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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #f5f6fa;
  color: #222;
  min-height: 100vh;
}

/* --------------------------------------------------------
   Nav
-------------------------------------------------------- */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #2c3e50;
  color: #fff;
  padding: 0.75rem 1.5rem;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  text-decoration: none;
}

.nav-links a {
  color: #ccc;
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  border-bottom: 2px solid #3498db;
  padding-bottom: 2px;
}

/* --------------------------------------------------------
   Layout
-------------------------------------------------------- */
main {
  max-width: 680px;
  margin: 2.5rem auto;
  padding: 0 1rem;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.center-card {
  text-align: center;
}

h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.4rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.75rem; }

p { line-height: 1.6; margin-bottom: 0.75rem; }

/* --------------------------------------------------------
   Buttons
-------------------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s;
}

.btn:hover { opacity: 0.85; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary   { background: #3498db; color: #fff; }
.btn-secondary { background: #95a5a6; color: #fff; }
.btn-record    { background: #e74c3c; color: #fff; }
.btn-stop      { background: #e67e22; color: #fff; }

.mode-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

/* --------------------------------------------------------
   Forms
-------------------------------------------------------- */
.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 1rem;
}

.form-row label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: #555;
}

.form-row input,
.form-row select {
  padding: 0.5rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-row input:focus,
.form-row select:focus {
  border-color: #3498db;
}

.mode-radio {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mode-radio label {
  font-size: 0.9rem;
  font-weight: 400;
  color: #222;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

.mode-radio input[type="radio"] {
  margin: 0;
}

.save-folder-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.save-folder-control .btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.privacy-tools {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: #666;
}

.folder-hint {
  background: #eef5fb;
  border-left: 3px solid #3498db;
  border-radius: 4px;
  padding: 0.6rem 0.85rem;
  margin: 0.5rem 0;
  font-size: 0.85rem;
  color: #2c3e50;
  line-height: 1.45;
}

.folder-hint code {
  background: #d8e8f5;
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  font-size: 0.85em;
}

.recovery-banner {
  background: #fff8e1;
  border: 1px solid #f0b200;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin: 0.75rem 0;
  font-size: 0.9rem;
}

.recovery-banner-text {
  margin: 0 0 0.5rem;
  color: #6d4a00;
}

.recovery-banner-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.recovery-banner-actions .btn {
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
}

.btn-link {
  background: none;
  border: none;
  padding: 0;
  color: #3498db;
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
}

.btn-link:hover { color: #2980b9; }

.clear-status {
  color: #27ae60;
  font-weight: 600;
  margin-left: 0.35rem;
}

/* Small, always-visible return-home control (visible even in fullscreen). */
.home-fab {
  position: fixed;
  top: 3.5rem;
  left: 1rem;
  z-index: 9999;
  background: rgba(255, 255, 255, 0.92);
  color: #2c3e50;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: opacity 0.15s ease, background 0.15s ease;
}

.home-fab:hover {
  background: #fff;
  opacity: 1;
}

/* In fullscreen, fade the button so it doesn't distract but stays reachable. */
:fullscreen .home-fab,
:-webkit-full-screen .home-fab {
  opacity: 0.25;
}

:fullscreen .home-fab:hover,
:-webkit-full-screen .home-fab:hover {
  opacity: 1;
}

.recording-toolbar {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.recording-toolbar .btn {
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
}

/* Fullscreen mode — distraction-free view for users with brain injuries
   or visual challenges. Only the word is shown on a plain background. */
:fullscreen,
:-webkit-full-screen {
  background: #fff;
}

:fullscreen nav,
:-webkit-full-screen nav {
  display: none;
}

:fullscreen main,
:-webkit-full-screen main {
  max-width: none;
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
}

:fullscreen .card,
:-webkit-full-screen .card {
  background: #fff;
  box-shadow: none;
  border-radius: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
}

/* Hide everything inside the card except the recording section itself. */
:fullscreen .card > *:not(#recording-section),
:-webkit-full-screen .card > *:not(#recording-section) {
  display: none;
}

/* Hide everything inside recording-section except the word itself. */
:fullscreen #recording-section > *,
:-webkit-full-screen #recording-section > * {
  display: none;
}

:fullscreen #recording-section,
:-webkit-full-screen #recording-section {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

:fullscreen #recording-section .word-display,
:-webkit-full-screen #recording-section .word-display {
  display: block;
  font-size: clamp(8rem, 22vw, 20rem);
  margin: 0;
  min-height: 0;
  line-height: 1.1;
  text-align: center;
}

.shortcut-hint {
  text-align: center;
  font-size: 0.82rem;
  color: #888;
  margin-top: 0.5rem;
}

.mode-instruction {
  text-align: center;
  font-size: 0.95rem;
  color: #555;
  margin: 0.25rem 0 1rem;
  min-height: 1.4em;
}

.shortcut-hint kbd {
  font-family: inherit;
  font-size: 0.78rem;
  background: #eee;
  border: 1px solid #ccc;
  border-radius: 3px;
  padding: 0 0.3rem;
  color: #333;
}

/* --------------------------------------------------------
   Recording mode
-------------------------------------------------------- */
.session-label {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0.25rem;
}

.progress-label {
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 1.25rem;
}

.word-display {
  font-size: 3rem;
  font-weight: 700;
  text-align: center;
  color: #2c3e50;
  margin: 1.5rem 0;
  letter-spacing: 0.05em;
  min-height: 4rem;
}

.recorder-controls {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.25rem;
}

#review-section {
  margin-top: 1rem;
  text-align: center;
}

#review-section audio {
  display: block;
  margin: 0 auto 1rem;
  width: 100%;
}

.review-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.done-box {
  text-align: center;
  padding: 1rem 0;
}

.done-box h3 { color: #27ae60; margin-bottom: 0.5rem; }
.done-box p  { margin-bottom: 0.5rem; }
.done-box code { background: #eee; padding: 0.2em 0.5em; border-radius: 4px; font-size: 0.9rem; }

#rest-section .done-box h3 { color: #e67e22; }

/* --------------------------------------------------------
   Transcription mode
-------------------------------------------------------- */
.audio-block {
  margin: 1rem 0;
}

.file-name-label {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 0.5rem;
}

#audio-player {
  width: 100%;
  margin-bottom: 0.5rem;
}

.nav-buttons {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin: 1rem 0;
}

.nav-right {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: stretch;
}

.score-box {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #2c3e50;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

th, td {
  padding: 0.5rem 0.75rem;
  border: 1px solid #ddd;
  text-align: left;
}

th { background: #f0f0f0; font-weight: 600; }
tr:nth-child(even) td { background: #fafafa; }

td.correct-1 { color: #27ae60; font-weight: 700; }
td.correct-0 { color: #e74c3c; font-weight: 700; }

.score-toggle {
  border: 1px solid currentColor;
  background: transparent;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.85rem;
}
.score-toggle.correct-1 { color: #27ae60; }
.score-toggle.correct-0 { color: #e74c3c; }
.score-toggle:hover { background: rgba(0, 0, 0, 0.05); }

.transcribe-actions,
.results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  align-items: center;
}

.override-hint {
  font-size: 0.85rem;
  color: #666;
  margin: 0.75rem 0 0.5rem;
  text-align: center;
}

.csv-note {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 1rem;
}

.csv-note code {
  background: #eee;
  padding: 0.1em 0.4em;
  border-radius: 4px;
  word-break: break-all;
}

/* --------------------------------------------------------
   Acknowledgments
-------------------------------------------------------- */
.acknowledgments {
  margin-top: 1.5rem;
  text-align: left;
}

.acknowledgments h2 {
  border-bottom: 2px solid #e0e0e0;
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}

.acknowledgments h3 {
  margin-top: 1rem;
  color: #2c3e50;
  font-size: 1rem;
}

.citation-list {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.citation-list li {
  margin-bottom: 0.5rem;
  font-size: 0.92rem;
  line-height: 1.6;
}

.citation-list a {
  color: #3498db;
  text-decoration: none;
}

.citation-list a:hover { text-decoration: underline; }

.ack-divider {
  border: none;
  border-top: 1px solid #e0e0e0;
  margin: 1.25rem 0 1rem;
}

.app-credit {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 0;
}

/* --------------------------------------------------------
   Utility
-------------------------------------------------------- */
.hidden  { display: none !important; }

.fallback-file-label {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: #555;
  cursor: pointer;
}

.error {
  color: #e74c3c;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.status-msg {
  font-size: 0.9rem;
  color: #27ae60;
  margin-top: 0.5rem;
  min-height: 1.2em;
}

.info-msg {
  color: #888;
}