/* ═══════════════════════════════════════
   OASIS Holonic — Stylesheet
   Swiss editorial, AR.S identity
   ═══════════════════════════════════════ */

/* ── RESET ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ── TOKENS ── */
:root {
  /* ── Crouwel-inspired warm gray + orange palette ── */
  --sage: #C4BCB4;
  --orange: #FF6B1A;
  --teal-mid: #1A1A1A;
  --navy: #2C2C2C;
  --cream: #D6D0CA;
  --peach: #E8C9A8;
  --charcoal: #2A2A2A;

  /* ── Semantic mappings ── */
  --bg: #D6D0CA;
  --bg-alt: #C4BCB4;
  --bg-sage: #C4BCB4;
  --white: #EFECE8;
  --black: #2C2C2C;
  --gray: #4A4540;
  --gray-light: #7A746E;
  --gray-lighter: #B8B0A8;
  --gray-bg: #C4BCB4;
  --border: #B8B0A8;
  --orange-pale: rgba(255,107,26,0.08);
  --midnight: #2C2C2C;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --page-max: 1100px;
  --page-pad: 3rem;
}

@media (max-width: 800px) {
  :root { --page-pad: 1.5rem; }
}

/* ── BASE ── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--orange);
  color: var(--white);
}

/* ── HERO → CONTENT EDGE ── */
.hero-fade {
  height: 0;
  margin-top: 0;
}

/* Hide the border + accent bar on the very first section after the fade */
.page > .section:first-child {
  border-top: none;
}
.page > .section:first-child::after {
  display: none;
}

/* ── LAYOUT ── */
.page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

/* ── INLINE CODE ── */
code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.82em;
  background: var(--orange-pale);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--orange);
  letter-spacing: -0.01em;
}

/* ── UTILITY ── */
.vdiv {
  width: 1px;
  align-self: stretch;
  background: var(--border);
  flex-shrink: 0;
}

.idx {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--gray-light);
  vertical-align: super;
  margin-right: 0.2rem;
}


/* ═══════════════════════════════════════
   SCROLL ANIMATIONS
   ═══════════════════════════════════════ */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1s cubic-bezier(0.25, 1, 0.5, 1),
              transform 1s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.85s cubic-bezier(0.25, 1, 0.5, 1),
              transform 0.85s cubic-bezier(0.25, 1, 0.5, 1);
}

.stagger.is-visible > *:nth-child(1)  { opacity: 1; transform: none; transition-delay: 0s; }
.stagger.is-visible > *:nth-child(2)  { opacity: 1; transform: none; transition-delay: 0.06s; }
.stagger.is-visible > *:nth-child(3)  { opacity: 1; transform: none; transition-delay: 0.12s; }
.stagger.is-visible > *:nth-child(4)  { opacity: 1; transform: none; transition-delay: 0.18s; }
.stagger.is-visible > *:nth-child(5)  { opacity: 1; transform: none; transition-delay: 0.24s; }
.stagger.is-visible > *:nth-child(6)  { opacity: 1; transform: none; transition-delay: 0.30s; }
.stagger.is-visible > *:nth-child(7)  { opacity: 1; transform: none; transition-delay: 0.36s; }
.stagger.is-visible > *:nth-child(8)  { opacity: 1; transform: none; transition-delay: 0.42s; }
.stagger.is-visible > *:nth-child(9)  { opacity: 1; transform: none; transition-delay: 0.48s; }
.stagger.is-visible > *:nth-child(10) { opacity: 1; transform: none; transition-delay: 0.54s; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal, .stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}


/* ═══════════════════════════════════════
   NAV
   ═══════════════════════════════════════ */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem var(--page-pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(214,208,202,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: opacity 0.4s;
}

.nav-logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--black);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.72rem;
  color: var(--gray);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.3s;
}

.nav-links a:hover { color: var(--orange); }

.nav-links .nav-btn {
  color: #fff;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border: 1px solid var(--orange);
  border-radius: 3px;
  background: var(--orange);
  transition: all 0.3s;
}

.nav-links .nav-btn:hover {
  background: var(--navy);
  border-color: var(--navy);
}

/* ── Hamburger button (hidden by default, shown on scroll) ── */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 32px;
  height: 24px;
  position: relative;
  z-index: 110;
  flex-direction: column;
  justify-content: space-between;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

/* X state when menu is open */
nav.nav-open .nav-hamburger span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
nav.nav-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}
nav.nav-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ── Collapsed nav state (scrolled) ── */
nav.nav-collapsed .nav-links {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  flex-direction: column;
  align-items: flex-start;
  background: rgba(214,208,202,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 5rem var(--page-pad) 2rem;
  gap: 1.2rem;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1),
              opacity 0.35s ease;
  z-index: 99;
  border-bottom: 1px solid var(--border);
}

nav.nav-collapsed .nav-links a {
  font-size: 1rem;
}

nav.nav-collapsed .nav-links .nav-btn {
  margin-top: 0.5rem;
}

nav.nav-collapsed .nav-hamburger {
  display: flex;
}

nav.nav-collapsed.nav-open .nav-links {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6rem var(--page-pad) 3rem;
  background: #1A1816;
  color: rgba(239, 236, 232, 0.9);
}

.hero-top {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(239, 236, 232, 0.12);
  opacity: 0;
  animation: heroFadeIn 1s ease 0.3s forwards;
}

.hero-title-side {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  position: relative;
  display: inline-block;
  color: rgba(239, 236, 232, 0.9);
}

.hero-title-side .ink-smoke-text {
  position: relative;
  z-index: 2;
  color: transparent;
  transition: color 1.2s ease 2s;
}

.hero-title-side.is-materialized .ink-smoke-text {
  color: var(--black);
}

.hero-title-side canvas.ink-smoke-canvas {
  position: absolute;
  top: -70%;
  left: -30%;
  width: 160%;
  height: 240%;
  z-index: 1;
  pointer-events: none;
}

/* Mesh canvas container */
.hero-mesh {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 calc(-1 * var(--page-pad));
  opacity: 0;
  animation: heroFadeIn 1.5s ease 0.6s forwards;
  overflow: hidden;
}

.mesh-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.mesh-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.mesh-overlay {
  position: absolute;
  bottom: 2.5rem;
  left: 2.5rem;
  right: 2.5rem;
  z-index: 2;
  color: rgba(239, 236, 232, 0.85);
  pointer-events: none;
}

.mesh-overlay .mo-tagline {
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.6;
  max-width: 440px;
  letter-spacing: -0.01em;
}

/* Hero bottom metadata */
.hero-bottom {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  border-top: 1px solid rgba(239, 236, 232, 0.12);
  padding-top: 2rem;
  opacity: 0;
  animation: heroFadeIn 1s ease 0.9s forwards;
}

.hero-bottom .vdiv {
  background: rgba(239, 236, 232, 0.12);
}

.hero-bottom .hb-col {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hb-label {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hb-value {
  font-size: 0.82rem;
  font-weight: 400;
  color: rgba(239, 236, 232, 0.65);
  line-height: 1.5;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}


/* ═══════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════ */

.section {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
  position: relative;
  isolation: isolate;
}

/* Accent bar at section top */
.section::after {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--orange);
}

/* ═══════════════════════════════════════
   FULL-BLEED SECTION MIXIN
   Shared pattern for all colored sections
   ═══════════════════════════════════════ */
.section--dark::before,
.section--charcoal::before,
.section--orange::before,
.section--sage::before,
.section--cream::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  z-index: -1;
}

.section--dark,
.section--charcoal,
.section--orange,
.section--sage,
.section--cream {
  border-top-color: transparent;
}


/* ── SAGE sections (#CCD9D8) — silver gray ── */
.section--sage::before {
  background: var(--bg-sage);
}

.section--sage::after {
  background: var(--orange);
}

.section--sage .sh-num { color: var(--orange); }
.section--sage h2 em { color: var(--orange); }


/* ── CREAM sections (#FFFEDF) — warm ivory ── */
.section--cream::before {
  background: var(--cream);
}

.section--cream::after {
  background: var(--orange);
}

.section--cream .sh-num { color: var(--orange); }
.section--cream h2 em { color: var(--orange); }


/* ═══════════════════════════════════════
   BOLD ORANGE section (#FF3700)
   Prominent, high-impact — white text
   ═══════════════════════════════════════ */
.section--orange::before {
  background: #3A3530;
}

.section--orange::after {
  background: #fff;
}

.section--orange {
  color: rgba(239,236,232,0.92);
  padding: 4rem 0;
}

.section--orange .sh-num {
  color: var(--orange);
}

.section--orange h2 {
  color: rgba(239,236,232,0.95);
}

.section--orange h2 em {
  color: var(--orange);
}

.section--orange .col3-num {
  color: var(--orange);
}

.section--orange .col3-title {
  color: rgba(239,236,232,0.95);
}

.section--orange .col3-desc {
  color: rgba(239,236,232,0.72);
}

.section--orange .vdiv {
  background: rgba(239,236,232,0.15);
}

.section--orange code {
  background: rgba(255,107,26,0.15);
  color: var(--orange);
}

.section--orange .section-head h2 em {
  color: var(--orange);
}

.reveal.is-visible.section--orange .section-head h2 em .ink-smoke-text {
  color: var(--orange);
}


/* ═══════════════════════════════════════
   DARK sections — dark gray
   Kernel, deep content
   ═══════════════════════════════════════ */
.section--dark::before {
  background: #1E1C1A;
}

.section--dark {
  color: #fff;
}

.section--dark::after {
  background: var(--orange);
}

.section--dark .sh-num {
  color: var(--orange);
}

.section--dark h2 {
  color: #fff;
}

.section--dark h2 em {
  color: var(--orange);
}

.section--dark .col3-num {
  color: var(--orange);
}

.section--dark .col3-title {
  color: #fff;
}

.section--dark .col3-desc {
  color: rgba(255,255,255,0.7);
}

.section--dark .vdiv {
  background: rgba(255,255,255,0.15);
}

.section--dark .fb-node {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  color: #fff;
}

.section--dark .fb-node:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--orange);
}

.section--dark .fb-node.active {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}

.section--dark .fb-connector {
  background: rgba(255,255,255,0.2);
}

.section--dark .fb-connector::after {
  color: rgba(255,255,255,0.4);
}

.section--dark code {
  background: rgba(255,107,26,0.15);
  color: var(--orange);
}

.reveal.is-visible.section--dark .section-head h2 em .ink-smoke-text {
  color: var(--orange);
}


/* ═══════════════════════════════════════
   DARK GRAY sections (#1A1A1A)
   Avatar, secondary dark
   ═══════════════════════════════════════ */
.section--charcoal::before {
  background: #38342F;
}

.section--charcoal {
  color: #fff;
}

.section--charcoal::after {
  background: var(--orange);
}

.section--charcoal .sh-num {
  color: var(--orange);
}

.section--charcoal h2 {
  color: #fff;
}

.section--charcoal h2 em {
  color: var(--orange);
}

.section--charcoal .col4-num {
  color: var(--orange);
}

.section--charcoal .col4-title {
  color: #fff;
}

.section--charcoal .col4-desc {
  color: rgba(255,255,255,0.92);
  font-size: 0.85rem;
  line-height: 1.7;
}

.section--charcoal .vdiv {
  background: rgba(255,255,255,0.12);
}

.reveal.is-visible.section--charcoal .section-head h2 em .ink-smoke-text {
  color: var(--orange);
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 2rem;
  margin-bottom: 4rem;
}

.section-head .sh-num {
  font-size: 0.7rem;
  color: var(--orange);
  min-width: 2rem;
  padding-top: 0.6rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.section-head h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
  max-width: 600px;
}

.section-head h2 em {
  font-family: var(--font-serif);
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--orange);
  /* Ink smoke wrapper — the canvas sits behind, text starts hidden */
  position: relative;
  display: inline-block;
}

/* The em text is hidden until the smoke animation reveals it */
.section-head h2 em .ink-smoke-text {
  position: relative;
  z-index: 2;
  color: transparent;
  transition: color 1.2s ease 2s;
}

.reveal.is-visible .section-head h2 em .ink-smoke-text {
  color: var(--orange);
}

/* Canvas overlay for smoke effect */
.section-head h2 em canvas.ink-smoke-canvas {
  position: absolute;
  top: -70%;
  left: -30%;
  width: 160%;
  height: 240%;
  z-index: 1;
  pointer-events: none;
}


/* ── Section intro paragraph ── */
.section-intro {
  max-width: 640px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--gray);
  margin-bottom: 3rem;
}

.section--dark .section-intro,
.section--charcoal .section-intro {
  color: rgba(255,255,255,0.82);
}

.section--orange .section-intro {
  color: rgba(255,255,255,0.9);
}

/* ═══════════════════════════════════════
   DEFINITION BLOCK
   ═══════════════════════════════════════ */

.def-block {
  display: grid;
  grid-template-columns: 1fr 1px 1.8fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.def-etymology {
  font-size: 2.2rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.def-etymology .greek {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
}

.def-etymology .plus {
  color: var(--gray-light);
  font-weight: 300;
  margin: 0 0.15rem;
}

.def-origin {
  font-size: 0.75rem;
  color: var(--gray);
  letter-spacing: 0.03em;
}

.def-right p {
  font-size: 1rem;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.def-right p strong {
  color: var(--orange);
  font-weight: 600;
}


/* ═══════════════════════════════════════
   COLUMN GRIDS
   ═══════════════════════════════════════ */

/* ── 3 col ── */
.col3 {
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr;
  gap: 0 2rem;
}

.col3-item { padding: 1rem 0; }

.col3-num {
  font-size: 0.65rem;
  color: var(--orange);
  margin-bottom: 1.5rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.col3-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
  line-height: 1.25;
}

.col3-desc {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ── 2 col ── */
.col2 {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0 3rem;
}

.col2-item { padding: 1rem 0; }

.col2-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.col2-desc {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ── 4 col ── */
.col4 {
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr 1px 1fr;
  gap: 0 1.5rem;
}

.col4-item { padding: 1rem 0; }

.col4-num {
  font-size: 0.6rem;
  color: var(--orange);
  margin-bottom: 1rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.col4-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
}

.col4-desc {
  font-size: 0.8rem;
  color: var(--gray);
  line-height: 1.6;
}


/* ═══════════════════════════════════════
   CANVAS ANIMATION CONTAINERS
   ═══════════════════════════════════════ */

.anim-canvas {
  width: 100%;
  display: block;
  border-radius: 8px;
}


/* ═══════════════════════════════════════
   RINGS VISUAL (Section 01)
   ═══════════════════════════════════════ */

.rings-container {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 1;
  margin: 0 auto;
}


/* ═══════════════════════════════════════
   KERNEL DIAGRAM (Section 02)
   ═══════════════════════════════════════ */

.kernel-container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
}


/* ═══════════════════════════════════════
   HOLARCHY (Section 03)
   ═══════════════════════════════════════ */

.holarchy-intro {
  display: grid;
  grid-template-columns: 1.6fr 1px 1fr;
  gap: 0 2.5rem;
  margin-bottom: 3.5rem;
}

.holarchy-intro-left p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.88);
  margin-bottom: 1rem;
}

.holarchy-intro-left p strong {
  color: var(--orange);
  font-weight: 600;
}

.holarchy-intro-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.holarchy-intro > .vdiv {
  background: rgba(255,255,255,0.12);
}

.holarchy-mapping-label {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--orange);
  margin-bottom: 0.8rem;
}

.holarchy-mapping {
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.7);
}

.holarchy-mapping strong {
  color: #fff;
  font-weight: 600;
}

.orbit-hero {
  width: 100%;
  max-width: 680px;
  aspect-ratio: 1;
  margin: 0 auto 1rem;
}


/* ═══════════════════════════════════════
   FLOW VISUAL (Section 03)
   ═══════════════════════════════════════ */

.flow-container {
  width: 100%;
  aspect-ratio: 3 / 1;
  margin: 0 auto 1.5rem;
}


/* ═══════════════════════════════════════
   TOOLCHAIN FLOW BAR (Section 04)
   ═══════════════════════════════════════ */

.flow-bar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 2.5rem 0;
  justify-content: center;
  flex-wrap: wrap;
}

.fb-node {
  padding: 0.6rem 1.2rem;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--white);
  transition: all 0.3s;
}

.fb-node:hover { background: var(--orange-pale); border-color: var(--orange); }

.fb-node.active {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}

.fb-connector {
  width: 28px;
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
  position: relative;
}

.fb-connector::after {
  content: '→';
  position: absolute;
  right: -1px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.6rem;
  color: var(--gray-light);
}


/* ═══════════════════════════════════════
   PROVIDERS (Section 05)
   ═══════════════════════════════════════ */

.prov-grid {
  display: grid;
  grid-template-columns: 6rem 1px 1fr;
  gap: 0 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-lighter);
}

.prov-grid:first-of-type { border-top: 1px solid var(--gray-lighter); }

.prov-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-top: 0.1rem;
}

.prov-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.prov-tag {
  font-size: 0.75rem;
  color: var(--gray);
}

.prov-tag::after { content: ','; color: var(--gray-light); }
.prov-tag:last-child::after { content: ''; }


/* ═══════════════════════════════════════
   COMMONS (Section 08)
   Bold keyword blocks, tag chips, CTAs
   ═══════════════════════════════════════ */

.section--commons {
  padding: 5rem 0 4rem;
  border-top-color: transparent;
}

.section--commons::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  z-index: -1;
  background: var(--bg-sage);
}

.section--commons::after {
  background: var(--orange);
}

/* ── Tag chips ── */
.commons-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.commons-tag {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--gray);
  background: rgba(255,255,255,0.35);
  padding: 0.4rem 1.1rem;
  border-radius: 20px;
  letter-spacing: 0.01em;
}

/* ── Bold keyword blocks ── */
.commons-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.commons-kw {
  display: inline-block;
  font-size: clamp(2.4rem, 5.5vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  color: #fff;
  background: var(--orange);
  padding: 0.18em 0.32em;
  border-radius: 0.18em;
  /* entrance animation handled by stagger */
  transform-origin: left center;
}

/* ── Description ── */
.commons-desc {
  max-width: 600px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--gray);
  margin-bottom: 2.5rem;
}

/* ── CTA buttons ── */
.commons-ctas {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.commons-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.75rem 1.6rem;
  border-radius: 28px;
  transition: all 0.25s ease;
  letter-spacing: -0.01em;
}

.commons-btn--primary {
  background: var(--black);
  color: var(--white);
}

.commons-btn--primary:hover {
  background: #1A1816;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(44,44,44,0.25);
}

.commons-btn--secondary {
  background: transparent;
  color: var(--black);
  border: 1.5px solid var(--gray-light);
}

.commons-btn--secondary:hover {
  background: var(--black);
  color: var(--white);
  transform: translateY(-1px);
}

/* ── Footer label ── */
.commons-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--gray-light);
  font-weight: 400;
}

.commons-label-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--black);
}

/* ── Keyword block entrance animation ── */
.commons-keywords .commons-kw {
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1),
              transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.commons-keywords.is-visible .commons-kw:nth-child(1) {
  opacity: 1; transform: none; transition-delay: 0.1s;
}
.commons-keywords.is-visible .commons-kw:nth-child(2) {
  opacity: 1; transform: none; transition-delay: 0.22s;
}
.commons-keywords.is-visible .commons-kw:nth-child(3) {
  opacity: 1; transform: none; transition-delay: 0.34s;
}

/* ── Responsive ── */
@media (max-width: 800px) {
  .commons-kw {
    font-size: clamp(2rem, 10vw, 3.5rem);
  }
  .commons-ctas {
    flex-direction: column;
    gap: 0.6rem;
  }
  .commons-btn {
    justify-content: center;
    text-align: center;
  }
}


/* ═══════════════════════════════════════
   START BUILDING (Section 09)
   ═══════════════════════════════════════ */

.build-intro {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(239,236,232,0.78);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

/* ── Chat input ── */
.build-chat {
  margin-bottom: 2rem;
  max-width: 640px;
}

.build-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 0;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  padding: 0.5rem 0.5rem 0.5rem 1.2rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.build-input-wrap:focus-within {
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.08);
}

.build-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  resize: none;
  min-height: 1.5em;
  max-height: 6em;
  overflow-y: auto;
}

.build-input::placeholder {
  color: rgba(255,255,255,0.4);
}

.build-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.2s, transform 0.15s;
}

.build-submit:hover {
  background: rgba(255,255,255,0.3);
}

.build-submit:active {
  transform: scale(0.93);
}

/* ── Confirmation ── */
.build-confirm {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
  padding: 0.75rem 1.2rem;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
  color: rgba(255,255,255,0.9);
  font-size: 0.88rem;
  animation: buildConfirmIn 0.4s ease;
}

.build-confirm[hidden] { display: none; }

.build-confirm-icon {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
}

@keyframes buildConfirmIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Suggestion chips ── */
.build-suggestions {
  margin-bottom: 1rem;
}

.build-suggestions-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.75rem;
}

.build-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.build-chip {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: rgba(255,255,255,0.85);
  background: rgba(0,0,0,0.18);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 20px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  white-space: nowrap;
}

.build-chip:hover {
  background: rgba(0,0,0,0.35);
  border-color: rgba(255,255,255,0.4);
}

.build-chip:active {
  transform: scale(0.97);
}

/* ── Path cards ── */
.build-card {
  position: relative;
}

.build-link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.01em;
  border-bottom: 1px solid rgba(255,255,255,0.35);
  padding-bottom: 2px;
  transition: border-color 0.3s;
}

.build-link:hover {
  border-color: #fff;
}



/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */

.footer {
  border-top: none;
  padding: 2.5rem 0 3rem;
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr;
  gap: 0 2rem;
  position: relative;
  color: var(--white);
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: calc(100% + 3rem);
  background: #2A2622;
  z-index: -1;
}

.footer .vdiv {
  background: rgba(255,255,255,0.12);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-label {
  font-size: 0.6rem;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.footer-value {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.5;
}

.footer-value a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,107,26,0.3);
  transition: border-color 0.3s, color 0.3s;
}

.footer-value a:hover { border-color: var(--orange); color: var(--orange); }


/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */

@media (max-width: 800px) {
  .hero-top { flex-wrap: wrap; }
  .hero-title-side { font-size: 1.3rem; }
  .hero-bottom { flex-wrap: wrap; gap: 1.25rem; }
  .hero-bottom .vdiv { display: none; }
  .mesh-overlay { flex-wrap: wrap; gap: 1.5rem; }

  .section-head h2 { font-size: 2rem; }

  .def-block { grid-template-columns: 1fr; gap: 2rem; }
  .def-block > .vdiv { display: none; }

  .col3 { grid-template-columns: 1fr; gap: 1.5rem 0; }
  .col3 > .vdiv { display: none; }
  .col3-item { border-bottom: 1px solid var(--gray-lighter); padding-bottom: 1.5rem; }
  .col3-item:last-child { border-bottom: none; }

  .col2 { grid-template-columns: 1fr; gap: 2rem 0; }
  .col2 > .vdiv { display: none; }

  .col4 { grid-template-columns: 1fr 1px 1fr; }

  .holarchy-intro { grid-template-columns: 1fr; gap: 2rem; }
  .holarchy-intro > .vdiv { display: none; }
  .orbit-hero { max-width: 400px; }

  .footer { grid-template-columns: 1fr; gap: 1.5rem 0; }
  .footer > .vdiv { display: none; }

  .flow-bar { gap: 0.25rem; }
  .fb-connector { width: 16px; }

  .prov-grid { grid-template-columns: 1fr; gap: 0.5rem; }
  .prov-grid > .vdiv { display: none; }

  .build-chat { max-width: 100%; }
  .build-chips { gap: 0.4rem; }
  .build-chip { font-size: 0.72rem; padding: 0.35rem 0.8rem; }
}