size: 0.8rem; color: var(--muted);
  margin-bottom: 1.25rem;
}

.btn-buy-credits {
  width: 100%; padding: 0.9rem; background: var(--accent); color: #fff;
  border: none; border-radius: 10px; font-size: 1rem; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: background 0.18s, transform 0.12s;
}
.btn-buy-credits:hover { background: var(--accent-h); transform: translateY(-1px); }
.btn-buy-credits:active { transform: translateY(0); }

.coming-soon-note {
  width: 100%; padding: 0.88rem; background: var(--surface3);
  border: 1px dashed var(--border-hi); border-radius: 8px;
  font-size: 0.85rem; color: var(--muted); text-align: center;
}

.promo-section { border-top: 1px solid var(--border); padding-top: 1.25rem; }
.promo-label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--muted); margin-bottom: 0.5rem; }
.promo-row { display: flex; gap: 0.5rem; }
.promo-input {
  flex: 1; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 0.65rem 1rem;
  font-size: 0.9rem; font-family: inherit; transition: border-color 0.18s;
}
.promo-input:focus { outline: 2px solid var(--accent); outline-offset: 2px; border-color: var(--accent); }
.btn-activate {
  background: var(--accent); color: #fff; border: none; padding: 0.65rem 1.4rem;
  border-radius: 8px; font-size: 0.9rem; font-weight: 700; cursor: pointer;
  white-space: nowrap; transition: background 0.18s, opacity 0.18s;
  font-family: inherit;
}
.btn-activate:hover { background: var(--accent-h); }
.promo-error { margin-top: 0.4rem; font-size: 0.8rem; color: var(--red); min-height: 1.2em; }

/* ── Feedback float button ── */
.btn-feedback-float {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: #fff; border: none;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(124,106,247,0.45);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-feedback-float:hover { transform: translateY(-2px); box-shadow: 0 6px 22px rgba(124,106,247,0.55); }

/* ── Feedback modal ── */
.feedback-modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0; width: min(420px, 92vw);
  color: var(--text); box-shadow: var(--shadow-md);
}
.feedback-modal::backdrop { background: rgba(0,0,0,0.6); backdrop-filter: blur(2px); }
.feedback-modal-card { padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.feedback-modal-header { display: flex; align-items: center; justify-content: space-between; }
.feedback-modal-title { font-size: 1rem; font-weight: 700; }
.feedback-modal-close { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 1rem; padding: 0.2rem 0.4rem; border-radius: 4px; }
.feedback-modal-close:hover { color: var(--text); }
.feedback-modal-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.5; margin: 0; }
.feedback-field { display: flex; flex-direction: column; gap: 0.35rem; }
.feedback-label { font-size: 0.75rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.feedback-select {
  background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 0.5rem 0.75rem; font-size: 0.88rem; font-family: inherit;
}
.feedback-textarea {
  background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 0.65rem 0.75rem; font-size: 0.88rem;
  font-family: inherit; resize: vertical; min-height: 110px;
  transition: border-color 0.15s;
}
.feedback-textarea:focus { outline: none; border-color: var(--accent); }
.feedback-char-count { font-size: 0.72rem; color: var(--muted); text-align: right; }
.feedback-error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); border-radius: 8px; padding: 0.6rem 0.8rem; font-size: 0.82rem; color: #ef4444; }
.feedback-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* ── Toast notifications ── */
.toast-container {
  position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 500;
  display: flex; flex-direction: column; gap: 0.5rem; pointer-events: none;
}
.toast {
  background: var(--surface2); border: 1px solid var(--border-hi);
  color: var(--text); border-radius: 10px; padding: 0.75rem 1.25rem;
  font-size: 0.86rem; font-weight: 600; pointer-events: auto;
  animation: slideIn 0.3s cubic-bezier(0.34,1.56,0.64,1) forwards;
  max-width: 320px; box-shadow: var(--shadow-md);
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--accent); }
.toast.warning { border-left: 3px solid var(--yellow); }
.toast.removing { animation: slideOut 0.3s ease forwards; }

/* ── Cookie banner ── */
.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: rgba(13, 17, 23, 0.96); backdrop-filter: blur(12px);
  border-top: 1px solid var(--border); padding: 1rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; animation: fadeIn 0.3s ease;
}
.cookie-banner[hidden] { display: none; }
.cookie-text { font-size: 0.84rem; color: var(--muted); flex: 1; }
.cookie-actions { display: flex; gap: 0.6rem; }
.btn-cookie-accept {
  background: var(--accent); color: #fff; border: none; padding: 0.45rem 1.1rem;
  border-radius: 8px; font-size: 0.84rem; font-weight: 700;
  cursor: pointer; transition: background 0.18s; font-family: inherit;
}
.btn-cookie-accept:hover { background: var(--accent-h); }
.btn-cookie-decline {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  padding: 0.45rem 1.1rem; border-radius: 8px; font-size: 0.84rem; font-weight: 600;
  cursor: pointer; transition: color 0.18s, border-color 0.18s; font-family: inherit;
}
.btn-cookie-decline:hover { color: var(--text); border-color: var(--muted); }

/* ── Footer ── */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--border);
  padding: 1.75rem 1.5rem; margin-top: 3rem;
}
.footer-inner {
  max-width: 1160px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem;
  align-items: center; font-size: 0.81rem; color: var(--muted);
}
.footer-purpose { text-align: center; }
.footer-links { text-align: right; display: flex; gap: 1rem; justify-content: flex-end; flex-wrap: wrap; }
.footer-links a { color: var(--muted); text-decoration: none; transition: color 0.18s; }
.footer-links a:hover { color: var(--accent); }

/* ── Legal pages ── */
.legal-page { max-width: 780px; margin: 0 auto; padding: 7rem 1.5rem 5rem; }
.legal-page h1 {
  font-size: 2rem; font-weight: 900; margin-bottom: 0.4rem; letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, #c4bbff 50%, #a78bfa 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.legal-last-updated { color: var(--muted); font-size: 0.84rem; margin-bottom: 2rem; }
.legal-section { margin-bottom: 2rem; }
.legal-section h2 {
  font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 0.6rem;
  padding-bottom: 0.4rem; border-bottom: 1px solid var(--border);
}
.legal-section p, .legal-section li { font-size: 0.9rem; color: var(--muted); line-height: 1.8; margin-bottom: 0.5rem; }
.legal-section ul { padding-left: 1.4rem; }
.legal-back {
  display: inline-flex; align-items: center; gap: 0.4rem; color: var(--accent);
  text-decoration: none; font-size: 0.88rem; font-weight: 600; margin-bottom: 2rem;
  transition: opacity 0.18s;
}
.legal-back:hover { opacity: 0.7; }

/* ── Responsive ── */
@media (max-width: 780px) {
  .hero-title      { font-size: 2.1rem; }
  .upload-grid     { grid-template-columns: 1fr; }
  .vs-divider      { border-radius: var(--radius); width: 100%; height: 2.5rem; }
  .score-value     { font-size: 3.8rem; }
  .img-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .img-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-inner    { grid-template-columns: 1fr; text-align: center; }
  .footer-links    { justify-content: center; }
  .pricing-row     { grid-template-columns: 1fr; }
  .promo-row       { flex-direction: column; }
}

@media (max-width: 480px) {
  .navbar-inner { padding: 0 1rem; }
  .brand-name   { font-size: 0.9rem; }
  .main         { padding: 0 1rem 4rem; }
  .hero         { padding: 5.5rem 1rem 2rem; }
  .hero-title   { font-size: 1.75rem; }
}

/* ── QA verdict card ── */
.qa-verdict-card {
  background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.18);
  border-radius: 12px; padding: 1.1rem 1.4rem; margin-bottom: 0.75rem;
}
.qa-verdict-header { display: flex; align-items: center; gap: 0.45rem; margin-bottom: 0.55rem; }
.qa-verdict-icon { font-size: 1rem; }
.qa-verdict-title { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--muted); }
.qa-verdict-main { font-size: 0.95rem; color: var(--text); line-height: 1.6; margin-bottom: 0.55rem; }
.qa-verdict-time { color: var(--accent); }
.qa-verdict-meta { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.82rem; color: var(--muted); }

/* ── QA frame cards ── */
.qa-frames-list { display: flex; flex-direction: column; gap: 1.1rem; }
.qa-frame-card { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.qa-frame-header { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 1rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.qa-frame-time { font-size: 1rem; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; min-width: 2.5rem; }
.qa-frame-score { font-size: 0.87rem; font-weight: 600; }
.qa-frame-region { font-size: 0.8rem; color: var(--muted); margin-left: auto; }
.qa-frame-images { display: grid; grid-template-columns: 1fr 1fr; }
.qa-frame-img-wrap { position: relative; }
.qa-frame-img-wrap img { width: 100%; display: block; }
.qa-frame-img-wrap:first-child { border-right: 1px solid var(--border); }
.qa-frame-label {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.6); color: #fff; font-size: 0.66rem;
  font-weight: 700; text-align: center; padding: 0.2rem 0;
  text-transform: uppercase; letter-spacing: 0.07em;
}
.qa-heatmap-details { border-top: 1px solid var(--border); }
.qa-heatmap-details summary {
  padding: 0.45rem 1rem; font-size: 0.8rem; color: var(--muted);
  cursor: pointer; user-select: none; list-style: none; transition: color 0.15s;
}
.qa-heatmap-details summary:hover { color: var(--text); }
.qa-heatmap-details summary::-webkit-details-marker { display: none; }
.qa-heatmap-details summary::before { content: '▶  '; font-size: 0.6rem; }
.qa-heatmap-details[open] summary::before { content: '▼  '; }
.qa-heatmap-img { width: 100%; display: block; }

@media (max-width: 580px) {
  .qa-frame-images { grid-template-columns: 1fr; }
  .qa-frame-region { margin-left: 0; width: 100%; }
  .qa-frame-img-wrap:first-child { border-right: none; border-bottom: 1px solid var(--border); }
}

/* ── Audio comparison ── */
.audio-players { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.audio-player-wrap { display: flex; flex-direction: column; gap: 0.45rem; }
.audio-player-label { font-size: 0.76rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; }
.audio-player { width: 100%; border-radius: 8px; accent-color: var(--accent); }
.audio-info { margin-top: 0.75rem; font-size: 0.82rem; color: var(--muted); }

.spectrogram-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.spec-wrap { display: flex; flex-direction: column; gap: 0.35rem; }
.spectrogram-img { width: 100%; border-radius: 6px; display: block; border: 1px solid var(--border); }
.spec-caption { font-size: 0.76rem; color: var(--muted); text-align: center; }

.audio-metrics-grid { display: flex; flex-direction: column; gap: 1rem; }
.audio-metric-item { display: flex; flex-direction: column; gap: 0.35rem; }
.audio-metric-info { display: flex; justify-content: space-between; align-items: baseline; }
.audio-metric-label { font-size: 0.82rem; color: var(--muted); }
.audio-metric-value { font-size: 0.92rem; font-weight: 700; color: var(--text); }
.audio-metric-bar-wrap { background: rgba(255,255,255,0.05); border-radius: 999px; height: 6px; overflow: hidden; }
.audio-metric-bar {
  height: 100%; background: linear-gradient(90deg, var(--accent), #a78bfa);
  border-radius: 999px; transition: width 1s cubic-bezier(0.4,0,0.2,1);
}
.audio-metric-note { margin-top: 0.9rem; font-size: 0.76rem; color: var(--muted); text-align: center; }

@media (max-width: 640px) {
  .audio-players    { grid-template-columns: 1fr; }
  .spectrogram-grid { grid-template-columns: 1fr; }
}

/* ── Subtitle comparison ── */
.srt-stats-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 0.75rem; margin-bottom: 0.25rem;
}
.srt-stat {
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.75rem 0.5rem; text-align: center;
}
.srt-stat-val { font-size: 1.3rem; font-weight: 700; color: var(--text); display: block; }
.srt-stat-label { font-size: 0.66rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.07em; display: block; margin-top: 0.25rem; }

.srt-ok   { border-color: rgba(34,197,94,.3); }
.srt-ok   .srt-stat-val { color: var(--green); }
.srt-warn { border-color: rgba(245,158,11,.3); }
.srt-warn .srt-stat-val { color: var(--yellow); }
.srt-err  { border-color: rgba(239,68,68,.3); }
.srt-err  .srt-stat-val { color: var(--red); }
.srt-info { border-color: rgba(59,130,246,.3); }
.srt-info .srt-stat-val { color: var(--blue); }

.srt-legend { display: flex; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.srt-legend-item { font-size: 0.72rem; font-weight: 600; padding: 0.2rem 0.65rem; border-radius: 4px; }
.srt-legend-match   { background: rgba(34, 197,  94, 0.1); color: var(--green);  }
.srt-legend-replace { background: rgba(245,158,  11, 0.1); color: var(--yellow); }
.srt-legend-delete  { background: rgba(239, 68,  68, 0.1); color: var(--red);    }
.srt-legend-insert  { background: rgba(59, 130, 246, 0.1); color: var(--blue);   }

.srt-table-wrap {
  overflow-x: auto; overflow-y: auto;
  max-height: 460px; border: 1px solid var(--border); border-radius: 8px;
}
.srt-diff-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.srt-diff-table thead th {
  position: sticky; top: 0; background: var(--surface2); color: var(--muted);
  font-weight: 700; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.55rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); z-index: 1;
}
.srt-diff-table tbody tr { border-bottom: 1px solid rgba(255,255,255,0.03); }
.srt-diff-table tbody tr:last-child { border-bottom: none; }
.srt-diff-table tbody tr:hover { background: rgba(255,255,255,0.02); }
.srt-row-replace { background: rgba(245,158, 11, 0.07); }
.srt-row-delete  { background: rgba(239, 68, 68, 0.07); }
.srt-row-insert  { background: rgba(59, 130,246, 0.07); }
.srt-cell-idx   { padding: 0.42rem 0.75rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; width: 2.5rem; }
.srt-cell-text  { padding: 0.42rem 0.75rem; color: var(--text); width: 44%; max-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.srt-row-delete .srt-cell-text:nth-child(2) { color: var(--red); }
.srt-row-insert .srt-cell-text:nth-child(3) { color: var(--blue); }
/* ── Text diff split-panel ── */
.tdiff-view {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.82rem; border: 1px solid var(--border); border-radius: 8px;
  overflow: hidden; overflow-x: auto;
}
.tdiff-header, .tdiff-row {
  display: grid;
  grid-template-columns: 2.8rem 1fr 2.8rem 1fr;
  min-width: 500px;
}
.tdiff-header {
  background: var(--surface3); border-bottom: 1px solid var(--border);
}
.tdiff-head-label {
  padding: 0.4rem 0.75rem; font-size: 0.72rem; font-weight: 700;
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em;
}
.tdiff-row { border-bottom: 1px solid rgba(255,255,255,0.03); }
.tdiff-row:last-child { border-bottom: none; }
.tdiff-num {
  padding: 0.38rem 0.5rem; text-align: right; color: var(--muted);
  font-size: 0.75rem; background: var(--surface2); user-select: none;
  border-right: 1px solid var(--border); min-width: 2.8rem;
}
.tdiff-cell {
  padding: 0.38rem 0.75rem; white-space: pre-wrap; word-break: break-all;
  color: var(--text); line-height: 1.5;
}
.char-match { background: rgba(34,197,94,0.25);  color: #4ade80; border-radius: 2px; padding: 0 1px; }
.char-diff  { background: rgba(239,68,68,0.30);  color: #ff8080; border-radius: 2px; padding: 0 1px; }
.srt-cell-drift { padding: 0.42rem 0.75rem; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; font-size: 0.78rem; }

@media (max-width: 640px) { .srt-stats-grid { grid-template-columns: repeat(3, 1fr); } }

/* ── Mode toggle ── */
.compare-mode-toggle {
  display: flex; gap: 0; margin-bottom: 1.25rem;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden; width: fit-content; padding: 3px;
  gap: 3px;
}
.mode-btn {
  padding: 0.5rem 1.25rem; background: transparent;
  border: none; color: var(--muted);
  font-size: 0.84rem; font-weight: 600; cursor: pointer;
  transition: background 0.18s, color 0.18s; border-radius: 7px;
  font-family: inherit;
}
.mode-btn:hover { background: rgba(124,99,255,0.1); color: var(--text); }
.mode-btn.active { background: var(--surface3); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }

/* ── Paste grid ── */
.paste-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.paste-card { display: flex; flex-direction: column; gap: 0.4rem; }
.paste-label { font-size: 0.72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.paste-input {
  width: 100%; min-height: 220px; resize: vertical;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 0.82rem; line-height: 1.6; padding: 0.75rem 1rem;
  transition: border-color 0.18s; outline: none;
}
.paste-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.paste-footer { display: flex; justify-content: flex-end; }
.paste-counter { font-size: 0.7rem; color: var(--muted); }
.paste-counter.over-limit { color: var(--red); font-weight: 700; }

@media (max-width: 640px) { .paste-grid { grid-template-columns: 1fr; } }

/* ── Media info table ── */
.minfo-table {
  width: 100%; border-collapse: collapse; font-size: 0.82rem;
}
.minfo-table th {
  text-align: left; padding: 0.4rem 0.75rem;
  color: var(--muted); font-weight: 600; font-size: 0.75rem;
  border-bottom: 1px solid var(--border); text-transform: uppercase; letter-spacing: 0.05em;
}
.minfo-table td {
  padding: 0.38rem 0.75rem; border-bottom: 1px solid rgba(255,255,255,0.03);
  color: var(--text);
}
.minfo-table tr:last-child td { border-bottom: none; }
.minfo-label { color: var(--muted); width: 35%; }
.minfo-diff td { background: rgba(245,158,11,0.06); }
.minfo-diff .minfo-label { background: transparent; }

/* Lazy File Info — initial state is just a button, table fetched on click */
.file-info-body { display: flex; flex-direction: column; gap: 0.75rem; }
.btn-show-file-info {
  align-self: flex-start;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.btn-show-file-info:hover:not(:disabled) {
  background: var(--surface3);
  border-color: var(--accent);
}
.btn-show-file-info:disabled { opacity: 0.55; cursor: wait; }
.file-info-content[hidden] { display: none; }

/* ── Auth modal ── */
.btn-google {
  width: 100%; display: flex; align-items: center; justify-content: center;
  gap: 0.65rem; padding: 0.78rem 1rem; margin-bottom: 0.1rem;
  background: #fff; color: #3c4043; border: 1px solid #dadce0;
  border-radius: 8px; font-size: 0.88rem; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: background 0.15s, box-shadow 0.15s;
}
.btn-google:hover { background: #f8f9fa; box-shadow: 0 1px 6px rgba(0,0,0,0.22); }

.auth-divider {
  display: flex; align-items: center; gap: 0.7rem;
  color: var(--muted); font-size: 0.76rem; margin: 0.6rem 0 0.2rem;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

.auth-tabs {
  display: flex; gap: 3px; margin-bottom: 1.25rem;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 10px; padding: 3px; width: fit-content;
}
.auth-tab {
  padding: 0.45rem 1.2rem; background: transparent; border: none;
  color: var(--muted); font-size: 0.84rem; font-weight: 600;
  cursor: pointer; border-radius: 7px; font-family: inherit;
  transition: background 0.18s, color 0.18s;
}
.auth-tab.active { background: var(--surface3); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }
.auth-tab:hover:not(.active) { background: rgba(124,99,255,0.1); color: var(--text); }

.auth-form { display: flex; flex-direction: column; gap: 0.9rem; }
.auth-field { display: flex; flex-direction: column; gap: 0.35rem; }
.auth-label { font-size: 0.82rem; font-weight: 600; color: var(--muted); }
.auth-submit { width: 100%; padding: 0.85rem; margin-top: 0.25rem; }

.auth-hint { font-size: 0.71rem; color: var(--muted); margin-top: 0.2rem; line-height: 1.4; }

.auth-tos { flex-direction: row !important; align-items: flex-start; gap: 0.55rem !important; }
.auth-tos-label {
  display: flex; align-items: flex-start; gap: 0.55rem;
  font-size: 0.8rem; color: var(--muted); cursor: pointer; line-height: 1.4;
}
.auth-tos-label input[type="checkbox"] {
  margin-top: 0.15rem; flex-shrink: 0;
  accent-color: var(--accent); width: 15px; height: 15px; cursor: pointer;
}
.auth-link { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.auth-link:hover { opacity: 0.8; }

.auth-switch { text-align: center; font-size: 0.82rem; color: var(--muted); margin-top: 1rem; }
.auth-switch-btn {
  background: none; border: none; color: var(--accent);
  font-size: 0.82rem; font-weight: 700; cursor: pointer;
  font-family: inherit; text-decoration: underline; text-underline-offset: 2px;
}
.auth-switch-btn:hover { opacity: 0.8; }

/* ── User chip (navbar) ── */
.user-chip {
  display: inline-flex; align-items: center;
  background: var(--accent-dim); border: 1px solid rgba(124,106,247,0.3);
  border-radius: 999px; padding: 0.3rem 0.85rem;
}
.user-chip-name {
  font-size: 0.8rem; font-weight: 700; color: var(--accent);
}

/* ── Logout button ── */
.btn-logout {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); padding: 0.42rem 1rem;
  border-radius: 8px; font-size: 0.84rem; font-weight: 600;
  cursor: pointer; transition: color 0.18s, border-color 0.18s; font-family: inherit;
}
.btn-logout:hover { color: var(--red); border-color: var(--red); }

/* ── JSON diff ── */
.json-diff-section { margin-top: 1rem; }
.json-diff-title { font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 0.4rem; }
.srt-warn-text { color: var(--yellow); }
.srt-err-text  { color: var(--red);    }
.srt-info-text { color: var(--blue);   }
.json-path {
  font-family: 'Cascadia Code','Fira Code','Consolas', monospace;
  font-size: 0.78rem; color: var(--accent);
  white-space: nowrap; max-width: 280px; overflow: hidden; text-overflow: ellipsis;
}

/* ── Sample-files row (under upload grid) ── */
.sample-row {
  display: flex; align-items: center; justify-content: center;
  gap: 0.7rem; row-gap: 0.85rem; flex-wrap: wrap;
  margin: 1.5rem 0 1.75rem;
}
.sample-row-label {
  font-size: 0.82rem; color: var(--muted);
  width: 100%; text-align: center;
  margin-bottom: 0.35rem;
}
.btn-sample {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.38rem 0.9rem; border-radius: 8px;
  font-size: 0.82rem; font-weight: 600; font-family: inherit;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.btn-sample:hover:not(:disabled) {
  color: var(--accent); border-color: var(--accent);
  background: var(--accent-dim);
}
.btn-sample:disabled { opacity: 0.55; cursor: progress; }