/* =========================================================================
   prompts.birennayak.in — house design system
   Shared shell + components. Each prompt page injects its own --accent tokens
   AFTER this file (see build.mjs → accentBlock).
   ========================================================================= */

:root {
  /* neutrals — picked, faintly warm */
  --bg: #F7F6F3;
  --surface: #FFFFFF;
  --surface-2: #EEEDE8;
  --ink: #1E1D1A;
  --ink-soft: #6A675F;
  --line: #E2E0D8;

  /* house accent (used on the gallery + shell); prompt pages override */
  --accent: #15616D;
  --accent-2: #B4762A;
  --on-accent: #FFFFFF;

  /* semantic */
  --focus: var(--accent);
  --shadow: 22px 34px 60px -40px rgba(40, 32, 22, 0.42);
  --radius: 6px;

  --measure: 42rem;

  --font-display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15161A;
    --surface: #1E2025;
    --surface-2: #262930;
    --ink: #ECEBE6;
    --ink-soft: #A3A29B;
    --line: #33363D;
    --accent: #56B6C2;
    --accent-2: #DCA94F;
    --shadow: 22px 34px 66px -42px rgba(0, 0, 0, 0.72);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #15161A;
  --surface: #1E2025;
  --surface-2: #262930;
  --ink: #ECEBE6;
  --ink-soft: #A3A29B;
  --line: #33363D;
  --accent: #56B6C2;
  --accent-2: #DCA94F;
  --shadow: 22px 34px 66px -42px rgba(0, 0, 0, 0.72);
  color-scheme: dark;
}

/* -------------------------------------------------------------------------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

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

a { color: inherit; }

img { max-width: 100%; display: block; }

/* ---- layout ---- */

.container {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding-inline: clamp(1.15rem, 5vw, 1.75rem);
}

.container-wide {
  width: 100%;
  max-width: 68rem;
  margin: 0 auto;
  padding-inline: clamp(1.15rem, 5vw, 2rem);
}

/* ---- site header ---- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.2) blur(6px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.85rem;
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.98rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--ink);
}

.wordmark b { color: var(--accent); font-weight: 500; }
.wordmark .caret { color: var(--accent-2); }

.theme-toggle {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.theme-toggle:hover { color: var(--ink); border-color: var(--ink-soft); }

/* ---- generic section rhythm ---- */

main { display: block; }

.kicker {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.28rem;
  letter-spacing: -0.01em;
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.kicker::before {
  content: "";
  width: 1.4rem;
  height: 2px;
  background: var(--accent-2);
  transform: translateY(-0.35em);
  flex: none;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0;
}

/* =========================================================================
   GALLERY (home)
   ========================================================================= */

.gallery-hero {
  padding-block: clamp(2.75rem, 8vw, 4.5rem) clamp(1.75rem, 5vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.gallery-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
  max-width: 18ch;
}

.gallery-hero p {
  margin: 0;
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 52ch;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: clamp(1.5rem, 4vw, 2.25rem);
}

.filter {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.filter:hover { color: var(--ink); }
.filter[aria-pressed="true"] {
  color: var(--on-accent);
  background: var(--accent);
  border-color: var(--accent);
}

.prompt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: clamp(1rem, 3vw, 1.6rem);
  padding-bottom: clamp(3rem, 8vw, 5rem);
}

.prompt-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.prompt-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--card-accent, var(--accent)) 55%, var(--line));
}

.prompt-card .card-media {
  aspect-ratio: 4 / 5;
  background: var(--surface-2);
  overflow: hidden;
}

.prompt-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.prompt-card .card-body {
  padding: 0.95rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}

.chip {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--card-accent, var(--accent));
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 40%, var(--line));
  border-radius: 3px;
  padding: 0.15rem 0.4rem;
}

.prompt-card h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0.1rem 0 0;
}

.prompt-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

.empty {
  grid-column: 1 / -1;
  color: var(--ink-soft);
  font-size: 0.95rem;
  padding: 2rem 0;
}

/* =========================================================================
   PROMPT PAGE
   ========================================================================= */

.prompt-page {
  padding-block: clamp(1.5rem, 5vw, 2.5rem) clamp(3rem, 8vw, 5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(2.5rem, 7vw, 3.5rem);
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
}

.back-link:hover { color: var(--ink); }

.prompt-head { display: flex; flex-direction: column; gap: 1rem; }

.prompt-head h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 2.9rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin: 0;
}

.prompt-head h1 em { color: var(--accent); font-style: normal; }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

.meta-row .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-soft); }

.lede {
  font-size: clamp(1.05rem, 2.6vw, 1.18rem);
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0;
}

section.block { display: flex; flex-direction: column; gap: 1.25rem; }

/* ---- before / after ---- */

.diptych { display: grid; grid-template-columns: 1fr; gap: 0.9rem; }

@media (min-width: 34rem) {
  .diptych { grid-template-columns: 1fr auto 1fr; align-items: center; }
}

figure { margin: 0; display: flex; flex-direction: column; gap: 0.55rem; }

.frame {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 4px;
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.frame.after { border-color: var(--accent-2); box-shadow: var(--shadow); }
.frame img { width: 100%; height: 100%; object-fit: cover; }

.tag {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.24rem 0.5rem;
  border-radius: 2px;
  background: var(--ink);
  color: var(--bg);
}

.frame.after .tag { background: var(--accent); color: var(--on-accent); }

.arrow {
  justify-self: center;
  color: var(--accent-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1;
}

figcaption { font-size: 0.88rem; color: var(--ink-soft); }

.swap-note { font-size: 0.88rem; color: var(--ink-soft); font-style: italic; margin: 0; }

/* ---- prompt plaque ---- */

.plaque {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent-2);
  border-radius: 5px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.plaque-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem 0.8rem 1.15rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.plaque-head span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.copy-btn {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--on-accent);
  background: var(--accent);
  border: none;
  border-radius: 3px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: filter 0.16s ease, transform 0.12s ease;
  white-space: nowrap;
}

.copy-btn:hover { filter: brightness(0.92); }
.copy-btn:active { transform: translateY(1px); }
.copy-btn.done { background: var(--accent-2); }

.prompt-text {
  margin: 0;
  padding: 1.15rem 1.15rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ink);
  white-space: pre-wrap;
  overflow-x: auto;
}

.plaque.secondary { box-shadow: none; border-left-color: var(--line); }
.plaque.secondary .plaque-head { background: transparent; }
.plaque.secondary .prompt-text { color: var(--ink-soft); font-size: 0.84rem; }
.plaque.secondary .copy-btn { background: var(--ink-soft); }

/* ---- steps ---- */

ol.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
  counter-reset: step;
}

ol.steps li {
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.9rem;
  align-items: start;
}

ol.steps li::before {
  counter-increment: step;
  content: counter(step);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--accent);
  line-height: 1.15;
  text-align: center;
  border-bottom: 2px solid var(--line);
  padding-bottom: 0.12rem;
}

ol.steps li p { margin: 0; }

/* ---- tips ---- */

ul.tips { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.75rem; }

ul.tips li {
  display: flex;
  gap: 0.7rem;
  font-size: 0.98rem;
}

ul.tips li::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
}

ul.tips li > span { min-width: 0; }

/* ---- note ---- */

.note {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-2);
  padding: 1.15rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.note strong { color: var(--ink); font-weight: 600; }
.note code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  padding: 0.05em 0.35em;
  border-radius: 3px;
}

em { font-style: italic; }
strong { font-weight: 600; }
p a, .note a, li a { color: var(--accent); text-underline-offset: 2px; }

/* ---- footer ---- */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: auto;
}

.site-footer .bar {
  padding-block: 1.5rem 2.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

body { display: flex; flex-direction: column; min-height: 100vh; }