/* libreDecision v3 — tokens and base.
   Two moods: « pierre » (cool stone, light) and « nuit » (well at night, dark).
   Borderless: depth comes from background and shadow, never from strokes.
   Radii: cards 16px · inputs 12px · pills and buttons 20px · icon holders 14px. */

@import '@fontsource-variable/nunito';
@import '@fontsource-variable/literata/opsz.css';
@import '@fontsource-variable/literata/opsz-italic.css';

:root,
[data-mood='pierre'] {
  --bg: #e9eeec;
  --surface: #f6f8f7;
  --surface-2: #dfe6e3;
  --ink: #18282a;
  --ink-soft: #4e615f;
  --ink-faint: #7f908d;
  --water: #1f6f78;
  --water-light: #8cc3c4;
  --water-wash: rgb(31 111 120 / 0.08);
  --moss: #4c7a4b;
  --moss-wash: rgb(76 122 75 / 0.12);
  --ochre: #a8661e;
  --ochre-wash: rgb(168 102 30 / 0.12);
  --on-water: #f6f8f7;
  --shadow: 0 1px 2px rgb(20 40 40 / 0.06), 0 8px 28px rgb(20 40 40 / 0.07);
  --shadow-strong: 0 2px 6px rgb(20 40 40 / 0.1), 0 18px 48px rgb(20 40 40 / 0.16);
  --veil: rgb(16 30 31 / 0.28);
  color-scheme: light;
}

[data-mood='nuit'] {
  --bg: #0e1819;
  --surface: #142224;
  --surface-2: #1b2d2f;
  --ink: #e2ebe8;
  --ink-soft: #a2b4b0;
  --ink-faint: #6e827e;
  --water: #6ec1c6;
  --water-light: #2d6a70;
  --water-wash: rgb(110 193 198 / 0.08);
  --moss: #8dbf84;
  --moss-wash: rgb(141 191 132 / 0.12);
  --ochre: #e0a458;
  --ochre-wash: rgb(224 164 88 / 0.12);
  --on-water: #0e1819;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 8px 28px rgb(0 0 0 / 0.28);
  --shadow-strong: 0 2px 6px rgb(0 0 0 / 0.4), 0 18px 48px rgb(0 0 0 / 0.5);
  --veil: rgb(0 0 0 / 0.5);
  color-scheme: dark;
}

:root {
  --font-ui: 'Nunito Variable', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-text: 'Literata Variable', 'Iowan Old Style', Georgia, serif;
  --r-card: 16px;
  --r-input: 12px;
  --r-pill: 20px;
  --r-icon: 14px;
  --sidebar: 15.5rem;
  --panel: 27rem;
  --measure: 36rem;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1.2;
}

p {
  margin: 0;
}

a {
  color: var(--water);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--water);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection {
  background: var(--water-light);
  color: var(--ink);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Buttons — native, custom. */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.4rem;
  padding: 0.5rem 1.1rem;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--surface-2);
  color: var(--ink);
  font-weight: 650;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.1s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}
.btn.primary {
  background: var(--water);
  color: var(--on-water);
  box-shadow: 0 6px 18px rgb(31 111 120 / 0.22);
}
.btn.quiet {
  background: transparent;
  color: var(--ink-soft);
  padding-inline: 0.6rem;
}
.btn.quiet:hover {
  background: var(--water-wash);
  color: var(--ink);
}
.btn.small {
  min-height: 2.25rem;
  padding: 0.3rem 0.8rem;
  font-size: 0.88rem;
}

/* Fields — native, custom. */
.field {
  display: grid;
  gap: 0.35rem;
}
.field > span {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-soft);
}
.input,
.textarea,
.select {
  width: 100%;
  border: 0;
  border-radius: var(--r-input);
  background: var(--surface-2);
  padding: 0.6rem 0.8rem;
  min-height: 2.4rem;
  box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.06);
}
.textarea {
  resize: vertical;
  font-family: var(--font-text);
  font-size: 1.02rem;
  line-height: 1.65;
  min-height: 9rem;
}
.input:focus-visible,
.textarea:focus-visible,
.select:focus-visible {
  outline-offset: 1px;
}

.card {
  background: var(--surface);
  border-radius: var(--r-card);
  box-shadow: var(--shadow);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.1rem 0.55rem;
  border-radius: var(--r-pill);
  background: var(--surface-2);
  color: var(--ink-soft);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.tag.water {
  background: var(--water-wash);
  color: var(--water);
}
.tag.moss {
  background: var(--moss-wash);
  color: var(--moss);
}
.tag.ochre {
  background: var(--ochre-wash);
  color: var(--ochre);
}

.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--water);
}

.muted {
  color: var(--ink-soft);
}
.faint {
  color: var(--ink-faint);
}

/* The texts of reference. */
.prose {
  font-family: var(--font-text);
  font-size: clamp(1.04rem, 0.98rem + 0.25vw, 1.14rem);
  line-height: 1.72;
  font-variation-settings: 'opsz' 14;
  hyphens: auto;
}
.prose p + p,
.prose p + ul,
.prose ul + p {
  margin-top: 0.75em;
}
.prose ul,
.prose ol {
  margin: 0.5em 0 0;
  padding-left: 1.2em;
}
.prose li + li {
  margin-top: 0.25em;
}
.prose strong {
  font-weight: 650;
}
.prose code {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
  font-size: 0.86em;
  background: var(--surface-2);
  padding: 0.05em 0.35em;
  border-radius: 6px;
}

.diff-added {
  background: var(--moss-wash);
  color: var(--ink);
  text-decoration: none;
  border-radius: 4px;
}
.diff-removed {
  background: var(--ochre-wash);
  color: var(--ink-soft);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}