@import url("https://fonts.googleapis.com/css2?family=Alegreya:wght@500;700;800&family=IBM+Plex+Mono:wght@400;500;600&family=Manrope:wght@400;500;600;700&display=swap");

:root {
  color-scheme: light;
  --bg: #f8f3e9;
  --bg-strong: #f2e7d4;
  --paper: rgba(255, 251, 244, 0.82);
  --paper-strong: rgba(255, 249, 239, 0.94);
  --ink: #1f2d37;
  --muted: #5f6d75;
  --line: rgba(65, 84, 96, 0.2);
  --accent: #e85a2d;
  --accent-strong: #ca431b;
  --teal: #1f6d77;
  --teal-soft: rgba(31, 109, 119, 0.12);
  --success: #23835f;
  --danger: #b44526;
  --shadow: 0 30px 80px rgba(99, 73, 45, 0.15);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(232, 90, 45, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(31, 109, 119, 0.1), transparent 24%),
    linear-gradient(180deg, #fbf8f2 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: "Manrope", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

.app-shell {
  position: relative;
  width: min(1400px, calc(100% - 32px));
  margin: 18px auto;
  padding: 28px;
  border: 1px solid rgba(115, 88, 58, 0.18);
  border-radius: 32px;
  background: rgba(255, 250, 242, 0.82);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.language-switcher {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 3;
  display: inline-flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid rgba(115, 88, 58, 0.18);
  border-radius: 999px;
  background: rgba(255, 251, 244, 0.92);
  box-shadow: 0 12px 24px rgba(99, 73, 45, 0.08);
}

.language-button {
  min-width: 52px;
  padding: 10px 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition:
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.language-button:hover {
  transform: translateY(-1px);
  color: var(--ink);
}

.language-button.is-active {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: #fff8f2;
  box-shadow: 0 10px 20px rgba(202, 67, 27, 0.22);
}

.page-noise {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(177, 150, 120, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(177, 150, 120, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.5;
  pointer-events: none;
}

.hero,
.layout,
.panel,
.response-box,
.status-card,
.status-strip,
.transcript-card,
.session-box,
.toggle-row,
.level-explainer,
.composer {
  position: relative;
  z-index: 1;
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr minmax(240px, 360px);
  gap: 20px;
  align-items: start;
  margin-bottom: 22px;
}

.hero-mark {
  display: flex;
  gap: 18px;
  align-items: center;
}

.beaker-icon {
  position: relative;
  width: 86px;
  height: 86px;
  flex: 0 0 auto;
  border: 2px solid rgba(31, 45, 55, 0.12);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 251, 245, 0.95), rgba(248, 237, 223, 0.95));
}

.beaker-icon::before,
.beaker-icon::after,
.beaker-icon span {
  position: absolute;
  display: block;
  content: "";
}

.beaker-icon::before {
  left: 30px;
  top: 10px;
  width: 24px;
  height: 16px;
  border: 4px solid var(--ink);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
}

.beaker-icon::after {
  left: 18px;
  top: 24px;
  width: 48px;
  height: 42px;
  border: 4px solid var(--ink);
  border-top: 0;
  border-radius: 0 0 18px 18px;
  background:
    linear-gradient(180deg, transparent 0 42%, rgba(232, 90, 45, 0.92) 42% 100%);
}

.beaker-icon span:nth-child(1) {
  left: 24px;
  bottom: 16px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #fff7f1;
}

.beaker-icon span:nth-child(2) {
  left: 42px;
  bottom: 20px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #fff7f1;
}

.beaker-icon span:nth-child(3) {
  left: 56px;
  bottom: 14px;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: #fff7f1;
}

.hero-kicker,
.eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 820px;
  font-family: "Alegreya", serif;
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  line-height: 0.92;
  letter-spacing: 0.02em;
}

.hero-note {
  padding: 22px 24px;
  border: 1px solid rgba(115, 88, 58, 0.18);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 250, 243, 0.98), rgba(247, 236, 220, 0.92));
}

.hero-note-label {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.98rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-note p:last-child {
  margin: 0;
  line-height: 1.6;
}

.layout {
  display: grid;
  grid-template-columns: minmax(420px, 0.95fr) minmax(460px, 1.05fr);
  gap: 18px;
}

.panel {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(115, 88, 58, 0.2);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--paper-strong), var(--paper));
  backdrop-filter: blur(10px);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-header h2 {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(115, 88, 58, 0.2);
  border-radius: 999px;
  background: rgba(255, 251, 245, 0.9);
  color: var(--accent-strong);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.live-tag {
  color: var(--ink);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.level-card {
  text-align: left;
  padding: 18px;
  border: 1px solid rgba(115, 88, 58, 0.18);
  border-radius: 22px;
  background: rgba(255, 252, 247, 0.82);
  color: inherit;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.level-card:hover {
  transform: translateY(-2px);
  border-color: rgba(232, 90, 45, 0.4);
  box-shadow: 0 14px 30px rgba(113, 83, 55, 0.1);
}

.level-card.is-active {
  border-color: rgba(232, 90, 45, 0.7);
  box-shadow: inset 0 0 0 1px rgba(232, 90, 45, 0.24);
}

.level-number {
  display: block;
  margin-bottom: 12px;
  font-family: "Alegreya", serif;
  font-size: 2.7rem;
  line-height: 1;
}

.level-name {
  display: block;
  margin-bottom: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.level-description {
  display: block;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.45;
}

.session-box,
.toggle-row,
.level-explainer,
.composer,
.status-card,
.status-strip,
.transcript-card {
  border: 1px solid rgba(115, 88, 58, 0.18);
  border-radius: var(--radius-lg);
  background: rgba(255, 251, 244, 0.9);
}

.session-box,
.toggle-row,
.level-explainer {
  padding: 18px 20px;
  margin-bottom: 16px;
}

.session-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.session-value {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1rem;
  word-break: break-all;
}

.ghost-button,
.primary-button {
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  transition:
    transform 160ms ease,
    opacity 160ms ease,
    background 160ms ease;
}

.ghost-button {
  padding: 12px 16px;
  background: var(--teal-soft);
  color: var(--teal);
  font-weight: 700;
}

.ghost-button:hover,
.primary-button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.toggle-copy,
.level-explainer p,
.status-card p,
.transcript-card p,
.response-content p {
  line-height: 1.6;
}

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

.accent {
  color: var(--accent-strong);
}

.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.switch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch-track {
  position: relative;
  width: 72px;
  height: 40px;
  border-radius: 999px;
  background: rgba(31, 45, 55, 0.2);
  transition: background 160ms ease;
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff9f2;
  box-shadow: 0 8px 18px rgba(31, 45, 55, 0.16);
  transition: transform 160ms ease;
}

.switch input:checked + .switch-track {
  background: rgba(232, 90, 45, 0.6);
}

.switch input:checked + .switch-track::after {
  transform: translateX(32px);
}

.level-explainer h3 {
  margin: 0 0 10px;
  font-family: "Alegreya", serif;
  font-size: 1.7rem;
}

.helper-warning {
  color: var(--danger);
}

.composer {
  padding: 18px;
}

.composer-label {
  display: block;
  margin-bottom: 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.composer textarea {
  width: 100%;
  min-height: 170px;
  resize: vertical;
  padding: 18px 20px;
  border: 1px solid rgba(115, 88, 58, 0.24);
  border-radius: 18px;
  background: rgba(255, 253, 248, 0.88);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.6;
}

.composer textarea:focus {
  outline: 2px solid rgba(232, 90, 45, 0.28);
  border-color: rgba(232, 90, 45, 0.5);
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 14px;
}

.message-limit {
  margin: 0;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.9rem;
}

.primary-button {
  min-width: 184px;
  padding: 14px 22px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  color: #fff8f2;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.96rem;
  font-weight: 600;
  text-transform: uppercase;
  box-shadow: 0 16px 28px rgba(202, 67, 27, 0.28);
}

.primary-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.panel-right {
  min-height: 100%;
}

.response-box {
  display: grid;
  grid-template-columns: 66px 1fr;
  min-height: 340px;
  margin-bottom: 16px;
  overflow: hidden;
  border: 1px solid rgba(115, 88, 58, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(255, 250, 242, 0.92);
}

.response-gutter {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 0;
  background: #222830;
  color: rgba(255, 247, 238, 0.72);
  font-family: "IBM Plex Mono", monospace;
  align-items: center;
}

.response-content {
  padding: 28px;
}

.response-content p {
  margin: 0;
  white-space: pre-wrap;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1rem;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.status-card {
  padding: 18px 20px;
}

.status-card strong,
.status-strip strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.status-card.is-alert {
  border-color: rgba(180, 69, 38, 0.44);
}

.status-card.is-success {
  border-color: rgba(35, 131, 95, 0.38);
  background: rgba(241, 255, 247, 0.92);
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 18px 20px;
  margin-bottom: 14px;
}

.transcript {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.transcript-card {
  padding: 18px 20px;
}

.status-ready {
  box-shadow: inset 0 0 0 1px rgba(31, 109, 119, 0.08);
}

.status-pending {
  box-shadow: inset 0 0 0 1px rgba(244, 184, 96, 0.3);
}

.status-error {
  box-shadow: inset 0 0 0 1px rgba(180, 69, 38, 0.24);
}

.status-blocked {
  box-shadow: inset 0 0 0 1px rgba(180, 69, 38, 0.22);
}

.status-success {
  box-shadow: inset 0 0 0 1px rgba(35, 131, 95, 0.2);
}

.confetti-layer {
  pointer-events: none;
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  top: -14px;
  width: 12px;
  height: 24px;
  border-radius: 4px;
  opacity: 0;
  animation-name: confetti-fall;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-fill-mode: forwards;
}

@keyframes confetti-fall {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  10% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate3d(16px, 540px, 0) rotate(520deg);
  }
}

@media (max-width: 1080px) {
  .app-shell {
    padding-top: 88px;
  }

  .hero,
  .layout {
    grid-template-columns: 1fr;
  }

  .status-strip,
  .transcript,
  .status-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: calc(100% - 16px);
    margin: 8px auto;
    padding: 84px 16px 16px;
    border-radius: 24px;
  }

  .language-switcher {
    top: 14px;
    right: 14px;
  }

  .language-button {
    min-width: 48px;
    padding: 9px 10px;
  }

  .hero-mark {
    align-items: flex-start;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .panel {
    padding: 16px;
  }

  .level-grid,
  .status-grid,
  .status-strip,
  .transcript {
    grid-template-columns: 1fr;
  }

  .session-box,
  .toggle-row,
  .composer-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .response-box {
    grid-template-columns: 54px 1fr;
  }

  .primary-button,
  .ghost-button {
    width: 100%;
  }
}