/* NVC Companion — local-first, accessible. Uses site tokens and adds a calm trust palette. */

.nvc-shell {
  --nvc-bg: #f2f7f6;
  --nvc-surface: #ffffff;
  --nvc-surface-2: #f8fbfa;
  --nvc-ink: #152321;
  --nvc-ink-2: #2f4541;
  --nvc-muted: #5b706b;
  --nvc-line: #cfe0db;
  --nvc-line-2: #aec8c1;
  --nvc-accent: #1f6f68;
  --nvc-accent-2: #2a8a81;
  --nvc-accent-soft: #dff0ec;
  --nvc-on-accent: #ffffff;
  --nvc-warm: #7b4a2d;
  --nvc-warm-soft: #f4e8dd;
  --nvc-focus: var(--focus);
  --nvc-shadow: 0 1px 2px rgba(21, 35, 33, 0.05), 0 16px 34px -24px rgba(21, 35, 33, 0.22);
  --nvc-radius: 6px;
}

:root[data-theme="dark"] .nvc-shell {
  --nvc-bg: #111917;
  --nvc-surface: #17211f;
  --nvc-surface-2: #1c2825;
  --nvc-ink: #eef5f3;
  --nvc-ink-2: #d2e2dc;
  --nvc-muted: #9bb3ac;
  --nvc-line: #29403b;
  --nvc-line-2: #3a5851;
  --nvc-accent: #6fc7bd;
  --nvc-accent-2: #93d9d1;
  --nvc-accent-soft: #173330;
  --nvc-on-accent: #10211f;
  --nvc-warm: #e3b08d;
  --nvc-warm-soft: #332419;
  --nvc-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 34px -24px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nvc-shell {
    --nvc-bg: #111917;
    --nvc-surface: #17211f;
    --nvc-surface-2: #1c2825;
    --nvc-ink: #eef5f3;
    --nvc-ink-2: #d2e2dc;
    --nvc-muted: #9bb3ac;
    --nvc-line: #29403b;
    --nvc-line-2: #3a5851;
    --nvc-accent: #6fc7bd;
    --nvc-accent-2: #93d9d1;
    --nvc-accent-soft: #173330;
    --nvc-on-accent: #10211f;
    --nvc-warm: #e3b08d;
    --nvc-warm-soft: #332419;
    --nvc-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 34px -24px rgba(0, 0, 0, 0.55);
  }
}

.nvc-app {
  background: linear-gradient(180deg, var(--nvc-bg), var(--paper));
  border-top: 1px solid var(--line);
  padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(2.5rem, 5vw, 4rem);
}

.nvc-layout {
  display: grid;
  gap: 1.25rem;
  align-items: start;
}

.nvc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.4rem;
  background: var(--nvc-surface);
  border: 1px solid var(--nvc-line);
  border-radius: 999px;
  box-shadow: var(--nvc-shadow);
}

.nvc-tab {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--nvc-ink-2);
  padding: 0.65rem 1rem;
  border-radius: 999px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.nvc-tab:hover {
  color: var(--nvc-ink);
  background: var(--nvc-surface-2);
}

.nvc-tab[aria-selected="true"] {
  background: var(--nvc-accent);
  color: var(--nvc-on-accent);
  border-color: var(--nvc-accent);
}

.nvc-tab:focus-visible {
  outline: 3px solid var(--nvc-focus);
  outline-offset: 2px;
}

.nvc-panel {
  display: grid;
  gap: 1.25rem;
}

.nvc-panel[hidden] {
  display: none;
}

.nvc-card {
  background: var(--nvc-surface);
  border: 1px solid var(--nvc-line);
  border-radius: var(--nvc-radius);
  box-shadow: var(--nvc-shadow);
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.nvc-card h2,
.nvc-card h3,
.nvc-card h4 {
  color: var(--nvc-ink);
}

.nvc-card p,
.nvc-card li {
  color: var(--nvc-ink-2);
}

.nvc-intro {
  display: grid;
  gap: 0.75rem;
}

.nvc-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--nvc-accent-soft);
  color: var(--nvc-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nvc-concepts {
  display: grid;
  gap: 1rem;
}

.nvc-accordion {
  border: 1px solid var(--nvc-line);
  border-radius: var(--nvc-radius);
  background: var(--nvc-surface);
  overflow: clip;
}

.nvc-accordion + .nvc-accordion {
  margin-top: 0;
}

.nvc-accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 600;
  color: var(--nvc-ink);
}

.nvc-accordion summary::-webkit-details-marker { display: none; }

.nvc-accordion summary::after {
  content: "+";
  flex: none;
  color: var(--nvc-accent);
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
}

.nvc-accordion[open] summary::after { content: "\2013"; }

.nvc-accordion summary span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--nvc-muted);
}

.nvc-accordion-body {
  padding: 0 1.1rem 1.1rem;
  display: grid;
  gap: 0.85rem;
}

.nvc-example {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.nvc-example-box {
  border-radius: 6px;
  padding: 0.9rem;
  border: 1px solid var(--nvc-line);
  background: var(--nvc-surface-2);
}

.nvc-example-box h4 {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

.nvc-example-box.is-before h4 { color: var(--nvc-warm); }
.nvc-example-box.is-after h4 { color: var(--nvc-accent); }
.nvc-example-box p { font-size: 0.95rem; line-height: 1.55; }

.nvc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1.25rem;
  align-items: start;
}

.nvc-form {
  display: grid;
  gap: 1rem;
}

.nvc-field label,
.nvc-field .nvc-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--nvc-ink);
}

.nvc-field .hint {
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--nvc-muted);
}

.nvc-shell input[type="text"],
.nvc-shell textarea,
.nvc-shell select {
  width: 100%;
  border: 1px solid var(--nvc-line-2);
  border-radius: 6px;
  background: var(--nvc-surface);
  color: var(--nvc-ink);
  padding: 0.7rem 0.8rem;
  font: inherit;
  font-size: 1rem;
}

.nvc-shell textarea { min-height: 6.5rem; resize: vertical; }

.nvc-shell input:focus-visible,
.nvc-shell textarea:focus-visible,
.nvc-shell select:focus-visible,
.nvc-shell button:focus-visible {
  outline: 3px solid var(--nvc-focus);
  outline-offset: 2px;
}

.nvc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.5rem;
}

.nvc-chip {
  border: 1px solid var(--nvc-line-2);
  background: var(--nvc-surface-2);
  color: var(--nvc-ink-2);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.nvc-chip:hover { border-color: var(--nvc-accent); color: var(--nvc-ink); }
.nvc-chip[aria-pressed="true"] {
  background: var(--nvc-accent-soft);
  border-color: var(--nvc-accent);
  color: var(--nvc-accent);
  font-weight: 600;
}

.nvc-chip-group { margin-top: 0.75rem; }
.nvc-chip-group h4 {
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--nvc-muted);
  margin-bottom: 0.4rem;
}

.nvc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

.nvc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.7rem 1.15rem;
  border-radius: 6px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.nvc-btn--primary { background: var(--nvc-accent); color: var(--nvc-on-accent); border-color: var(--nvc-accent); }
.nvc-btn--primary:hover { background: var(--nvc-accent-2); border-color: var(--nvc-accent-2); }
.nvc-btn--ghost { background: transparent; color: var(--nvc-ink); border-color: var(--nvc-line-2); }
.nvc-btn--ghost:hover { background: var(--nvc-surface-2); border-color: var(--nvc-muted); }

.nvc-output {
  display: grid;
  gap: 1rem;
}

.nvc-result {
  border: 1px solid var(--nvc-line);
  border-left: 4px solid var(--nvc-accent);
  border-radius: 6px;
  background: var(--nvc-surface-2);
  padding: 1rem 1.1rem;
}

.nvc-result h3 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nvc-accent);
  margin-bottom: 0.5rem;
}

.nvc-result p + p { margin-top: 0.65rem; }
.nvc-result .draft {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--nvc-ink);
  white-space: pre-wrap;
}

.nvc-notice {
  border: 1px solid var(--nvc-line);
  border-radius: 6px;
  background: var(--nvc-warm-soft);
  color: var(--nvc-ink-2);
  padding: 0.85rem 1rem;
  font-size: 0.88rem;
  line-height: 1.55;
}

.nvc-notice strong { color: var(--nvc-ink); }

.nvc-hints {
  display: grid;
  gap: 0.6rem;
}

.nvc-hint {
  padding: 0.75rem 0.9rem;
  border-radius: 6px;
  border: 1px solid var(--nvc-line);
  background: var(--nvc-surface);
  font-size: 0.9rem;
  color: var(--nvc-ink-2);
}

.nvc-hint strong { color: var(--nvc-ink); }

.nvc-steps {
  display: grid;
  gap: 0.85rem;
}

.nvc-step {
  border: 1px solid var(--nvc-line);
  border-radius: var(--nvc-radius);
  background: var(--nvc-surface);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.6rem;
}

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

.nvc-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--nvc-accent-soft);
  color: var(--nvc-accent);
  font-weight: 700;
  font-size: 0.85rem;
  flex: none;
}

.nvc-step h3 { font-size: 1.15rem; }
.nvc-step .goal { color: var(--nvc-muted); font-size: 0.92rem; }

.nvc-step textarea {
  min-height: 4.5rem;
}

.nvc-check {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--nvc-ink-2);
}

.nvc-check input {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.15rem;
  accent-color: var(--nvc-accent);
  flex: none;
}

.nvc-progress {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--nvc-line);
  border-radius: 999px;
  background: var(--nvc-surface);
}

.nvc-progress-bar {
  flex: 1 1 12rem;
  height: 0.55rem;
  background: var(--nvc-surface-2);
  border: 1px solid var(--nvc-line);
  border-radius: 999px;
  overflow: hidden;
}

.nvc-progress-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--nvc-accent);
  transition: width var(--dur) var(--ease);
}

.nvc-progress p { font-size: 0.88rem; color: var(--nvc-muted); margin: 0; }

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

.nvc-scenario {
  border: 1px solid var(--nvc-line);
  border-radius: var(--nvc-radius);
  background: var(--nvc-surface);
  padding: 1rem;
}

.nvc-scenario h3 { font-size: 1.05rem; margin-bottom: 0.4rem; }
.nvc-scenario p { font-size: 0.9rem; color: var(--nvc-ink-2); }
.nvc-scenario p + p { margin-top: 0.55rem; }

.nvc-status {
  min-height: 1.4em;
  font-size: 0.85rem;
  color: var(--nvc-muted);
}

@media (max-width: 980px) {
  .nvc-grid,
  .nvc-example,
  .nvc-scenarios {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nvc-tabs {
    border-radius: 12px;
  }
  .nvc-tab {
    flex: 1 1 auto;
    justify-content: center;
  }
  .nvc-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .nvc-btn { width: 100%; }
  .nvc-progress { border-radius: 12px; }
}

@media print {
  .nvc-app, .nvc-shell { background: #fff !important; }
  .nvc-tabs, .nvc-actions, .nvc-chips, .nvc-status { display: none !important; }
  .nvc-panel[hidden] { display: block !important; }
  .nvc-card, .nvc-step, .nvc-accordion { box-shadow: none !important; }
}