/* ==========================================================================
   SpeakLoop — Speaking Instrument
   A friendly, task-first practice tool for engineers in global teams.
   ========================================================================== */

:root {
  color-scheme: dark;

  --canvas: #0e1116;
  --surface: #171b22;
  --surface-raised: #20252e;
  --surface-soft: #12161c;
  --control: #11151b;

  --text: #f7f5f2;
  --text-secondary: #c0c5cc;
  --text-muted: #929aa5;

  --line: #303641;
  --line-strong: #48505d;

  --accent: #ff6b43;
  --accent-hover: #ff805f;
  --accent-soft: #321d19;
  --on-accent: #230801;

  --success: #78dba8;
  --success-soft: #152b22;
  --danger: #ff8580;
  --danger-soft: #331b1d;

  --max: 1180px;
  --radius: 12px;
  --radius-control: 9px;
  --z-sticky: 20;

  --font-sans: Inter, "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  font-family: var(--font-sans);
  font-synthesis-weight: none;
}

/* Base ------------------------------------------------------------------- */

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--canvas);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.page-shell {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

main {
  display: block;
  min-height: calc(100vh - 190px);
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; color: inherit; }
button, select { cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

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

h1, h2, h3, p, ul, ol { margin-top: 0; }

h1, h2, h3 {
  color: var(--text);
  line-height: 1.12;
  text-wrap: balance;
}

h1 {
  margin-bottom: 18px;
  font-size: 2.75rem;
  font-weight: 720;
  letter-spacing: -.035em;
}

h2 {
  font-size: 1.65rem;
  font-weight: 680;
  letter-spacing: -.025em;
}

h3 {
  font-size: 1.08rem;
  font-weight: 680;
  letter-spacing: -.015em;
}

.muted { color: var(--text-secondary); }
.hidden { display: none !important; }
.stop { color: inherit; }

/* Header ----------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  border-bottom: 1px solid var(--line);
  background: rgba(14, 17, 22, .96);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent);
}

.brand-mark i {
  display: block;
  width: 3px;
  border-radius: 2px;
  background: var(--on-accent);
}

.brand-mark i:nth-child(1) { height: 8px; }
.brand-mark i:nth-child(2) { height: 18px; }
.brand-mark i:nth-child(3) { height: 13px; }
.brand-mark i:nth-child(4) { height: 21px; }

.brand-name strong,
.brand-name small {
  display: block;
  line-height: 1.12;
}

.brand-name strong {
  font-size: .98rem;
  font-weight: 720;
  letter-spacing: -.015em;
}

.brand-name small {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: .68rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  padding: 8px 13px;
  border-radius: var(--radius-control);
  color: var(--text-secondary);
  font-size: .88rem;
  font-weight: 620;
  transition: background .18s ease, color .18s ease;
}

.main-nav a:hover {
  background: var(--surface);
  color: var(--text);
}

.main-nav a[aria-current="page"] {
  background: var(--surface-raised);
  color: var(--text);
}

/* Shared controls -------------------------------------------------------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text);
  font-size: .88rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

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

.button.primary {
  background: var(--accent);
  color: var(--on-accent);
}

.button.primary:hover { background: var(--accent-hover); }

.button.ghost {
  border-color: var(--line-strong);
  color: var(--text);
}

.button.ghost:hover {
  border-color: var(--text-muted);
  background: var(--surface-raised);
}

.button.danger {
  border-color: #6b383b;
  color: var(--danger);
}

.button.danger:hover { background: var(--danger-soft); }

.button:disabled {
  opacity: .42;
  cursor: not-allowed;
  transform: none;
}

.button.primary:disabled:hover { background: var(--accent); }

.text-button {
  border: 0;
  padding: 5px;
  background: transparent;
  color: var(--text-secondary);
  font-size: .82rem;
  font-weight: 650;
}

.text-button:hover { color: var(--accent); }

label {
  display: grid;
  gap: 7px;
  color: var(--text-secondary);
  font-size: .8rem;
  font-weight: 650;
}

input,
select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--control);
  color: var(--text);
  font-size: .9rem;
  transition: border-color .18s ease, background .18s ease;
}

input::placeholder { color: var(--text-muted); }
input:hover, select:hover { border-color: var(--line-strong); }
input:focus, select:focus { border-color: var(--accent); }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--surface-raised);
  color: var(--text-secondary);
  font-size: .78rem;
  line-height: 1.3;
}

/* Home ------------------------------------------------------------------- */

.hero {
  margin-top: 28px;
  padding: 38px;
  border-radius: var(--radius);
  background: var(--surface);
}

.hero-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 245px;
  align-items: stretch;
  gap: 40px;
}

.hero-head > div:first-child {
  align-self: center;
  padding: 10px 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: .86rem;
  font-weight: 720;
}

.hero h1 { max-width: 17ch; }

.hero-copy {
  max-width: 58ch;
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: 1.02rem;
  text-wrap: pretty;
}

.hero-actions,
.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 26px;
}

.hero-stamp {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 210px;
  padding: 22px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
}

.hero-stamp .stamp-date {
  font-size: .8rem;
  font-weight: 720;
}

.hero-stamp strong {
  font-size: 1.42rem;
  line-height: 1.12;
  letter-spacing: -.025em;
}

.hero-stamp > span:last-child {
  color: #4b170c;
  font-size: .82rem;
  font-weight: 650;
}

.waveform {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 42px;
}

.waveform i {
  width: 5px;
  border-radius: 3px;
  background: var(--on-accent);
}

.waveform i:nth-child(1) { height: 9px; }
.waveform i:nth-child(2) { height: 18px; }
.waveform i:nth-child(3) { height: 31px; }
.waveform i:nth-child(4) { height: 38px; }
.waveform i:nth-child(5) { height: 27px; }
.waveform i:nth-child(6) { height: 15px; }
.waveform i:nth-child(7) { height: 8px; }

.loop-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 34px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.loop-step {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr;
  column-gap: 10px;
  align-items: center;
  padding-right: 18px;
}

.loop-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 14px;
  right: 12px;
  width: 16px;
  height: 1px;
  background: var(--line-strong);
}

.step-index {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface-raised);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: .74rem;
  font-variant-numeric: tabular-nums;
}

.loop-step.active .step-index {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 750;
}

.step-name {
  display: block;
  font-size: .9rem;
  font-weight: 680;
}

.step-note {
  grid-column: 2;
  display: block;
  margin-top: 2px;
  color: var(--text-muted);
  font-size: .75rem;
}

.section-marker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 52px;
}

.marker-label {
  font-size: 1.05rem;
  font-weight: 720;
  letter-spacing: -.015em;
}

.marker-aside {
  color: var(--accent);
  font-size: .84rem;
  font-weight: 680;
}

.marker-aside::after { content: "  →"; }
.marker-aside:hover { color: var(--accent-hover); }

.section-title {
  max-width: 28ch;
  margin: 12px 0 18px;
  font-size: 1.65rem;
}

.feature-card {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 24px;
  min-height: 200px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--surface);
}

.feature-rail {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 4px 22px 4px 0;
  border-right: 1px solid var(--line);
}

.rail-item {
  color: var(--text-muted);
  font-size: .78rem;
}

.rail-item:first-child {
  color: var(--text);
  font-weight: 680;
}

.feature-lede {
  max-width: 65ch;
  margin-bottom: 0;
  color: var(--text-secondary);
}

.field-label {
  margin: 22px 0 9px;
  color: var(--text-muted);
  font-size: .78rem;
  font-weight: 650;
}

.feature-card .hero-actions { margin-top: 22px; }

.figures {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 14px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.figure {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 21px 22px;
}

.figure + .figure { border-left: 1px solid var(--line); }

.figure-value {
  min-width: 44px;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 650;
  line-height: 1;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
}

.figure-label,
.figure-note { display: block; }

.figure-label {
  color: var(--text);
  font-size: .86rem;
  font-weight: 650;
}

.figure-note {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: .74rem;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 18px;
}

.value-grid article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.icon-badge {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 700;
}

.value-grid h3 { margin-bottom: 9px; }

.value-grid p {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: .9rem;
  text-wrap: pretty;
}

/* Page introductions and library ---------------------------------------- */

.page-intro {
  max-width: 760px;
  padding: 58px 0 32px;
}

.page-intro h1 {
  max-width: 20ch;
  font-size: 2.5rem;
}

.page-intro > p:not(.eyebrow) {
  max-width: 62ch;
  margin-bottom: 0;
  color: var(--text-secondary);
}

.page-intro .button { margin-top: 24px; }

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  align-items: end;
  gap: 12px;
  margin-bottom: 10px;
  padding: 15px;
  border-radius: var(--radius);
  background: var(--surface);
}

.brief-grid {
  display: grid;
  gap: 2px;
  margin: 0 0 40px;
}

.brief-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 110px;
  grid-template-rows: auto auto auto;
  column-gap: 24px;
  padding: 22px 16px;
  border-bottom: 1px solid var(--line);
  border-radius: 10px;
  transition: background .18s ease;
}

.brief-card:hover { background: var(--surface); }

.brief-meta,
.feature-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: var(--text-muted);
  font-size: .76rem;
}

.brief-meta {
  grid-column: 1;
  grid-row: 1 / span 3;
  align-content: start;
}

.brief-meta span { width: 100%; }

.brief-card h2 {
  grid-column: 2;
  grid-row: 1;
  margin-bottom: 8px;
  font-size: 1.13rem;
}

.brief-card p {
  grid-column: 2;
  grid-row: 2;
  max-width: 68ch;
  margin-bottom: 13px;
  color: var(--text-secondary);
  font-size: .88rem;
}

.brief-card .chips {
  grid-column: 2;
  grid-row: 3;
}

.brief-card .card-cta {
  grid-column: 3;
  grid-row: 1 / span 3;
  align-self: center;
  justify-self: end;
  color: var(--accent);
  font-size: .82rem;
  font-weight: 680;
}

/* Brief detail ----------------------------------------------------------- */

.brief-detail {
  max-width: 960px;
  margin: 0 auto;
  padding: 52px 0 30px;
}

.brief-detail > h1 {
  max-width: 22ch;
  margin-bottom: 14px;
  font-size: 2.5rem;
}

.brief-detail > .feature-meta { margin-bottom: 18px; }

.brief-detail > .hero-copy {
  max-width: 68ch;
  font-size: 1rem;
}

.brief-section {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 24px;
  margin-top: 12px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--surface);
}

.brief-section:first-of-type { margin-top: 38px; }

.brief-section > .eyebrow {
  margin: 3px 0 0;
  color: var(--text-secondary);
}

.brief-section h2 {
  max-width: 28ch;
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.brief-section p {
  max-width: 65ch;
  color: var(--text-secondary);
}

.brief-section p:last-child { margin-bottom: 0; }

.brief-section ol {
  margin: 0;
  padding-left: 20px;
  color: var(--text-secondary);
}

.brief-section li + li { margin-top: 8px; }

blockquote {
  margin: 0;
  padding: 20px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 1.2rem;
  font-weight: 720;
  line-height: 1.4;
  letter-spacing: -.015em;
}

.expression-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.expression-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--text-secondary);
}

.expression-list li:last-child { border-bottom: 0; }

.expression-list li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border: 2px solid var(--accent);
  border-radius: 3px;
}

/* Speaking workspace ----------------------------------------------------- */

.practice-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 44px 0 22px;
}

.practice-header h1 {
  max-width: 25ch;
  margin-bottom: 8px;
  font-size: 2rem;
}

.practice-header .muted {
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: .8rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: .78rem;
  font-weight: 650;
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}

.status-pill.live::before,
.status-pill.listening::before,
.status-pill.thinking::before {
  background: var(--success);
  animation: status-pulse 1.4s ease-in-out infinite;
}

.status-pill.error {
  background: var(--danger-soft);
  color: var(--danger);
}

.status-pill.error::before { background: var(--danger); }

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.practice-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 40px;
}

.practice-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel {
  padding: 20px;
  border-radius: var(--radius);
  background: var(--surface);
}

.panel h2 {
  margin: 0 0 15px;
  font-size: .92rem;
}

.panel label + label { margin-top: 15px; }

.microcopy {
  margin: 13px 0 0;
  color: var(--text-muted);
  font-size: .73rem;
  line-height: 1.55;
}

.target-list { display: grid; gap: 6px; }

.target-chip {
  display: grid;
  grid-template-columns: 1fr 18px;
  gap: 10px;
  align-items: start;
  padding: 10px 11px;
  border-radius: 8px;
  background: var(--surface-raised);
  color: var(--text-secondary);
  font-size: .82rem;
  transition: background .18s ease, color .18s ease;
}

.target-chip span:last-child {
  color: var(--text-muted);
  text-align: right;
}

.target-chip.used {
  background: var(--success-soft);
  color: var(--text);
}

.target-chip.used span:last-child { color: var(--success); }

.conversation-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 650px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
}

.session-controls {
  display: flex;
  align-items: center;
  gap: 9px;
}

.session-timer {
  margin-left: auto;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.voice-stage {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 20px;
  flex: 1;
  min-height: 245px;
  padding: 36px 0;
  text-align: center;
}

.voice-stage p {
  max-width: 48ch;
  margin: 0;
  color: var(--text-secondary);
  font-size: .9rem;
}

.voice-wave {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 150px;
  height: 82px;
  border-radius: 12px;
  background: var(--surface-raised);
}

.voice-wave i {
  width: 5px;
  border-radius: 3px;
  background: var(--text-muted);
  transition: background .2s ease;
}

.voice-wave i:nth-child(1),
.voice-wave i:nth-child(7) { height: 12px; }
.voice-wave i:nth-child(2),
.voice-wave i:nth-child(6) { height: 22px; }
.voice-wave i:nth-child(3),
.voice-wave i:nth-child(5) { height: 34px; }
.voice-wave i:nth-child(4) { height: 48px; }

.voice-wave.active i {
  background: var(--accent);
  animation: speak-level 1.05s ease-in-out infinite;
}

.voice-wave.active i:nth-child(2) { animation-delay: .08s; }
.voice-wave.active i:nth-child(3) { animation-delay: .16s; }
.voice-wave.active i:nth-child(4) { animation-delay: .24s; }
.voice-wave.active i:nth-child(5) { animation-delay: .32s; }
.voice-wave.active i:nth-child(6) { animation-delay: .4s; }
.voice-wave.active i:nth-child(7) { animation-delay: .48s; }

@keyframes speak-level {
  0%, 100% { transform: scaleY(.35); }
  50% { transform: scaleY(1); }
}

.transcript-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 19px;
  border-top: 1px solid var(--line);
}

.transcript-heading h2 {
  margin: 0;
  font-size: .95rem;
}

.transcript {
  display: grid;
  align-content: start;
  max-height: 330px;
  overflow: auto;
  margin-top: 8px;
}

.transcript-turn {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.transcript-turn strong {
  color: var(--text-muted);
  font-size: .72rem;
  line-height: 1.9;
}

.transcript-turn.user strong { color: var(--accent); }
.transcript-turn span { color: var(--text-secondary); }
.transcript-turn.user span { color: var(--text); }

.empty-state {
  padding: 32px 16px;
  color: var(--text-muted);
  font-size: .88rem;
  text-align: center;
}

/* Feedback --------------------------------------------------------------- */

.feedback-section { margin: 28px 0 40px; }

.score-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
  margin-top: 18px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--canvas);
}

.score-card {
  padding: 18px;
  background: var(--surface);
}

.score-label {
  display: block;
  min-height: 34px;
  color: var(--text-secondary);
  font-size: .75rem;
}

.score-card strong {
  display: block;
  margin: 8px 0 12px;
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 650;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.score-meter {
  display: block;
  height: 4px;
  border-radius: 3px;
  overflow: hidden;
  background: var(--line);
}

.score-meter i {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .7s cubic-bezier(.22, 1, .36, 1);
}

.feedback-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.feedback-card {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
}

.feedback-card.full { grid-column: 1 / -1; }

.feedback-card h3 {
  margin: 0 0 14px;
  font-size: .9rem;
}

.feedback-card p { color: var(--text-secondary); }
.feedback-card > p:last-child { margin-bottom: 0; }

.feedback-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feedback-card ul li {
  position: relative;
  padding: 9px 0 9px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--text-secondary);
  font-size: .9rem;
}

.feedback-card ul li:last-child { border-bottom: 0; }

.feedback-card ul li::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.rewrite-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.rewrite-item:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.rewrite-line {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 14px;
  margin: 0 0 9px;
}

.rewrite-line strong {
  color: var(--text-muted);
  font-size: .74rem;
  line-height: 1.8;
}

.rewrite-line span { color: var(--text); }

.rewrite-line.original span {
  color: var(--text-muted);
  text-decoration: line-through;
  text-decoration-color: var(--danger);
}

.rewrite-note {
  margin: 10px 0 0 106px;
  color: var(--text-muted);
  font-size: .84rem;
}

/* Review ----------------------------------------------------------------- */

.review-app {
  max-width: 840px;
  margin-bottom: 40px;
}

.review-card {
  padding: 30px;
  border-radius: var(--radius);
  background: var(--surface);
}

.review-card h2 {
  max-width: 30ch;
  margin: 16px 0 24px;
  font-size: 1.65rem;
}

.review-prompt {
  max-width: 68ch;
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  background: var(--control);
  color: var(--text-secondary);
  font-size: .9rem;
}

.review-card > .muted { max-width: 62ch; }

.review-answer {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.review-answer .eyebrow { margin-bottom: 10px; }
.review-answer blockquote { margin-bottom: 15px; }

/* States ----------------------------------------------------------------- */

.loading-card {
  position: relative;
  overflow: hidden;
}

.loading-card::before,
.loading-card::after {
  content: "";
  position: absolute;
  left: 24px;
  height: 13px;
  border-radius: 5px;
  background: var(--surface-raised);
  animation: loading-pulse 1.1s ease-in-out infinite alternate;
}

.loading-card::before {
  top: 54px;
  width: min(58%, 460px);
}

.loading-card::after {
  top: 80px;
  width: min(38%, 300px);
  animation-delay: .18s;
}

@keyframes loading-pulse {
  from { opacity: .45; }
  to { opacity: 1; }
}

.error-box {
  padding: 16px 18px;
  border: 1px solid #6b383b;
  border-radius: var(--radius-control);
  background: var(--danger-soft);
  color: #ffd4d1;
  font-size: .88rem;
}

/* Footer ----------------------------------------------------------------- */

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 76px;
  padding: 25px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: .76rem;
}

.site-footer p { margin: 0; }
.site-footer .footer-lede { color: var(--text-secondary); }

/* Responsive ------------------------------------------------------------- */

@media (max-width: 960px) {
  .hero-head { grid-template-columns: minmax(0, 1fr) 220px; gap: 26px; }
  .loop-rail { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .loop-step:nth-child(2)::after { display: none; }
  .practice-layout { grid-template-columns: 1fr; }
  .practice-sidebar { display: grid; grid-template-columns: 1fr 1fr; }
  .brief-card { grid-template-columns: 125px minmax(0, 1fr) 100px; gap: 18px; }
  .score-grid { grid-template-columns: repeat(3, 1fr); }
  .value-grid { gap: 18px; }
}

@media (max-width: 720px) {
  .page-shell { width: min(100% - 28px, var(--max)); }

  .site-header {
    position: static;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 14px 0 10px;
  }

  .main-nav { justify-content: space-between; }
  .main-nav a { flex: 1; text-align: center; }

  h1 { font-size: 2.1rem; }

  .hero {
    margin-top: 18px;
    padding: 22px;
  }

  .hero-head { grid-template-columns: 1fr; }
  .hero-stamp { min-height: 170px; }

  .loop-rail { grid-template-columns: 1fr; }
  .loop-step:not(:last-child)::after { display: none; }
  .step-note { margin-bottom: 4px; }

  .section-marker { margin-top: 40px; }
  .section-title { font-size: 1.4rem; }

  .feature-card { grid-template-columns: 1fr; }

  .feature-rail {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0 0 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .figures { grid-template-columns: 1fr; }
  .figure + .figure { border-top: 1px solid var(--line); border-left: 0; }
  .value-grid { grid-template-columns: 1fr; }
  .icon-badge { margin-bottom: 16px; }

  .page-intro { padding: 42px 0 25px; }
  .page-intro h1, .brief-detail > h1 { font-size: 2rem; }
  .toolbar { grid-template-columns: 1fr; }

  .brief-card {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 0;
    padding: 20px 10px;
  }

  .brief-meta,
  .brief-card h2,
  .brief-card p,
  .brief-card .chips,
  .brief-card .card-cta {
    grid-column: 1;
    grid-row: auto;
  }

  .brief-meta { margin-bottom: 11px; }
  .brief-meta span { width: auto; }
  .brief-card .card-cta { justify-self: start; margin-top: 15px; }

  .brief-detail { padding-top: 40px; }
  .brief-section { grid-template-columns: 1fr; gap: 14px; padding: 20px; }

  .practice-header {
    align-items: flex-start;
    padding-top: 36px;
  }

  .practice-header h1 { font-size: 1.6rem; }
  .practice-sidebar { grid-template-columns: 1fr; }
  .conversation-panel { min-height: 580px; padding: 18px; }
  .session-controls { flex-wrap: wrap; }
  .session-timer { width: 100%; margin: 4px 0 0; }

  .score-grid,
  .feedback-grid { grid-template-columns: 1fr; }

  .feedback-card.full { grid-column: auto; }
  .rewrite-line { grid-template-columns: 1fr; gap: 2px; }
  .rewrite-note { margin-left: 0; }
  .review-card { padding: 22px; }

  .site-footer {
    flex-direction: column;
    gap: 6px;
    margin-top: 56px;
  }
}

@media (max-width: 460px) {
  .brand-name small { display: none; }
  .hero-actions .button,
  .review-actions .button { width: 100%; }
  .practice-header { flex-direction: column; }
  .transcript-turn { grid-template-columns: 54px 1fr; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }

  html { scroll-behavior: auto; }
}