/* ===================================================================
   NUPIA Design System · v1
   Tokens + base components shared across all pages.
   Import: <link rel="stylesheet" href="/assets/nupia-ds.css">
   =================================================================== */

:root {
  /* ── Color · neutrals ── */
  --nupia-black:    #0a0908;
  --nupia-fg:       #1a1714;
  --nupia-fg-mid:   rgba(10,9,8,0.55);
  --nupia-fg-soft:  rgba(10,9,8,0.30);
  --nupia-fg-faint: rgba(10,9,8,0.16);
  --nupia-bg:       #faf8f3;
  --nupia-bg-warm:  #f5f1e8;
  --nupia-bg-paper: #fcfaf5;
  --nupia-cream:    #ebe6db;
  --nupia-line:     rgba(10,9,8,0.10);
  --nupia-line-soft: rgba(10,9,8,0.06);

  /* ── Color · accent ── */
  --nupia-pink:  #f7b4ce;
  --nupia-gold:  #d4b478;
  --nupia-blush: #f5d4a8;

  /* ── Dark mode (used in dark sections) ── */
  --nupia-dark-bg:      #0a0908;
  --nupia-dark-fg:      #faf8f3;
  --nupia-dark-fg-mid:  rgba(250,248,243,0.65);
  --nupia-dark-fg-soft: rgba(250,248,243,0.42);
  --nupia-dark-line:    rgba(250,248,243,0.18);

  /* ── Typography ── */
  --display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --serif:   'Instrument Serif', 'Times New Roman', Georgia, serif;
  --mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --script:  'Pinyon Script', 'Snell Roundhand', cursive;

  /* ── Spacing scale (responsive) ── */
  --sp-1: clamp(4px, 0.4vw, 6px);
  --sp-2: clamp(8px, 0.9vw, 12px);
  --sp-3: clamp(14px, 1.5vw, 20px);
  --sp-4: clamp(20px, 2.2vw, 32px);
  --sp-5: clamp(32px, 3.5vw, 50px);
  --sp-6: clamp(48px, 6vw, 80px);
  --sp-7: clamp(72px, 9vh, 110px);
  --sp-8: clamp(96px, 13vh, 160px);

  /* ── Page padding ── */
  --pad-x: clamp(20px, 4vw, 60px);

  /* ── Radii ── */
  --r-xs:   2px;
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   14px;
  --r-xl:   22px;
  --r-pill: 999px;

  /* ── Easing ── */
  --ease:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-in:  cubic-bezier(0.55, 0.06, 0.68, 0.19);

  /* ── Shadows ── */
  --shadow-sm: 0 4px 12px -2px rgba(10,9,8,0.08);
  --shadow-md: 0 20px 40px -10px rgba(10,9,8,0.16);
  --shadow-lg: 0 50px 100px -22px rgba(10,9,8,0.28);
  --shadow-xl: 0 80px 140px -32px rgba(10,9,8,0.34);

  /* ── Z-index scale ── */
  --z-nav:    50;
  --z-modal:  100;
  --z-toast:  150;
}

/* ── Base reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--nupia-fg);
  background: var(--nupia-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, video, picture { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ===================================================================
   TYPOGRAPHY UTILITIES
   =================================================================== */
.ds-eyebrow {
  font-family: var(--mono);
  font-size: clamp(9px, 0.7vw, 11px);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--nupia-fg-mid);
}
.ds-eyebrow--rule {
  display: inline-flex; align-items: center; gap: 14px;
}
.ds-eyebrow--rule::before,
.ds-eyebrow--rule::after {
  content: ""; width: 28px; height: 1px;
  background: var(--nupia-fg-soft);
}

.ds-h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(48px, 8vw, 120px);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--nupia-fg);
  margin: 0;
}
.ds-h1 em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }

.ds-h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(32px, 5vw, 72px);
  line-height: 1.0;
  letter-spacing: -0.035em;
  color: var(--nupia-fg);
  margin: 0;
}
.ds-h2 em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.005em; }

.ds-h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 36px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--nupia-fg);
  margin: 0;
}
.ds-h3 em { font-family: var(--serif); font-style: italic; font-weight: 400; }

.ds-lead {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(16px, 1.4vw, 22px);
  line-height: 1.5;
  color: var(--nupia-fg-mid);
  margin: 0;
}
.ds-body {
  font-family: var(--body);
  font-size: clamp(14px, 1vw, 16px);
  line-height: 1.65;
  color: var(--nupia-fg-mid);
}

/* ===================================================================
   BUTTONS
   =================================================================== */
.ds-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 30px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.ds-btn .arrow { transition: transform 0.3s var(--ease); }
.ds-btn:hover .arrow { transform: translateX(4px); }

.ds-btn--primary {
  background: var(--nupia-fg);
  color: var(--nupia-bg);
  border-color: var(--nupia-fg);
}
.ds-btn--primary:hover {
  background: var(--nupia-black);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(10,9,8,0.22);
}

.ds-btn--ghost {
  background: transparent;
  color: var(--nupia-fg);
  border-color: rgba(10,9,8,0.18);
}
.ds-btn--ghost:hover {
  background: var(--nupia-fg);
  color: var(--nupia-bg);
  border-color: var(--nupia-fg);
}

.ds-btn--light {
  background: var(--nupia-bg);
  color: var(--nupia-fg);
  border-color: var(--nupia-bg);
}
.ds-btn--light:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
}

.ds-btn--sm { padding: 10px 18px; font-size: 10px; gap: 8px; }
.ds-btn--lg { padding: 20px 38px; font-size: 13px; }

/* Inline text link */
.ds-link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--nupia-fg-mid);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
  transition: color 0.24s var(--ease);
}
.ds-link:hover { color: var(--nupia-fg); }

/* ===================================================================
   FORM
   =================================================================== */
.ds-input,
.ds-textarea,
.ds-select {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--body);
  font-size: 14px;
  color: var(--nupia-fg);
  background: var(--nupia-bg-paper);
  border: 1px solid var(--nupia-line);
  border-radius: var(--r-md);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ds-input:focus,
.ds-textarea:focus,
.ds-select:focus {
  outline: none;
  border-color: var(--nupia-fg);
  box-shadow: 0 0 0 3px rgba(10,9,8,0.08);
}
.ds-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--nupia-fg-mid);
  font-weight: 500;
}

/* ===================================================================
   FILTER PILLS
   =================================================================== */
.ds-filter {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid var(--nupia-line);
  border-radius: var(--r-pill);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--nupia-fg-mid);
  cursor: pointer;
  transition: all 0.24s var(--ease);
  white-space: nowrap;
}
.ds-filter:hover {
  border-color: var(--nupia-fg);
  color: var(--nupia-fg);
}
.ds-filter.is-active {
  background: var(--nupia-fg);
  color: var(--nupia-bg);
  border-color: var(--nupia-fg);
}

/* ===================================================================
   TAGS / BADGES
   =================================================================== */
.ds-tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(10,9,8,0.05);
  border-radius: var(--r-xs);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--nupia-fg-mid);
}
.ds-tag--solid {
  background: var(--nupia-fg);
  color: var(--nupia-bg);
}
.ds-badge {
  position: absolute;
  top: 14px; left: 14px;
  padding: 6px 12px;
  background: rgba(0,0,0,0.50);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--r-xs);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.96);
  z-index: 3;
}

/* ===================================================================
   CARDS
   =================================================================== */
.ds-card {
  background: var(--nupia-bg-paper);
  border: 1px solid var(--nupia-line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.ds-card--bordered {
  border: 1px solid var(--nupia-line);
}

/* ===================================================================
   LAYOUT
   =================================================================== */
.ds-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.ds-container--narrow { max-width: 1080px; }
.ds-container--wide { max-width: 1600px; }

.ds-section {
  padding: var(--sp-7) var(--pad-x);
}
.ds-section--xl { padding: var(--sp-8) var(--pad-x); }
.ds-section--dark {
  background: var(--nupia-dark-bg);
  color: var(--nupia-dark-fg);
}
.ds-section--cream { background: var(--nupia-bg-warm); }
.ds-section--paper { background: var(--nupia-bg-paper); }

/* ===================================================================
   GRID
   =================================================================== */
.ds-grid {
  display: grid;
  gap: var(--sp-4);
}
.ds-grid--2 { grid-template-columns: repeat(2, 1fr); }
.ds-grid--3 { grid-template-columns: repeat(3, 1fr); }
.ds-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) {
  .ds-grid--3, .ds-grid--4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .ds-grid--2, .ds-grid--3, .ds-grid--4 { grid-template-columns: 1fr; }
}

/* ===================================================================
   IMAGE FRAME (with hover scale)
   =================================================================== */
.ds-frame {
  position: relative;
  overflow: hidden;
  background: #1a1714;
  border-radius: var(--r-md);
}
.ds-frame img,
.ds-frame video,
.ds-frame .ds-frame-bg {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-out), filter 0.5s;
}
.ds-frame--hover:hover img,
.ds-frame--hover:hover video,
.ds-frame--hover:hover .ds-frame-bg {
  transform: scale(1.04);
}
.ds-frame-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}

/* ===================================================================
   DIVIDER
   =================================================================== */
.ds-divider {
  height: 1px;
  background: var(--nupia-line);
  margin: var(--sp-5) 0;
  border: 0;
}
.ds-divider--dark {
  background: var(--nupia-dark-line);
}

/* ===================================================================
   ACCESSIBILITY
   =================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
:focus-visible {
  outline: 2px solid var(--nupia-fg);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ===================================================================
   REVEAL ON SCROLL (used with IntersectionObserver from nupia-sb.js)
   =================================================================== */
.ds-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.ds-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}