/* ============================================
   SawitAI — Tropical Tech Aesthetic
   Instrument Serif + DM Sans + JetBrains Mono
   Deep emerald, warm gold, organic textures
   ============================================ */

:root {
  /* Palette — boosted contrast */
  --c-bg: #0c120c;
  --c-surface: #141e14;
  --c-surface-raised: #1c2c1c;
  --c-border: rgba(255, 255, 255, 0.08);
  --c-border-hover: rgba(255, 255, 255, 0.18);
  --c-text: #f0f5f0;
  --c-text-muted: #a3c4a3;
  --c-text-dim: #6a946a;

  --c-accent: #b8e04a;
  --c-accent-dim: rgba(184, 224, 74, 0.15);
  --c-gold: #e4b84a;
  --c-emerald: #2dd47b;
  --c-red: #f06060;
  --c-warn: #e4b84a;

  /* Typography */
  --f-display: 'Instrument Serif', Georgia, serif;
  --f-body: 'DM Sans', system-ui, sans-serif;
  --f-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;

  /* Radius */
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* Transitions */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

img, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input { font-family: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.hidden { display: none !important; }

/* ---- Ambient BG ---- */
.bg-grain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.bg-glow--1 {
  width: 600px;
  height: 600px;
  top: -200px;
  right: -100px;
  background: radial-gradient(circle, rgba(45, 212, 123, 0.08), transparent 70%);
}

.bg-glow--2 {
  width: 500px;
  height: 500px;
  bottom: -150px;
  left: -100px;
  background: radial-gradient(circle, rgba(184, 224, 74, 0.06), transparent 70%);
}

/* ---- Header ---- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  background: rgba(10, 15, 10, 0.8);
  border-bottom: 1px solid var(--c-border);
}

.header__inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo {
  width: 32px;
  height: 32px;
  color: var(--c-accent);
}

.header__logo svg { width: 100%; height: 100%; }

.header__title {
  font-family: var(--f-display);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.header__sub {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-text-muted);
  margin-top: -2px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  border: none;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}

.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn--primary {
  background: var(--c-accent);
  color: var(--c-bg);
}
.btn--primary:hover:not(:disabled) { background: #c8f05a; transform: translateY(-1px); box-shadow: 0 8px 30px rgba(184, 224, 74, 0.25); }
.btn--primary:disabled { opacity: 0.3; cursor: not-allowed; transform: none; box-shadow: none; }

.btn--accent {
  background: var(--c-accent);
  color: var(--c-bg);
}
.btn--accent:hover { background: #c8f05a; }

.btn--outline {
  background: transparent;
  color: var(--c-text);
  border: 1px solid var(--c-border-hover);
}
.btn--outline:hover { border-color: var(--c-accent); color: var(--c-accent); }

.btn--ghost {
  background: transparent;
  color: var(--c-text-muted);
  border: 1px solid transparent;
}
.btn--ghost:hover:not(:disabled) { color: var(--c-text); background: var(--c-surface-raised); }
.btn--ghost:disabled { opacity: 0.3; cursor: not-allowed; }

.btn--sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; border-radius: var(--r-sm); }
.btn--lg { padding: 0.875rem 1.5rem; font-size: 1rem; }
.btn--full { width: 100%; justify-content: center; }

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  border: 1px solid var(--c-border);
  background: transparent;
  color: var(--c-text-muted);
  transition: all 0.2s var(--ease);
}
.btn-icon svg { width: 20px; height: 20px; }
.btn-icon:hover { color: var(--c-text); border-color: var(--c-border-hover); background: var(--c-surface-raised); }
.btn-icon--sm { width: 32px; height: 32px; border: none; }
.btn-icon--sm svg { width: 16px; height: 16px; }
.btn-icon--danger:hover { color: var(--c-red); }

/* ---- Settings ---- */
.settings {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 380px;
  max-width: 90vw;
  z-index: 200;
  background: var(--c-surface);
  border-left: 1px solid var(--c-border);
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
}
.settings[data-open="true"] { transform: translateX(0); }

.settings__inner { padding: var(--space-lg); }

.settings__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.settings__title {
  font-family: var(--f-display);
  font-size: 1.5rem;
}

.settings__section { margin-bottom: var(--space-lg); }

.settings__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-bottom: var(--space-sm);
}

.settings__val {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--c-accent);
  font-weight: 500;
}

.settings__desc {
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--c-text-dim, rgba(255,255,255,0.4));
  margin: -2px 0 var(--space-sm) 0;
}

.settings__label--section {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-text);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-md);
  margin-top: var(--space-sm);
}

.settings__hint {
  font-size: 0.75rem;
  margin-top: var(--space-xs);
  color: var(--c-text-dim);
  min-height: 1.2em;
}
.settings__hint.success { color: var(--c-emerald); }
.settings__hint.error { color: var(--c-red); }

.settings__grid {
  display: grid;
  gap: var(--space-lg);
}

/* ---- Input ---- */
.input-group {
  display: flex;
  gap: var(--space-xs);
  align-items: stretch;
}

.input {
  flex: 1;
  padding: 0.6rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  outline: none;
  transition: border-color 0.2s;
}
.input:focus { border-color: var(--c-accent); }
.input::placeholder { color: var(--c-text-dim); }

/* ---- Slider ---- */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--c-surface-raised);
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  border: 3px solid var(--c-surface);
  box-shadow: 0 0 0 1px rgba(184, 224, 74, 0.3);
  transition: transform 0.15s var(--ease), box-shadow 0.15s;
}
.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 0 4px rgba(184, 224, 74, 0.15);
}

.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  border: 3px solid var(--c-surface);
}

.slider__labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: var(--c-text-dim);
  margin-top: 4px;
  font-family: var(--f-mono);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.slider-row .slider { flex: 1; }

.input-num {
  width: 72px;
  flex-shrink: 0;
  padding: 0.4rem 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  text-align: center;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-accent);
  outline: none;
  transition: border-color 0.2s;
  -moz-appearance: textfield;
}
.input-num:focus { border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(184, 224, 74, 0.1); }
.input-num::-webkit-outer-spin-button,
.input-num::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* ---- Main ---- */
.main {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-2xl);
}

/* ---- Hero ---- */
.hero {
  padding: var(--space-2xl) 0;
  text-align: center;
}

.hero__heading {
  font-family: var(--f-display);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.hero__line {
  display: block;
}

.hero__line--1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: var(--c-text);
  animation: fadeUp 0.6s var(--ease) both;
}

.hero__line--2 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  color: var(--c-accent);
  animation: fadeUp 0.6s 0.1s var(--ease) both;
}

.hero__line--2 em {
  font-style: italic;
}

.hero__line--3 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: var(--c-text);
  animation: fadeUp 0.6s 0.2s var(--ease) both;
}

.hero__desc {
  max-width: 500px;
  margin: 0 auto;
  color: var(--c-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  animation: fadeUp 0.6s 0.35s var(--ease) both;
}

/* ---- Notice ---- */
.notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--r-md);
  margin-bottom: var(--space-lg);
  border: 1px solid;
  animation: fadeUp 0.5s 0.4s var(--ease) both;
}

.notice__icon { flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; }
.notice__icon svg { width: 100%; height: 100%; }
.notice strong { display: block; font-size: 0.85rem; margin-bottom: 2px; }
.notice p { font-size: 0.8rem; opacity: 0.9; }

.notice--warn {
  background: rgba(228, 184, 74, 0.06);
  border-color: rgba(228, 184, 74, 0.15);
  color: var(--c-gold);
}

.notice--error {
  background: rgba(240, 96, 96, 0.06);
  border-color: rgba(240, 96, 96, 0.15);
  color: var(--c-red);
}

/* ---- Upload Zone ---- */
.upload-section {
  margin-bottom: var(--space-lg);
  animation: fadeUp 0.6s 0.45s var(--ease) both;
}

.upload {
  position: relative;
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  cursor: pointer;
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: transform 0.3s var(--ease);
}
.upload:hover { transform: scale(1.005); }

.upload__border {
  position: absolute;
  inset: 0;
  border-radius: var(--r-xl);
  border: 2px dashed var(--c-text-dim);
  opacity: 0.4;
  transition: all 0.3s var(--ease);
}
.upload:hover .upload__border,
.upload.drag-active .upload__border {
  border-color: var(--c-accent);
  opacity: 1;
}
.upload.drag-active {
  background: var(--c-accent-dim);
  transform: scale(1.01);
}

.upload__content { position: relative; z-index: 1; }

.upload__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  color: var(--c-text-dim);
  transition: color 0.3s;
}
.upload:hover .upload__icon { color: var(--c-accent); }
.upload__icon svg { width: 100%; height: 100%; }

.upload__title {
  font-family: var(--f-display);
  font-size: 1.35rem;
  margin-bottom: var(--space-xs);
}

.upload__subtitle {
  font-size: 0.85rem;
  color: var(--c-text);
  opacity: 0.7;
  margin-bottom: var(--space-md);
}

.upload__formats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--c-surface-raised);
  color: var(--c-text-muted);
  letter-spacing: 0.05em;
  border: 1px solid var(--c-border);
}

/* ---- Card ---- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--c-border);
}

.card__file-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 0;
}

.card__file-icon { font-size: 1.1rem; }
.card__file-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}
.card__file-size {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--c-text-dim);
}

.card__media {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--c-bg);
  min-height: 200px;
}
.card__media img,
.card__media video {
  max-height: 420px;
  object-fit: contain;
  width: 100%;
}

.card--center {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-2xl);
  text-align: center;
}

.card--flush canvas {
  width: 100%;
  display: block;
}

.card .btn--full {
  margin: var(--space-md) var(--space-lg) var(--space-lg);
  width: calc(100% - var(--space-lg) * 2);
}

/* ---- Loader ---- */
.loader {
  position: relative;
  width: 60px;
  height: 60px;
  margin-bottom: var(--space-lg);
}

.loader__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
}

.loader__ring:nth-child(1) {
  border-top-color: var(--c-accent);
  animation: spin 1s linear infinite;
}
.loader__ring:nth-child(2) {
  inset: 6px;
  border-right-color: var(--c-emerald);
  animation: spin 1.5s linear infinite reverse;
}
.loader__ring:nth-child(3) {
  inset: 12px;
  border-bottom-color: var(--c-gold);
  animation: spin 2s linear infinite;
}

.loader__text {
  font-family: var(--f-display);
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}
.loader__sub {
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

.progress {
  width: 100%;
  max-width: 300px;
  height: 6px;
  background: var(--c-surface-raised);
  border-radius: 3px;
  overflow: hidden;
  margin-top: var(--space-md);
}
.progress__bar {
  height: 100%;
  width: 0%;
  background: var(--c-accent);
  border-radius: 3px;
  transition: width 0.3s var(--ease);
}

/* ---- Results ---- */
.results__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.results__title {
  font-family: var(--f-display);
  font-size: 1.75rem;
}

.results__count {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--c-accent);
  background: var(--c-accent-dim);
  padding: 4px 14px;
  border-radius: 20px;
  margin-top: 6px;
}

/* Video Summary Stats */
.stats-row {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.stat {
  flex: 1;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
}

.stat__value {
  display: block;
  font-family: var(--f-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--c-accent);
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
}

@media (max-width: 640px) {
  .stats-row {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .stat {
    padding: var(--space-sm) var(--space-md);
  }
  .stat__value {
    font-size: 1.35rem;
  }
}

/* Frame Navigation */
.frame-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-top: 1px solid var(--c-border);
}
.frame-nav__indicator {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

/* ---- Table ---- */
.table-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--c-border);
}
.table-header h3 {
  font-family: var(--f-display);
  font-size: 1.1rem;
  font-weight: 400;
}

.table-wrap { overflow-x: auto; }

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.table thead {
  background: rgba(255, 255, 255, 0.02);
}

.table th {
  text-align: left;
  padding: 0.6rem var(--space-lg);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
  font-weight: 500;
}

.table td {
  padding: 0.7rem var(--space-lg);
  border-top: 1px solid var(--c-border);
  vertical-align: middle;
}

.table tr:hover td { background: rgba(255, 255, 255, 0.015); }

.table .cell-class {
  display: flex;
  align-items: center;
  gap: 8px;
}

.table .color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.table .conf-bar {
  width: 48px;
  height: 4px;
  border-radius: 2px;
  background: var(--c-surface-raised);
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
}
.table .conf-fill {
  height: 100%;
  border-radius: 2px;
}

.table .mono {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--c-text-dim);
}

/* ---- Footer ---- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--c-border);
  padding: var(--space-xl) 0;
}
.footer__inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--c-text-dim);
}
.footer__brand {
  font-family: var(--f-display);
  font-size: 0.9rem;
  color: var(--c-text-muted);
}
.footer__sep { opacity: 0.3; }

/* ---- Animations ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Settings overlay */
.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 190;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.settings-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .header__inner { padding: 0 var(--space-md); }
  .main { padding: 0 var(--space-md) var(--space-xl); }
  .hero { padding: var(--space-xl) 0; }
  .upload { padding: var(--space-xl) var(--space-md); }
  .card .btn--full { margin: var(--space-md); width: calc(100% - var(--space-md) * 2); }
  .card__header { padding: var(--space-md); }
  .table th, .table td { padding: 0.6rem var(--space-md); }
  .settings { width: 100%; max-width: 100%; }
  .results__header { flex-direction: column; gap: var(--space-md); }
}