/* ============================================================
   D.intelligence Design System v2026 — Stylesheet
   Evolution of 2025 Edition + Brand Guide v1.2
   ============================================================ */

/* -------- Fonts -------- */
@font-face {
  font-family: 'DM Sans';
  src: url('assets/fonts/DMSans-Regular.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('assets/fonts/DMSans-Italic.ttf') format('truetype');
  font-weight: 400; font-style: italic; font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('assets/fonts/DMSans-Medium.ttf') format('truetype');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('assets/fonts/DMSans-Bold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Apple SD Gothic Neo';
  src: url('assets/fonts/AppleSDGothicNeoL.ttf') format('truetype');
  font-weight: 300; font-display: swap;
}
@font-face {
  font-family: 'Apple SD Gothic Neo';
  src: url('assets/fonts/AppleSDGothicNeoM.ttf') format('truetype');
  font-weight: 500; font-display: swap;
}
@font-face {
  font-family: 'Apple SD Gothic Neo';
  src: url('assets/fonts/AppleSDGothicNeoB.ttf') format('truetype');
  font-weight: 700; font-display: swap;
}
@font-face {
  font-family: 'Apple SD Gothic Neo';
  src: url('assets/fonts/AppleSDGothicNeoEB.ttf') format('truetype');
  font-weight: 800; font-display: swap;
}
@font-face {
  font-family: 'Apple SD Gothic Neo';
  src: url('assets/fonts/AppleSDGothicNeoH.ttf') format('truetype');
  font-weight: 900; font-display: swap;
}

/* -------- Tokens -------- */
:root {
  --beige: #E5E1D2;
  --beige-soft: #EFEBDE;
  --brown: #231815;
  --brown-soft: #2E2420;
  --olive: #CEDC00;
  --olive-soft: #E5EE7A;
  --blue: #0075C0;
  --blue-soft: #4DA3D6;
  --black: #000000;
  --gray: #727171;
  --gray-light: #BFBFBF;
  --gray-bg: #F2F2F2;
  --warm-gray: #C8C4B8;
  --warm-gray-soft: #DAD6CB;
  --white: #FFFFFF;

  --font-en: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-kr: 'Apple SD Gothic Neo', 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', 'Menlo', monospace;
}

/* -------- Stage base -------- */
deck-stage {
  --bg: var(--white);
  --stage-bg: #0a0a0a;
}

section[data-screen-label] {
  background: var(--white);
  color: var(--brown);
  font-family: var(--font-en);
  position: relative;
  overflow: hidden;
  width: 1920px;
  height: 1080px;
  box-sizing: border-box;
}

/* -------- Slide chrome: header bar + footer -------- */
.s-header {
  position: absolute;
  top: 56px;
  left: 96px;
  right: 96px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--warm-gray);
  text-transform: uppercase;
  z-index: 5;
}
.s-header .s-sys {
  color: var(--warm-gray);
}
.s-header .s-section-id {
  color: var(--gray);
  font-weight: 500;
  letter-spacing: 0.12em;
}

.s-footer {
  position: absolute;
  bottom: 56px;
  left: 96px;
  right: 96px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--gray);
  z-index: 5;
}
.s-footer .s-tag { font-style: italic; letter-spacing: 0.02em; color: var(--brown); opacity: 0.55; }
.s-footer .s-page { font-weight: 500; letter-spacing: 0.08em; }

.s-three-dots {
  position: absolute;
  top: 56px;
  right: 96px;
  display: flex;
  gap: 10px;
  z-index: 6;
}
.s-three-dots i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brown);
  display: block;
}
.s-three-dots.olive i { background: var(--olive); }
.s-three-dots.beige i { background: var(--warm-gray); }
.s-three-dots.white i { background: var(--white); }

/* -------- Cover / Section dividers --------
   These selectors share specificity with the base section[data-screen-label]
   rule above (0,1,1). The base rule sets background:white; these must be
   equally-or-more specific to win. Use section.s-cover etc.
   ---------------------------------------------------------------- */
section.s-cover {
  background: var(--beige);
}
section.s-section {
  background: var(--beige);
}
section.s-dark {
  background: var(--brown);
  color: var(--beige);
}
section.s-dark .s-header,
section.s-dark .s-footer { color: var(--warm-gray); }
section.s-dark .s-footer .s-tag { color: var(--beige); opacity: 0.6; }

/* -------- Section title with vertical-line accent -------- */
.section-title-block {
  position: absolute;
  left: 96px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 36px;
}
.v-line {
  width: 1px;
  background: var(--gray);
  align-self: stretch;
  flex-shrink: 0;
}
.s-section .v-line { background: var(--warm-gray); }
.s-dark .v-line { background: var(--warm-gray); opacity: 0.5; }

.section-title-block .eyebrow {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 28px;
}
.s-dark .section-title-block .eyebrow { color: var(--warm-gray); }

.section-title-block .num {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--olive);
  margin-bottom: 24px;
}
.section-title-block h1 {
  font-family: var(--font-en);
  font-size: 112px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--brown);
  margin: 0;
}
.s-dark .section-title-block h1 { color: var(--beige); }

.section-title-block .kr {
  font-family: var(--font-kr);
  font-size: 32px;
  font-weight: 500;
  color: var(--brown);
  margin-top: 28px;
  letter-spacing: -0.01em;
}
.s-dark .section-title-block .kr { color: var(--warm-gray); }

.section-title-block .desc {
  font-family: var(--font-en);
  font-size: 18px;
  line-height: 1.55;
  color: var(--gray);
  max-width: 520px;
  margin-top: 36px;
}

/* -------- Content slides -------- */
.content-title {
  font-family: var(--font-en);
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--brown);
  line-height: 1.05;
  margin: 0;
}
.content-title .module-code {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--olive);
  vertical-align: top;
  margin-right: 18px;
  padding-top: 12px;
}
.content-subtitle {
  font-family: var(--font-en);
  font-size: 18px;
  line-height: 1.5;
  color: var(--gray);
  margin: 16px 0 0;
  max-width: 1000px;
}
.content-kr {
  font-family: var(--font-kr);
  font-weight: 500;
  color: var(--brown);
}

.content-body {
  position: absolute;
  top: 220px;
  left: 96px;
  right: 96px;
  bottom: 140px;
}

/* -------- Utilities -------- */
.mono { font-family: var(--font-mono); }
.hairline { border-top: 1px solid var(--gray-light); }
.divider { height: 1px; background: var(--gray-light); }
.uppercase-label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
}

/* swatch helpers */
.swatch {
  border: 1px solid var(--gray-light);
  border-radius: 0;
  position: relative;
}

/* Card */
.card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  padding: 28px;
}
.card.flat { background: var(--gray-bg); border: none; }

/* Tag pill */
.tag {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--brown);
  color: var(--brown);
}
.tag.di { border-color: var(--blue); color: var(--blue); }
.tag.md { border-color: var(--brown); color: var(--brown); }
.tag.mpo { border-color: var(--olive); color: #8a9400; background: rgba(206,220,0,0.12); }
.tag.bvt { border-color: var(--brown); color: var(--white); background: var(--brown); }

/* phase badge */
.phase-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.phase-badge .num {
  font-size: 12px;
  background: var(--brown);
  color: var(--beige);
  padding: 3px 8px;
  letter-spacing: 0.12em;
}

/* Tweaks panel slot */
#tweaks-root { z-index: 9999; }