:root {
  color-scheme: dark;
  --bg: #090d14;
  --panel: #141a24;
  --panel-soft: #101620;
  --ink: #f4f7fb;
  --muted: #a8b3c4;
  --line: rgba(148, 163, 184, 0.24);
  --brand: #ffcc00;
  --brand-dark: #e5b700;
  --accent: #ff5a66;
  --soft: rgba(255, 204, 0, 0.13);
  --button-bg: #ffcc00;
  --button-ink: #15120a;
  --danger: #c9343b;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(255, 204, 0, 0.16) 0, transparent 34rem), radial-gradient(circle at bottom right, rgba(212, 5, 17, 0.16) 0, transparent 28rem), var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 999px;
  background: var(--button-bg);
  color: var(--button-ink);
  cursor: pointer;
  font-weight: 700;
  min-height: 2.75rem;
  padding: 0.78rem 1.05rem;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: #0f1623;
  color: var(--ink);
  min-height: 2.75rem;
  padding: 0.85rem 1rem;
}

input::placeholder,
textarea::placeholder {
  color: #748095;
}

textarea {
  resize: vertical;
}

a {
  color: var(--brand);
  font-weight: 700;
}

main,
.topbar {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

main {
  display: grid;
  gap: 1rem;
  padding: 1rem 0 2rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 0.5rem;
}

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

h1 {
  margin-bottom: 0;
  font-size: clamp(1.4rem, 4vw, 2.35rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.25rem, 3vw, 2rem);
}

h3 {
  margin-bottom: 0.35rem;
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.panel,
.login-card {
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: rgba(20, 26, 36, 0.92);
  box-shadow: var(--shadow);
  overflow-wrap: anywhere;
  padding: 1.15rem;
}

.hero {
  padding: clamp(1.25rem, 4vw, 2.2rem);
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.7rem;
}

.search-row input {
  border-radius: 999px;
  font-size: 1.05rem;
  padding: 1rem 1.2rem;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.button-row.end {
  justify-content: flex-end;
}

.ghost-button,
.card button.secondary {
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--ink);
}

.danger-button {
  background: var(--danger);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat-card {
  border-radius: 1.25rem;
  background: linear-gradient(135deg, #1b2433, #111827);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 1rem;
}

.stat-card strong {
  display: block;
  font-size: 1.8rem;
}

.stat-card span {
  color: #dbe3ef;
}

.grid-layout,
.management-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.management-grid {
  align-items: start;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.card-list {
  display: grid;
  gap: 0.75rem;
}

.card-list.compact {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: var(--panel-soft);
  overflow-wrap: anywhere;
  padding: 1rem;
}

.card p {
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: var(--soft);
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.25rem 0.65rem;
}

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

.practice-panel {
  border-color: rgba(255, 90, 102, 0.36);
}

.practice-content {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.answer-list {
  display: grid;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.answer-list li {
  border-left: 4px solid var(--brand);
  border-radius: 0.8rem;
  background: rgba(255, 204, 0, 0.08);
  padding: 0.75rem;
}

.recorder-box,
.detail-box {
  border: 1px dashed rgba(148, 163, 184, 0.36);
  border-radius: 1.2rem;
  background: #0f1623;
  margin-top: 0.9rem;
  padding: 1rem;
}

.recording-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.recording-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(20, 26, 36, 0.72);
  padding: 0.8rem;
}

audio {
  width: 100%;
  margin-top: 0.7rem;
}

@media (hover: none) {
  button:hover {
    transform: none;
  }
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.8rem;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

summary {
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 800;
}

.stack-form {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

label {
  display: grid;
  gap: 0.4rem;
  color: #d6deea;
  font-weight: 700;
}

.hidden {
  display: none !important;
}

.login-page {
  display: grid;
  place-items: center;
  padding: 1rem;
}

.login-card {
  width: min(440px, 100%);
}

.login-form {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.2rem;
}

@media (max-width: 820px) {
  .topbar,
  .section-head {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar form,
  .topbar form button {
    width: 100%;
  }

  .search-row,
  .grid-layout,
  .management-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .search-row button,
  .hero-actions button,
  .button-row button,
  .recording-item button {
    width: 100%;
  }

  .recording-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  main,
  .topbar {
    width: min(100% - 0.75rem, 1180px);
  }

  main {
    gap: 0.75rem;
    padding: 0.75rem 0 1.25rem;
  }

  .topbar {
    gap: 0.65rem;
    padding: 0.8rem 0 0.25rem;
  }

  h1 {
    font-size: 1.2rem;
    line-height: 1.2;
  }

  h2 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
  }

  h3 {
    font-size: 1rem;
  }

  .eyebrow {
    font-size: 0.68rem;
    letter-spacing: 0.06em;
  }

  .panel,
  .login-card {
    border-radius: 1rem;
    padding: 0.85rem;
  }

  .hero {
    padding: 1rem;
  }

  .search-row {
    gap: 0.55rem;
  }

  .search-row input {
    border-radius: 0.95rem;
    font-size: 1rem;
    padding: 0.85rem;
  }

  button {
    padding: 0.72rem 0.9rem;
  }

  input,
  textarea {
    border-radius: 0.85rem;
    padding: 0.78rem 0.85rem;
  }

  .hero-actions,
  .button-row {
    gap: 0.5rem;
    margin-top: 0.65rem;
  }

  .stats-grid {
    gap: 0.6rem;
  }

  .stat-card {
    border-radius: 1rem;
    padding: 0.85rem;
  }

  .stat-card strong {
    font-size: 1.35rem;
  }

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

  .card {
    border-radius: 1rem;
    padding: 0.85rem;
  }

  .pill {
    font-size: 0.72rem;
  }

  .recorder-box,
  .detail-box {
    border-radius: 1rem;
    padding: 0.85rem;
  }

  .recording-item {
    border-radius: 0.9rem;
    padding: 0.7rem;
  }

  .table-wrap {
    overflow: visible;
  }

  table,
  thead,
  tbody,
  tr,
  td {
    display: block;
    width: 100%;
  }

  table {
    min-width: 0;
  }

  thead {
    display: none;
  }

  tr {
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: var(--panel-soft);
    margin-bottom: 0.75rem;
    padding: 0.75rem;
  }

  td {
    border-bottom: 0;
    padding: 0.4rem 0;
  }

  td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    margin-bottom: 0.2rem;
    text-transform: uppercase;
  }

  td .button-row {
    margin-top: 0.35rem;
  }

  summary {
    font-size: 1rem;
    padding: 0.25rem 0;
  }

  .stack-form {
    gap: 0.65rem;
  }
}

@media (max-width: 420px) {
  body {
    background: radial-gradient(circle at top left, rgba(255, 204, 0, 0.12) 0, transparent 20rem), var(--bg);
  }

  .login-card {
    width: 100%;
  }

  .stat-card strong {
    font-size: 1.15rem;
  }
}