frontend/styles.css

:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: rgba(17, 31, 52, 0.86);
  --panel-strong: rgba(27, 45, 73, 0.94);
  --text: #ecf4ff;
  --muted: #a6b7cc;
  --line: rgba(168, 198, 255, 0.18);
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --danger: #fb7185;
  --success: #34d399;
  --warning: #fbbf24;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 32rem),
    radial-gradient(circle at 80% 10%, rgba(129, 140, 248, 0.18), transparent 28rem),
    var(--bg);
  color: var(--text);
}

button,
.link-button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04111f;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  min-height: 2.6rem;
  padding: 0.75rem 1rem;
  text-decoration: none;
}

button:disabled {
  cursor: not-allowed;
  filter: grayscale(0.5);
  opacity: 0.55;
}

button.secondary,
.link-button {
  background: rgba(125, 211, 252, 0.1);
  border: 1px solid rgba(125, 211, 252, 0.34);
  color: var(--accent);
}

textarea,
input[type="range"] {
  width: 100%;
}

textarea {
  background: rgba(7, 17, 31, 0.72);
  border: 1px solid var(--line);
  border-radius: 1rem;
  color: var(--text);
  font: inherit;
  padding: 0.85rem 1rem;
  resize: vertical;
}

label {
  color: var(--muted);
  display: block;
  font-size: 0.9rem;
  font-weight: 650;
  margin: 1rem 0 0.45rem;
}

.shell {
  margin: 0 auto;
  max-width: 1240px;
  padding: 2rem;
}

.hero {
  align-items: stretch;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 28rem);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 5rem);
  letter-spacing: -0.06em;
  line-height: 0.92;
  margin: 0;
}

.lede {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.65;
  max-width: 56rem;
}

.eyebrow,
.section-label {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  margin: 0 0 0.65rem;
  text-transform: uppercase;
}

.panel,
.hero-card {
  backdrop-filter: blur(18px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.26);
}

.hero-card {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
}

.stat {
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  place-content: center;
  padding: 1.2rem;
  text-align: center;
}

.stat span {
  font-size: 2rem;
  font-weight: 850;
}

.stat label {
  margin: 0.25rem 0 0;
}

.toolbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding: 1rem;
}

.status {
  color: var(--muted);
  margin-left: auto;
}

.question {
  margin-bottom: 1rem;
  padding: 1.35rem;
}

.question h2 {
  font-size: clamp(1.35rem, 3vw, 2.15rem);
  letter-spacing: -0.035em;
  margin: 0;
}

.workspace {
  align-items: start;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) minmax(19rem, 25rem);
}

.workspace > .panel,
.answer-panel {
  padding: 1.25rem;
}

.panel-heading {
  align-items: end;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.panel-heading h2 {
  margin: 0;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  margin: 0;
  max-width: 24rem;
}

.documents {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.doc-card {
  background: rgba(7, 17, 31, 0.56);
  border: 1px solid var(--line);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 17rem;
  padding: 1rem;
}

.doc-card.flagged {
  border-color: rgba(251, 113, 133, 0.72);
  box-shadow: inset 0 0 0 1px rgba(251, 113, 133, 0.25);
}

.doc-card.read {
  border-color: rgba(52, 211, 153, 0.46);
}

.doc-top {
  align-items: start;
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
}

.doc-title {
  font-weight: 800;
  margin: 0;
}

.badge {
  border-radius: 999px;
  color: var(--accent);
  flex: 0 0 auto;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.25rem 0.55rem;
  background: rgba(125, 211, 252, 0.12);
}

.doc-content {
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}

.doc-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

.doc-actions button {
  flex: 1;
  min-height: 2.25rem;
  padding: 0.5rem 0.7rem;
}

.result,
.model-output {
  background: rgba(7, 17, 31, 0.68);
  border: 1px solid var(--line);
  border-radius: 1rem;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 1rem;
  padding: 1rem;
  white-space: pre-wrap;
}

.result strong {
  color: var(--text);
}

.hidden {
  display: none;
}

@media (max-width: 920px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

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

  .status {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 560px) {
  .shell {
    padding: 1rem;
  }

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