/* Shorts Captions — static site design system.
   Same visual tokens as the Flask version, flat file paths. */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('fonts/Inter-300.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/Inter-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/Inter-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/Inter-600.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Serif Display';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/DMSerifDisplay-400.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('fonts/JetBrainsMono-300.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/JetBrainsMono-400.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/JetBrainsMono-500.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/JetBrainsMono-600.woff2') format('woff2');
}

:root {
  --font-serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', Consolas, monospace;

  --ground: #F6F3EE;
  --surface: #EEEBE5;
  --surface-hover: #E6E3DD;
  --surface-active: rgba(200, 146, 42, 0.08);
  --text: #1C1B19;
  --text-secondary: #6B6862;
  --text-placeholder: #A8A49E;
  --accent: #C8922A;
  --accent-hover: #B5831F;
  --accent-text: #FFFFFF;
  --error: #C45B4A;
  --error-tint: rgba(196, 91, 74, 0.12);
  --border: rgba(28, 27, 25, 0.10);
  --border-strong: rgba(28, 27, 25, 0.18);
  --border-dashed: rgba(28, 27, 25, 0.12);
  --gradient-end: transparent;
  --toggle-bg: rgba(28, 27, 25, 0.06);
  --toggle-icon-active: var(--text);
  --toggle-icon-inactive: var(--text-placeholder);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-zone: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #1C1B19;
    --surface: #262523;
    --surface-hover: #2E2D2A;
    --surface-active: rgba(232, 169, 78, 0.06);
    --text: #E8E4DE;
    --text-secondary: #7A7670;
    --text-placeholder: #55524E;
    --accent: #E8A94E;
    --accent-hover: #D49A42;
    --accent-text: #1C1B19;
    --error: #D97A69;
    --error-tint: rgba(217, 122, 105, 0.1);
    --border: rgba(232, 228, 222, 0.07);
    --border-strong: rgba(232, 228, 222, 0.12);
    --border-dashed: rgba(232, 228, 222, 0.06);
    --gradient-end: transparent;
    --toggle-bg: rgba(232, 228, 222, 0.05);
    --toggle-icon-active: var(--text);
    --toggle-icon-inactive: var(--text-placeholder);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-zone: 0 1px 2px rgba(0, 0, 0, 0.1);
  }
}

:root[data-theme="dark"] {
  --ground: #1C1B19;
  --surface: #262523;
  --surface-hover: #2E2D2A;
  --surface-active: rgba(232, 169, 78, 0.06);
  --text: #E8E4DE;
  --text-secondary: #7A7670;
  --text-placeholder: #55524E;
  --accent: #E8A94E;
  --accent-hover: #D49A42;
  --accent-text: #1C1B19;
  --error: #D97A69;
  --error-tint: rgba(217, 122, 105, 0.1);
  --border: rgba(232, 228, 222, 0.07);
  --border-strong: rgba(232, 228, 222, 0.12);
  --border-dashed: rgba(232, 228, 222, 0.06);
  --gradient-end: transparent;
  --toggle-bg: rgba(232, 228, 222, 0.05);
  --toggle-icon-active: var(--text);
  --toggle-icon-inactive: var(--text-placeholder);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-zone: 0 1px 2px rgba(0, 0, 0, 0.1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--ground);
  color: var(--text);
  font-family: var(--font-sans);
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s ease, color 0.2s ease;
}

.shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
}

a { color: inherit; }

/* ── Header ── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav { display: flex; gap: 1.5rem; align-items: baseline; }

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.15s;
  cursor: pointer;
}
.nav-link:hover { color: var(--text); }
.nav-link.is-active { color: var(--text); font-weight: 500; }

.header-right { display: flex; align-items: center; gap: 1.5rem; }

.branding { text-align: right; }
.branding-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--accent);
  line-height: 1.1;
}
.branding-version {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* ── Theme toggle ── */
.theme-toggle {
  display: flex;
  background: var(--toggle-bg);
  border-radius: 6px;
  padding: 3px;
  gap: 2px;
  border: none;
}
.theme-toggle-btn {
  width: 30px; height: 28px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  padding: 0;
}
.theme-toggle-btn svg { width: 15px; height: 15px; transition: stroke 0.2s; }
.theme-toggle-btn.active { background: var(--surface); box-shadow: var(--shadow); }
.theme-toggle-btn.active svg { stroke: var(--toggle-icon-active); }
.theme-toggle-btn:not(.active) svg { stroke: var(--toggle-icon-inactive); }
.theme-toggle-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ── Page heading ── */
.page-heading { padding: 2.5rem 0 0.25rem; }
.page-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.85rem;
  line-height: 1.15;
  margin: 0;
}
.title-rule {
  height: 1px;
  border: none;
  margin: 0.6rem 0 2.2rem;
  background: linear-gradient(90deg, var(--accent) 0%, var(--gradient-end) 65%);
}

/* ── Form sections ── */
.section { margin-bottom: 2rem; }

.field-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.text-input {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 300;
  color: var(--text);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-strong);
  width: 100%;
  padding: 0.5rem 0;
  outline: none;
  transition: border-color 0.2s;
}
.text-input::placeholder { color: var(--text-placeholder); font-weight: 300; }
.text-input:focus { border-bottom-color: var(--accent); }

/* ── Upload grid ── */
.upload-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

.upload-zone {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  padding: 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  border-radius: 3px;
  position: relative;
  min-height: 110px;
  box-shadow: var(--shadow-zone);
}
.upload-zone:hover { background: var(--surface-hover); border-color: var(--accent); }
.upload-zone.has-file { background: var(--surface-active); border-color: var(--accent); }
.upload-zone.is-dragover { background: var(--surface-active); border-color: var(--accent); }

.upload-icon svg { width: 22px; height: 22px; stroke: var(--text-secondary); stroke-width: 1.5; fill: none; transition: stroke 0.2s; }
.upload-zone:hover .upload-icon svg { stroke: var(--accent); }

.upload-name { font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text); }
.upload-hint { font-family: var(--font-mono); font-size: 0.52rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-secondary); }
.upload-filename { font-family: var(--font-mono); font-size: 0.58rem; color: var(--accent); word-break: break-all; text-align: center; max-width: 100%; }
.upload-filename:empty { display: none; }
.upload-warning { font-family: var(--font-mono); font-size: 0.56rem; color: var(--error); text-align: center; max-width: 100%; }
.upload-warning:empty { display: none; }

.upload-remove {
  position: absolute; top: 6px; right: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  background: none; border: none;
  padding: 2px 6px;
  line-height: 1;
}
.upload-remove:hover { color: var(--text); }
.upload-zone input[type="file"] { display: none; }

/* ── Tooltips ── */
.tooltip-anchor { position: relative; }
.tooltip-anchor .tooltip {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--ground);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.45;
  padding: 0.55rem 0.75rem;
  border-radius: 4px;
  white-space: normal;
  width: max-content;
  max-width: 260px;
  text-align: left;
  pointer-events: none;
  z-index: 10;
  text-transform: none;
  letter-spacing: normal;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.tooltip-anchor .tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--text);
}
.tooltip-anchor:hover .tooltip { visibility: visible; opacity: 1; }

/* ── Validation / error ── */
.error-box {
  border: 1px solid var(--error);
  background: var(--surface);
  border-radius: 3px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 2rem;
}
.error-box .field-label { color: var(--error); margin-bottom: 0.3rem; }
.error-box p { margin: 0; font-family: var(--font-sans); font-size: 0.88rem; }

/* ── Buttons ── */
.btn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border-strong);
  padding: 0.8rem 1.6rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  border-radius: 2px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn:hover { background: var(--surface); border-color: var(--accent); }

.generate-btn {
  color: var(--accent-text);
  background: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.8rem 2rem;
  margin-top: 0.5rem;
}
.generate-btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.generate-btn:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }
.generate-btn:disabled { opacity: 0.4; cursor: default; background: var(--accent); border-color: var(--accent); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* ── Shorts-specific ── */
.section-desc {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.5;
}

.section-separator {
  height: 1px;
  border: none;
  background: var(--border);
  margin: 2.5rem 0;
}

.param-row {
  display: flex;
  gap: 2rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.param-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 80px;
  max-width: 120px;
}
.param-field .field-label { margin-bottom: 0; }
.param-field .text-input {
  width: 100%;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ── History table ── */
.history-empty { text-align: center; padding: 5rem 2rem; }
.history-empty-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--surface);
  margin: 0 auto 1.5rem;
  display: flex; align-items: center; justify-content: center;
}
.history-empty-circle svg { width: 28px; height: 28px; stroke: var(--text-placeholder); stroke-width: 1.5; fill: none; }
.history-empty-title { font-family: var(--font-serif); font-size: 1.15rem; margin-bottom: 0.4rem; }
.history-empty-sub { font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-secondary); letter-spacing: 0.04em; }

.history-list { display: flex; flex-direction: column; }
.history-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.history-row:first-child { border-top: 1px solid var(--border); }
.history-name { font-family: var(--font-sans); font-weight: 500; font-size: 0.9rem; color: var(--text); }
.history-time { font-family: var(--font-mono); font-size: 0.56rem; color: var(--text-secondary); letter-spacing: 0.03em; white-space: nowrap; }
.history-status { font-family: var(--font-mono); font-size: 0.58rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; }
.history-status-dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }

.checkbox { width: 15px; height: 15px; accent-color: var(--accent); }

.btn-sm {
  font-size: 0.58rem;
  padding: 0.4rem 0.9rem;
  letter-spacing: 0.08em;
}

.shorts-history-row {
  grid-template-columns: auto 1fr auto auto auto;
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--text);
  color: var(--ground);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 400;
  padding: 0.65rem 1.25rem;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  z-index: 100;
  opacity: 1;
  transition: opacity 0.4s ease, transform 0.4s ease;
  white-space: nowrap;
}
.toast.is-hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(8px);
  pointer-events: none;
}
.toast a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
}
.toast a:hover { text-decoration: underline; }
.toast .toast-sep {
  margin: 0 0.5em;
  opacity: 0.4;
}

/* ── Footer ── */
.footer { padding: 3rem 0 2rem; text-align: center; }
.footer-line { width: 24px; height: 1px; background: var(--border); margin: 0 auto; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .shell { padding: 0 1.25rem 3rem; }
  .upload-grid { grid-template-columns: 1fr; }
  .page-title { font-size: 1.45rem; }
  .branding-title { font-size: 0.9rem; }
  .header { flex-wrap: wrap; gap: 0.75rem; }
  .history-row { grid-template-columns: auto 1fr auto; gap: 0.75rem; }
  .param-row { gap: 1rem; }
  .param-field { min-width: 70px; }
  .shorts-history-row { grid-template-columns: auto 1fr auto; gap: 0.75rem; }
  .shorts-history-row .history-time { grid-column: 2 / -1; }
}

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

/* Script examples remain hidden until the heading is hovered or focused. */
.example-anchor { display: inline-block; cursor: help; }
.example-anchor:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.tooltip-anchor:focus-within .tooltip { visibility: visible; opacity: 1; }
.example-anchor .script-example { position: fixed; left: 16px; top: 16px; bottom: auto; transform: none; width: 340px; max-width: calc(100vw - 32px); padding: 6px; background: #fff; border: 1px solid var(--border-strong); }
.example-anchor #resync-example { width: 680px; }
.example-anchor .script-example::after { display: none; }
.script-example img { display: block; width: 100%; height: auto; max-height: calc(100vh - 48px); object-fit: contain; }