:root {
  --paper: #fffdf6;
  --paper-rgb: 255, 253, 246;
  --ink: #2b2b28;
  --muted: #6d6658;
  --line: #ddd5c4;
  --line-rgb: 221, 213, 196;
  --accent: #124559;
  --accent-soft: #d7e8eb;
  --warm: #cc5a2b;
  --canvas-paper: #fffdf6;
  --reference-curve: #000000;
  --sample-curve: #3a5311;
  --live-mic: #cc5a2b;
  --syllable-guide: #80978d;
  --control-bg: rgba(255, 255, 255, 0.88);
  --control-border: var(--line);
  color-scheme: light;
}

body.theme-dark {
  --paper: #1d1d19;
  --paper-rgb: 29, 29, 25;
  --ink: #f3ead6;
  --muted: #c4b79d;
  --line: #6a5a40;
  --line-rgb: 106, 90, 64;
  --accent: #a7d8d0;
  --accent-soft: rgba(167, 216, 208, 0.18);
  --warm: #f0a260;
  --canvas-paper: #17211d;
  --reference-curve: #3f5b56;
  --sample-curve: #c6f06a;
  --live-mic: #f08a53;
  --syllable-guide: #d8ff8f;
  --control-bg: rgba(47, 48, 40, 0.92);
  --control-border: rgba(var(--line-rgb), 0.95);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(243, 210, 165, 0.35), transparent 28%),
    linear-gradient(180deg, #f8f1df 0%, #fffdf6 38%, #f4efe2 100%);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  overflow-anchor: none;
}

body.theme-dark {
  background:
    radial-gradient(circle at top left, rgba(240, 162, 96, 0.18), transparent 30%),
    radial-gradient(circle at 82% 18%, rgba(167, 216, 208, 0.14), transparent 32%),
    linear-gradient(180deg, #14201d 0%, #242118 48%, #121917 100%);
}

.page {
  max-width: 1360px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.hero h1,
.panel h2,
.summary-item h3,
.feedback-section h3 {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.hero {
  display: grid;
  justify-items: center;
  gap: 12px;
  margin-bottom: 18px;
  text-align: center;
}

.session-bar {
  width: min(100%, 900px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 10px 14px;
  border: 1px solid rgba(164, 154, 133, 0.28);
  border-radius: 18px;
  background: rgba(255, 252, 245, 0.74);
  text-align: left;
}

body.theme-dark .session-bar,
body.theme-dark .practice-dock,
body.theme-dark .panel,
body.theme-dark .reference-panel,
body.theme-dark .student-panel,
body.theme-dark .auth-card,
body.theme-dark .account-popover {
  border-color: rgba(var(--line-rgb), 0.74);
  background: rgba(31, 30, 25, 0.86);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

.session-summary {
  display: grid;
  gap: 2px;
  position: relative;
}

.session-email-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.session-label {
  color: var(--muted);
  font: 600 11px/1.2 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.session-icon-btn {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  cursor: pointer;
  font: 600 15px/1 "Avenir Next", "Segoe UI", sans-serif;
}

.account-popover {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  width: min(380px, calc(100vw - 64px));
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(164, 154, 133, 0.34);
  border-radius: 20px;
  background: rgba(255, 252, 245, 0.98);
  box-shadow: 0 18px 42px rgba(67, 74, 84, 0.18);
  z-index: 20;
}

.account-popover[hidden] {
  display: none !important;
}

.account-popover-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.account-popover-head strong {
  font: 700 15px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.account-popover-form {
  gap: 10px;
}

.session-logout {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 9px 12px;
  color: var(--ink);
  cursor: pointer;
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.theme-toggle {
  min-width: 104px;
}

.auth-theme-row {
  display: flex;
  justify-content: flex-end;
}

.hero-brand-frame {
  width: min(100%, 900px);
  border-radius: 28px;
  height: 154px;
  overflow: hidden;
  padding: 0;
  background:
    radial-gradient(circle at 50% 54%, rgba(162, 223, 246, 0.22), transparent 54%),
    linear-gradient(180deg, rgba(255,255,255,0.12) 0%, rgba(247,250,252,0.03) 100%);
  box-shadow: 0 14px 34px rgba(107, 126, 145, 0.06);
}

.hero-brand {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center 47%;
  margin: 0 auto;
  opacity: 0.98;
  mix-blend-mode: multiply;
  filter: saturate(1.06) contrast(1.08) brightness(1.015) blur(0.15px);
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 0, 0, 0.45) 10%,
    rgba(0, 0, 0, 0.88) 22%,
    rgba(0, 0, 0, 1) 32%,
    rgba(0, 0, 0, 1) 68%,
    rgba(0, 0, 0, 0.88) 78%,
    rgba(0, 0, 0, 0.45) 90%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 0, 0, 0.45) 10%,
    rgba(0, 0, 0, 0.88) 22%,
    rgba(0, 0, 0, 1) 32%,
    rgba(0, 0, 0, 1) 68%,
    rgba(0, 0, 0, 0.88) 78%,
    rgba(0, 0, 0, 0.45) 90%,
    transparent 100%
  );
}

.hero-copy {
  max-width: 1040px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--warm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font: 600 12px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.hero h1 {
  font-size: clamp(2rem, 3.4vw, 2.55rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 500;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
}

.lede {
  max-width: 1040px;
  margin: 10px auto 0;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.45;
}

.lede,
.muted {
  color: var(--muted);
}

.server-trace {
  margin-top: 8px;
  border: 1px dashed rgba(18, 69, 89, 0.34);
  border-radius: 14px;
  background: rgba(247, 251, 252, 0.7);
  padding: 8px 10px 10px;
}

.server-trace summary {
  cursor: pointer;
  color: var(--accent);
  font: 600 12px/1.3 "Avenir Next", "Segoe UI", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.server-trace-block {
  margin: 8px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(18, 69, 89, 0.12);
  padding: 10px 12px;
  color: #36424a;
  font: 12px/1.45 Menlo, Consolas, monospace;
}

.controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(220px, 1fr)) minmax(320px, 420px);
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.auth-page {
  width: min(100%, 560px);
}

.auth-card {
  display: grid;
  gap: 20px;
  padding: 24px;
  border: 1px solid rgba(164, 154, 133, 0.28);
  border-radius: 28px;
  background: rgba(255, 252, 245, 0.86);
  box-shadow: 0 18px 42px rgba(107, 126, 145, 0.08);
}

.auth-brand-frame {
  border-radius: 22px;
  overflow: hidden;
  height: 138px;
  background:
    radial-gradient(circle at 50% 54%, rgba(162, 223, 246, 0.22), transparent 54%),
    linear-gradient(180deg, rgba(255,255,255,0.12) 0%, rgba(247,250,252,0.03) 100%);
}

.auth-brand {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center 47%;
  opacity: 0.98;
  mix-blend-mode: multiply;
}

.auth-copy {
  text-align: center;
}

.auth-form {
  display: grid;
  gap: 14px;
}

.auth-form label {
  display: grid;
  gap: 6px;
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
  color: var(--muted);
}

.auth-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  padding: 12px 14px;
  color: var(--ink);
  font: 500 15px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.auth-form button {
  border: 1px solid transparent;
  border-radius: 14px;
  background: var(--accent);
  padding: 12px 16px;
  color: #fffdf6;
  cursor: pointer;
  font: 700 14px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.auth-form button:disabled,
.session-logout:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.auth-status {
  margin: 0;
  min-height: 1.4em;
  text-align: center;
}

.auth-status-neutral {
  color: var(--muted);
}

.auth-status-error {
  color: #8d2d18;
}

.controls label {
  display: grid;
  gap: 6px;
  align-content: start;
  width: 100%;
  max-width: 100%;
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
  color: var(--muted);
}

.saved-cycle-control {
  grid-column: span 2;
  width: 100%;
}

.controls select {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.8);
  padding: 8px 32px 8px 12px;
  color: var(--ink);
  font: 500 15px/1.2 "Avenir Next", "Segoe UI", sans-serif;
  justify-self: start;
}

.practice-dock {
  display: grid;
  grid-column: 4;
  grid-row: 1 / span 2;
  gap: 10px;
  align-self: stretch;
  justify-self: end;
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(164, 154, 133, 0.28);
  border-radius: 20px;
  background: rgba(255, 252, 245, 0.74);
  padding: 12px;
}

.practice-dock-head,
.practice-dock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.practice-dock-row {
  flex-direction: column;
  align-items: stretch;
}

.practice-dock-head strong,
.mini-player span {
  color: var(--muted);
  font: 800 12px/1 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mini-player {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
}

.icon-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.icon-button {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  cursor: pointer;
  font: 800 17px/1 "Avenir Next", "Segoe UI", sans-serif;
}

.icon-button svg {
  width: 20px;
  height: 20px;
  display: block;
  fill: currentColor;
}

.icon-button .stroke-icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.record-toggle {
  min-width: 54px;
  color: var(--warm);
}

.record-toggle.is-recording {
  color: #fffdf6;
  background: var(--warm);
}

.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.compact-student-controls {
  display: flex;
  justify-content: flex-end;
}

.playback-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}

.player-strip {
  padding: 16px 18px;
}

.panel-collapse-head {
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 0;
}

.panel-toggle {
  display: flex;
  align-items: center;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--ink);
  cursor: pointer;
  font: 600 1.17em/1.3 "Avenir Next", "Segoe UI", sans-serif;
}

.panel-toggle::before {
  content: "+";
  display: inline-block;
  width: 18px;
  margin-right: 6px;
  color: var(--warm);
}

.panel-collapsible:not(.is-collapsed) .panel-toggle::before {
  content: "−";
}

.panel-collapse-body[hidden] {
  display: none !important;
}

.panel-collapsible.is-collapsed {
  padding-bottom: 16px;
}

.reference-panel,
.student-panel {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(164, 154, 133, 0.28);
  border-radius: 18px;
  background: rgba(255, 252, 245, 0.74);
}

.reference-panel-head,
.student-panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.student-timer {
  color: var(--ink);
  font: 700 14px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.student-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.student-controls button {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 9px 12px;
  color: var(--ink);
  cursor: pointer;
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.student-controls button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.overall-score-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px;
  width: max-content;
  max-width: 100%;
  border: 1px solid rgba(204, 90, 43, 0.28);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(204, 90, 43, 0.13), rgba(255, 253, 246, 0.88));
  padding: 10px 12px;
}

.overall-score-card[hidden] {
  display: none !important;
}

.overall-score-label {
  color: var(--muted);
  font: 800 11px/1 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#studentOverallScoreValue {
  color: var(--warm);
  font: 900 24px/1 "Avenir Next", "Segoe UI", sans-serif;
}

#studentOverallScoreBand {
  color: var(--ink);
  font: 800 13px/1 "Avenir Next", "Segoe UI", sans-serif;
}

.overall-score-retry {
  border-color: rgba(141, 45, 24, 0.24);
  background: rgba(141, 45, 24, 0.08);
}

.overall-score-retry #studentOverallScoreValue {
  color: #8d2d18;
  font-size: 18px;
}

.student-coach {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(221, 213, 196, 0.7);
  overflow-anchor: none;
}

.student-coach-standalone {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.student-coach-title {
  display: block;
  margin-bottom: 12px;
  font: 700 17px/1.2 "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
}

.student-coach-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.student-coach-meta {
  display: grid;
  gap: 8px;
  min-width: 220px;
}

.student-coach-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 8px;
}

.student-coach-tools label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font: 600 12px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.student-coach-tools select,
.student-coach-tools button {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 9px 12px;
  color: var(--ink);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.student-coach-tools button {
  cursor: pointer;
}

.student-coach-tools button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.student-coach-tools .compact-select select {
  min-width: 160px;
}

.playback-row-student {
  grid-template-columns: 76px minmax(0, 1fr);
}

.student-status {
  margin: 0;
  line-height: 1.45;
}

.student-debug {
  margin: -2px 0 0;
  font: 12px/1.35 "Avenir Next", "Segoe UI", sans-serif;
}

.playback-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.playback-row span {
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.playback-row audio {
  width: 100%;
}

@media (max-width: 980px) {
  .playback-controls {
    grid-template-columns: 1fr;
  }
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(164, 154, 133, 0.28);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 10px 30px rgba(110, 93, 53, 0.08);
}

.panel-large {
  grid-column: span 12;
}

.panel-wide {
  grid-column: span 12;
}

.panel:not(.panel-large):not(.panel-wide) {
  grid-column: span 4;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 12px;
}

.panel-head-stack {
  display: block;
  align-items: start;
}

.overlay-head-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 6px;
}

.mode-note {
  margin: 6px 0 0;
  max-width: 880px;
  line-height: 1.45;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 18px;
  background: var(--paper);
}

.stats {
  display: grid;
  gap: 10px;
  margin: 14px 0 18px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(221, 213, 196, 0.7);
}

.stat-row dt {
  color: var(--muted);
}

.stat-row dd {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  text-align: right;
}

.summary-list {
  display: grid;
  gap: 12px;
}

.summary-item {
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(242, 237, 225, 0.85);
  border: 1px solid transparent;
}

.summary-item.active {
  border-color: rgba(18, 69, 89, 0.35);
  background: var(--accent-soft);
}

.summary-item p {
  margin: 8px 0 0;
  color: var(--muted);
}

.summary-score {
  margin-top: 8px;
}

.score-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  width: max-content;
  border: 1px solid rgba(204, 90, 43, 0.28);
  border-radius: 999px;
  background: rgba(204, 90, 43, 0.11);
  padding: 6px 10px;
  color: var(--warm);
  font: 800 13px/1 "Avenir Next", "Segoe UI", sans-serif;
}

.score-pill small {
  font-size: 10px;
  opacity: 0.78;
}

.score-pill-label {
  color: var(--muted);
  font-weight: 700;
}

.score-pill-retry {
  border-color: rgba(141, 45, 24, 0.24);
  background: rgba(141, 45, 24, 0.08);
  color: #8d2d18;
}

.feedback-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(150px, 190px) auto;
  gap: 10px;
  align-items: end;
}

.feedback-toolbar label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.feedback-toolbar select,
.feedback-toolbar button {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  padding: 10px 14px;
  color: var(--ink);
  font: 500 14px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.feedback-toolbar button {
  width: auto;
  min-width: 160px;
  cursor: pointer;
}

.feedback-toolbar .compact-select select {
  min-width: 0;
}

.feedback-status {
  margin-bottom: 14px;
  min-height: 1.4em;
}

.connection-status {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  font: 600 12px/1.2 "Avenir Next", "Segoe UI", sans-serif;
  letter-spacing: 0.02em;
}

.connection-status-connected {
  background: rgba(42, 125, 79, 0.12);
  color: #2d6b45;
}

.connection-status-fallback {
  background: rgba(204, 90, 43, 0.12);
  color: #9b4a24;
}

.connection-status-neutral {
  background: rgba(18, 69, 89, 0.1);
  color: var(--accent);
}

.feedback-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 16px;
}

.prompt-editor {
  display: grid;
  gap: 8px;
  margin: 6px 0 16px;
}

.prompt-editor label {
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.prompt-editor textarea {
  width: 100%;
  min-height: 160px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  padding: 12px 14px;
  color: var(--ink);
  font: 500 13px/1.45 "SFMono-Regular", Menlo, Consolas, monospace;
}

.prompt-editor-note {
  margin: 0;
}

.feedback-section {
  border: 1px solid rgba(221, 213, 196, 0.7);
  border-radius: 18px;
  padding: 16px;
  background: rgba(255, 252, 245, 0.7);
}

.findings-disclosure summary {
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--ink);
  font: 600 1.17em/1.3 "Avenir Next", "Segoe UI", sans-serif;
  list-style: none;
}

.findings-disclosure summary::-webkit-details-marker {
  display: none;
}

.findings-disclosure summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  margin-right: 6px;
  color: var(--warm);
}

.findings-disclosure[open] summary::before {
  content: "−";
}

.findings-disclosure .issue-list {
  margin-top: 14px;
}

.coach-audio-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.coach-speed-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.coach-autoplay-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.coach-autoplay-control input {
  margin: 0;
}

.coach-speed-control select {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 9px 10px;
  color: var(--ink);
  font: 500 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.coach-audio-controls button {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  padding: 9px 12px;
  color: var(--ink);
  cursor: pointer;
  font: 600 13px/1.2 "Avenir Next", "Segoe UI", sans-serif;
}

.coach-audio-controls button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.feedback-copy {
  color: var(--ink);
  line-height: 1.6;
  white-space: pre-wrap;
}

#coachFeedback.feedback-copy {
  border: 1px solid rgba(164, 154, 133, 0.45);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.96);
  padding: 16px 18px;
  min-height: 96px;
  box-shadow: 0 10px 20px rgba(110, 93, 53, 0.06);
}

.issue-list {
  display: grid;
  gap: 12px;
}

.issue-card {
  border-radius: 16px;
  background: rgba(242, 237, 225, 0.9);
  padding: 12px 14px;
}

.issue-card-positive {
  background: rgba(223, 242, 228, 0.9);
}

.issue-card strong {
  display: block;
  margin-bottom: 6px;
  font: 600 14px/1.3 "Avenir Next", "Segoe UI", sans-serif;
}

.issue-card p {
  margin: 6px 0 0;
  color: var(--muted);
}

.issue-pill {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(18, 69, 89, 0.1);
  color: var(--accent);
  font: 600 11px/1 "Avenir Next", "Segoe UI", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.issue-pill-positive {
  background: rgba(42, 125, 79, 0.14);
  color: #2d6b45;
}

.card-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.sample-card {
  display: grid;
  gap: 6px;
  text-align: left;
  border: 1px solid rgba(164, 154, 133, 0.25);
  border-radius: 18px;
  background: rgba(250, 247, 239, 0.95);
  padding: 14px;
  color: var(--ink);
  cursor: pointer;
}

.sample-card.active {
  border-color: rgba(204, 90, 43, 0.4);
  box-shadow: inset 0 0 0 1px rgba(204, 90, 43, 0.25);
}

.sample-card strong {
  font: 600 15px/1.3 "Avenir Next", "Segoe UI", sans-serif;
}

.sample-card span {
  color: var(--muted);
  font-size: 13px;
}

body.theme-dark .session-icon-btn,
body.theme-dark .session-logout,
body.theme-dark .auth-form input,
body.theme-dark .controls select,
body.theme-dark .icon-button,
body.theme-dark .panel-toggle,
body.theme-dark .student-controls button,
body.theme-dark .student-coach-tools select,
body.theme-dark .student-coach-tools button,
body.theme-dark .feedback-toolbar select,
body.theme-dark .feedback-toolbar button,
body.theme-dark .prompt-editor textarea,
body.theme-dark .coach-speed-control select,
body.theme-dark .coach-audio-controls button {
  background: var(--control-bg);
  border-color: var(--control-border);
  color: var(--ink);
}

body.theme-dark .auth-form button#studentSaveBtn,
body.theme-dark .auth-form button#studentSaveBtn:hover:not(:disabled),
body.theme-dark .auth-form button#studentSaveBtn:focus-visible {
  color: #10130f;
}

body.theme-dark .session-icon-btn:hover,
body.theme-dark .session-logout:hover,
body.theme-dark .icon-button:hover:not(:disabled),
body.theme-dark .student-controls button:hover:not(:disabled),
body.theme-dark .student-coach-tools button:hover:not(:disabled),
body.theme-dark .feedback-toolbar button:hover:not(:disabled),
body.theme-dark .coach-audio-controls button:hover:not(:disabled) {
  background: rgba(62, 65, 54, 0.96);
}

body.theme-dark .hero-brand-frame,
body.theme-dark .auth-brand-frame {
  background:
    radial-gradient(circle at 50% 54%, rgba(140, 203, 215, 0.18), transparent 54%),
    linear-gradient(180deg, rgba(255, 245, 225, 0.08) 0%, rgba(20, 24, 25, 0.08) 100%);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
}

body.theme-dark .hero-brand,
body.theme-dark .auth-brand {
  mix-blend-mode: normal;
  filter: saturate(0.92) brightness(0.82) contrast(1.08);
  opacity: 0.9;
}

body.theme-dark .server-trace {
  border-color: rgba(140, 203, 215, 0.32);
  background: rgba(18, 29, 27, 0.68);
}

body.theme-dark .server-trace-block,
body.theme-dark #coachFeedback.feedback-copy {
  border-color: rgba(var(--line-rgb), 0.85);
  background: rgba(20, 24, 22, 0.82);
  color: var(--ink);
}

body.theme-dark .overall-score-card {
  border-color: rgba(240, 138, 83, 0.42);
  background: linear-gradient(135deg, rgba(240, 162, 96, 0.2), rgba(40, 38, 29, 0.82));
}

body.theme-dark .overall-score-retry,
body.theme-dark .score-pill-retry {
  border-color: rgba(240, 138, 83, 0.42);
  background: rgba(240, 138, 83, 0.14);
}

body.theme-dark .overall-score-retry #studentOverallScoreValue,
body.theme-dark .score-pill-retry,
body.theme-dark .auth-status-error {
  color: #ffb08a;
}

body.theme-dark .student-coach,
body.theme-dark .stat-row,
body.theme-dark .feedback-section {
  border-color: rgba(var(--line-rgb), 0.78);
}

body.theme-dark .summary-item,
body.theme-dark .feedback-section,
body.theme-dark .issue-card,
body.theme-dark .sample-card {
  background: rgba(38, 38, 32, 0.76);
  border-color: rgba(var(--line-rgb), 0.62);
}

body.theme-dark .summary-item.active,
body.theme-dark .issue-card-positive {
  background: rgba(88, 147, 157, 0.18);
}

body.theme-dark .connection-status-connected,
body.theme-dark .issue-pill-positive {
  background: rgba(93, 172, 118, 0.18);
  color: #9bd7a8;
}

body.theme-dark .connection-status-fallback {
  background: rgba(240, 138, 83, 0.16);
  color: #ffb08a;
}

body.theme-dark .connection-status-neutral,
body.theme-dark .issue-pill {
  background: rgba(140, 203, 215, 0.14);
  color: var(--accent);
}

body.theme-dark .sample-card.active {
  border-color: rgba(240, 138, 83, 0.55);
  box-shadow: inset 0 0 0 1px rgba(240, 138, 83, 0.28);
}

@media (max-width: 980px) {
  .session-bar {
    width: 100%;
  }

  .controls {
    grid-template-columns: 1fr;
  }

  .practice-dock {
    grid-column: auto;
    grid-row: auto;
    justify-self: stretch;
  }

  .practice-dock-row {
    flex-wrap: wrap;
  }

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

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

  .overlay-head-row {
    flex-direction: column;
    align-items: start;
  }

  .panel-large,
  .panel-wide,
  .panel:not(.panel-large):not(.panel-wide) {
    grid-column: span 12;
  }

  .student-coach-head {
    align-items: start;
    flex-direction: column;
  }

  .student-coach-meta {
    min-width: 0;
  }
}

@media (max-width: 720px) {
  .session-bar {
    flex-direction: column;
    align-items: stretch;
  }
}