/* =========================================================
   FinovoCalc Subtitle Tools
   Design language: a cinema subtitle bar. Dark "theater" mode
   by default, amber accent lifted from classic burned-in
   subtitle text, teal accent lifted from waveform/timecode
   readouts. A horizontal "timecode ruler" motif recurs as the
   site's signature structural device.
   ========================================================= */

:root {
  --bg: #0b0d12;
  --bg-alt: #12151c;
  --bg-card: #171b24;
  --bg-card-hover: #1d222d;
  --text: #f3f1ea;
  --text-dim: #9aa1b0;
  --accent: #e8b94d;
  --accent-ink: #1a1406;
  --accent-2: #3fa9a0;
  --line: #262b36;
  --danger: #e2635a;
  --success: #4caf7d;
  --radius: 10px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --font-display: "Bebas Neue", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

[data-theme="light"] {
  --bg: #f7f6f2;
  --bg-alt: #efede6;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f3ec;
  --text: #14171d;
  --text-dim: #5b6270;
  --accent: #b9791a;
  --accent-ink: #fff9ec;
  --accent-2: #1d7a72;
  --line: #dedbd1;
  --danger: #c0392b;
  --success: #2e7d55;
  --shadow: 0 12px 28px rgba(20, 20, 15, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

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

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Timecode ruler (signature element) ---------- */
.ruler {
  --tick-color: var(--line);
  height: 28px;
  width: 100%;
  background-image: repeating-linear-gradient(
    to right,
    var(--tick-color) 0,
    var(--tick-color) 1px,
    transparent 1px,
    transparent 48px
  );
  background-position: 0 100%;
  background-size: 100% 10px;
  background-repeat: repeat-x;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.ruler::after {
  content: "00:00:00:00   00:00:05:00   00:00:10:00   00:00:15:00   00:00:20:00   00:00:25:00   00:00:30:00   00:00:35:00";
  position: absolute;
  top: -2px;
  left: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 4px;
  color: var(--text-dim);
  opacity: 0.55;
  white-space: nowrap;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 24px;
  background: var(--accent);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-ink);
  letter-spacing: 0.5px;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.5px;
  color: var(--text);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  border-left: 1px solid var(--line);
  padding-left: 8px;
  display: none;
}

@media (min-width: 640px) {
  .brand-tag {
    display: inline;
  }
}

.main-nav {
  display: none;
  align-items: center;
  gap: 22px;
  font-size: 14.5px;
}

@media (min-width: 900px) {
  .main-nav {
    display: flex;
  }
}

.main-nav a {
  text-decoration: none;
  color: var(--text-dim);
  position: relative;
  padding: 4px 0;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.live-clock {
  display: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
  white-space: nowrap;
}

@media (min-width: 760px) {
  .live-clock {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
}

.live-clock .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--success) 25%, transparent);
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.icon-btn:hover {
  background: var(--bg-card-hover);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .moon {
  display: none;
}
[data-theme="light"] .theme-toggle .sun {
  display: none;
}
[data-theme="light"] .theme-toggle .moon {
  display: inline;
}

.nav-toggle {
  display: inline-flex;
}
@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }
}

.mobile-nav {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--line);
  padding: 12px 0;
}
.mobile-nav.open {
  display: flex;
}
.mobile-nav a {
  padding: 10px 0;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.mobile-nav a:last-child {
  border-bottom: none;
}

@media (min-width: 900px) {
  .mobile-nav {
    display: none !important;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 14px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1.02;
  letter-spacing: 0.5px;
  margin: 0 0 18px;
  max-width: 15ch;
}

.subtitle-bar {
  display: inline;
  background: #000;
  color: var(--accent);
  padding: 2px 10px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.hero p.lede {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 60ch;
  margin: 0 0 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
  font-family: var(--font-body);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover {
  background: var(--bg-card);
}

.btn-block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- Sections ---------- */
section {
  padding: 64px 0;
}

.section-head {
  max-width: 62ch;
  margin-bottom: 36px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 10px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.3px;
  margin: 0 0 12px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 16.5px;
  margin: 0;
}

.divider-ruler {
  margin: 0;
}

/* ---------- Tool cards grid ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 760px) {
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.tool-card .tc-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-2);
  letter-spacing: 1px;
}

.tool-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.3px;
  margin: 0;
}

.tool-card p {
  color: var(--text-dim);
  font-size: 14.5px;
  margin: 0;
  flex-grow: 1;
}

.tool-card .tc-cta {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
}

/* ---------- Steps (timecode-marker list) ---------- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 760px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    border-top: none;
  }
}

.step {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 760px) {
  .step {
    padding: 0 22px;
    border-bottom: none;
    border-right: 1px solid var(--line);
  }
  .step:last-child {
    border-right: none;
  }
}

.step-time {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
}

.step h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.step p {
  color: var(--text-dim);
  font-size: 14.5px;
  margin: 0;
}

/* ---------- Tool page layout ---------- */
.tool-page-hero {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--line);
}

.tool-page-hero .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-2);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.tool-page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 46px);
  margin: 0 0 14px;
  letter-spacing: 0.3px;
}

.tool-page-hero p {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 65ch;
  margin: 0;
}

.tool-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-top: -1px;
}

.tool-grid-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: -34px;
  padding-bottom: 8px;
}

@media (min-width: 900px) {
  .tool-grid-layout {
    grid-template-columns: 1.3fr 1fr;
    align-items: start;
  }
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  background: var(--bg-alt);
}

.dropzone.dragover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-alt));
}

.dropzone.has-file {
  border-style: solid;
  border-color: var(--accent-2);
}

.dropzone-icon {
  width: 34px;
  height: 34px;
  margin: 0 auto 12px;
  color: var(--text-dim);
}

.dropzone strong {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
}

.dropzone span {
  font-size: 13px;
  color: var(--text-dim);
}

.dropzone input[type="file"] {
  display: none;
}

.file-chip {
  display: none;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 12px;
  margin-top: 14px;
}

.file-chip.show {
  display: inline-flex;
}

/* Form fields */
.field {
  margin-top: 20px;
}

.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 8px;
}

.field .hint {
  font-size: 12.5px;
  color: var(--text-dim);
  font-weight: 400;
  margin-top: 6px;
}

.field input[type="number"],
.field input[type="text"],
.field select {
  width: 100%;
  padding: 11px 12px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 14.5px;
}

.offset-row {
  display: flex;
  gap: 10px;
}
.offset-row .field {
  flex: 1;
  margin-top: 0;
}

.segmented {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
}
.segmented button {
  border: none;
  background: var(--bg);
  color: var(--text-dim);
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  cursor: pointer;
}
.segmented button.active {
  background: var(--accent);
  color: var(--accent-ink);
}

.format-pick {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
@media (min-width: 480px) {
  .format-pick {
    grid-template-columns: repeat(4, 1fr);
  }
}
.format-pick label {
  border: 1px solid var(--line);
  border-radius: 7px;
  text-align: center;
  padding: 12px 6px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
}
.format-pick input {
  display: none;
}
.format-pick input:checked + span {
  color: var(--accent-ink);
}
.format-pick label:has(input:checked) {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.status-msg {
  margin-top: 16px;
  font-size: 13.5px;
  padding: 12px 14px;
  border-radius: 7px;
  display: none;
}
.status-msg.show {
  display: block;
}
.status-msg.error {
  background: color-mix(in srgb, var(--danger) 14%, transparent);
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
}
.status-msg.success {
  background: color-mix(in srgb, var(--success) 14%, transparent);
  color: var(--success);
  border: 1px solid color-mix(in srgb, var(--success) 35%, transparent);
}

.side-panel h4 {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.3px;
  margin: 0 0 12px;
}

.side-panel ul {
  padding-left: 18px;
  margin: 0 0 22px;
  color: var(--text-dim);
  font-size: 14px;
}
.side-panel li {
  margin-bottom: 8px;
}

.side-panel .mini-note {
  font-size: 12.5px;
  color: var(--text-dim);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 8px;
}

/* ---------- Ad slots ---------- */
.ad-slot {
  border: 1px dashed var(--line);
  border-radius: 8px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 12px;
  font-family: var(--font-mono);
  margin: 32px 0;
  background: var(--bg-alt);
}

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-size: 16.5px;
  font-weight: 600;
  padding: 20px 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: var(--font-body);
}

.faq-q .chevron {
  flex-shrink: 0;
  transition: transform 0.2s ease;
  color: var(--text-dim);
}

.faq-item.open .faq-q .chevron {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.faq-item.open .faq-a {
  max-height: 400px;
}

.faq-a-inner {
  padding-bottom: 20px;
  color: var(--text-dim);
  font-size: 15px;
  max-width: 70ch;
}

/* ---------- Content pages (about/privacy/terms) ---------- */
.prose {
  max-width: 72ch;
}
.prose h2 {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: 0.3px;
  margin: 36px 0 12px;
}
.prose h2:first-child {
  margin-top: 0;
}
.prose p {
  color: var(--text-dim);
  font-size: 15.5px;
  margin: 0 0 16px;
}
.prose ul {
  color: var(--text-dim);
  font-size: 15.5px;
  padding-left: 20px;
}
.prose li {
  margin-bottom: 8px;
}
.prose strong {
  color: var(--text);
}

/* ---------- Contact ---------- */
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  max-width: 520px;
}
.contact-card a.email {
  font-family: var(--font-mono);
  color: var(--accent);
  text-decoration: none;
  font-size: 17px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 30px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 760px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

.footer-brand .brand-name {
  font-size: 22px;
}

.footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 12px;
  max-width: 32ch;
}

.footer-col h5 {
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 14px;
  font-family: var(--font-mono);
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: var(--text);
  font-size: 14.5px;
  margin-bottom: 10px;
  opacity: 0.85;
}
.footer-col a:hover {
  opacity: 1;
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- 404 ---------- */
.error-page {
  padding: 100px 0;
  text-align: center;
}
.error-page .code {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 14px;
  letter-spacing: 3px;
}
.error-page h1 {
  font-family: var(--font-display);
  font-size: 60px;
  margin: 12px 0;
}
.error-page p {
  color: var(--text-dim);
  margin-bottom: 26px;
}

/* ---------- Utility ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

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

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}