/* ==========================================================================
   SUTRAKALPA — Design & Motion Studio
   Editorial construction-sheet aesthetic.
   ========================================================================== */

:root {
  --paper: #F6F2EB;
  --ink: #111111;
  --vermillion: #C7492E;
  --ultramarine: #2454FF;
  --brass: #B38A3D;

  --ink-40: rgba(17,17,17,0.40);
  --ink-25: rgba(17,17,17,0.25);
  --ink-15: rgba(17,17,17,0.13);
  --ink-08: rgba(17,17,17,0.07);

  --font-display: 'Cormorant Garamond', 'Noto Serif Devanagari', serif;
  --font-sans: 'Space Grotesk', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --frame-inset: 22px;
  --edge-pad: clamp(20px, 4vw, 56px);
  --section-gap: clamp(64px, 9vw, 128px);

  --ease-organic: cubic-bezier(.22,.61,.36,1);
}

@media (min-width: 1600px){
  :root{ --frame-inset: 28px; }
}

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

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.skip-link{
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--ink); color: var(--paper); padding: 12px 18px; font-family: var(--font-mono); font-size: 0.75rem;
}
.skip-link:focus{ left: var(--edge-pad); top: var(--edge-pad); }

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

.mono { font-family: var(--font-mono); }

/* ---------- ambient grain ---------- */
.grain{
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.05; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 180px 180px;
}

/* ---------- outer frame ---------- */
.frame{
  position: relative;
  z-index: 1;
  margin: var(--frame-inset);
  min-height: calc(100vh - (var(--frame-inset) * 2));
  border: 1px solid var(--ink-15);
  padding: 0 var(--edge-pad) 0;
}

.corner-mark{
  position: fixed; width: 8px; height: 8px; background: var(--ink); z-index: 5; pointer-events: none;
}
.corner-mark--bl{ left: calc(var(--frame-inset) - 1px); bottom: calc(var(--frame-inset) - 1px); }
.corner-mark--br{ right: calc(var(--frame-inset) - 1px); bottom: calc(var(--frame-inset) - 1px); }

/* registration / crosshair marks */
.reg-mark{ position: absolute; width: 34px; height: 34px; pointer-events: none; opacity: 0.55; }
.reg-mark--tl{ top: 8px; left: 0; border-left: 1px solid var(--ink-25); border-top: 1px solid var(--ink-25); }
.reg-mark--tl::after, .reg-mark--tr::after{ content:""; position:absolute; width:1px; height:1px; }
.reg-mark--tr{ top: 8px; right: 0; border-right: 1px solid var(--ink-25); border-top: 1px solid var(--ink-25); }

.reg-mark--corner{ position: absolute; top: -10px; left: -10px; width: 22px; height: 22px; border-top: 1px solid var(--ink-25); border-left: 1px solid var(--ink-25); opacity: 0.6; }
.reg-mark--shell{ top: auto; bottom: -10px; right: -10px; left: auto; border: none; border-bottom: 1px solid var(--ink-25); border-right: 1px solid var(--ink-25); }

.reg-mark--crosshair{
  position: relative; display: inline-block; width: 14px; height: 14px; opacity: 0.5; flex-shrink: 0;
}
.reg-mark--crosshair::before, .reg-mark--crosshair::after{
  content: ""; position: absolute; background: var(--ink);
}
.reg-mark--crosshair::before{ left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-50%); }
.reg-mark--crosshair::after{ top: 50%; left: 0; height: 1px; width: 100%; transform: translateY(-50%); }

.sq-mark{ width: 6px; height: 6px; background: var(--ink); flex-shrink: 0; }

/* edge vertical labels */
.edge-label{
  position: absolute; top: 50%; font-size: 0.62rem; letter-spacing: 0.22em; color: var(--ink-40);
  writing-mode: vertical-rl; white-space: nowrap; margin: 0; pointer-events: none;
}
.edge-label--left{ left: calc(var(--edge-pad) * -0.15); transform: translateY(-50%) rotate(180deg); }
.edge-label--right{ right: calc(var(--edge-pad) * -0.15); transform: translateY(-50%); }

/* micro annotation notes scattered around */
.micro-note{
  position: absolute; font-size: 0.62rem; letter-spacing: 0.18em; color: var(--ink-40); pointer-events: none;
}
.micro-note--rhythm{ bottom: 6%; right: 1%; }
.micro-note--system{ top: 4%; left: 0; }
.micro-note--form{ bottom: 2%; right: 0; }
.micro-note--anchor{ position: static; display: block; margin-top: 10px; text-align: center; font-size: 0.55rem; white-space: nowrap; }
.micro-note--grid{ top: -22px; left: 2px; }
.micro-note--drawn{ position: static; margin-top: 10px; font-size: 0.58rem; letter-spacing: 0.14em; color: var(--ink-40); }

/* ---------- topbar ---------- */
.topbar{
  position: relative; z-index: 55;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; gap: 24px;
  padding-top: 28px;
}
.wordmark{ font-family: var(--font-sans); font-weight: 600; font-size: 0.92rem; letter-spacing: 0.06em; margin: 0; }
.wordmark__sub{ font-size: 0.6rem; letter-spacing: 0.16em; color: var(--ink-40); margin-top: 4px; }

.topbar__mark{
  justify-self: center; display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 0.6rem; letter-spacing: 0.2em; color: var(--ink-40);
}
.tick{ width: 1px; height: 8px; background: var(--ink-25); }

.topbar__meta{ justify-self: end; display: flex; align-items: center; gap: 28px; }
.topbar__est{ font-size: 0.66rem; letter-spacing: 0.14em; display: flex; align-items: center; gap: 8px; }

.dot{ display: inline-block; width: 6px; height: 6px; border-radius: 50%; }
.dot--vermillion{ background: var(--vermillion); }
.dot--ultramarine{ background: var(--ultramarine); }
.dot--brass{ background: var(--brass); }
.dot--ink{ background: var(--ink); }

.menu-btn{ position: relative; z-index: 51; display: flex; align-items: center; gap: 10px; font-size: 0.68rem; letter-spacing: 0.18em; }
.menu-btn__grid{ display: grid; grid-template-columns: repeat(3, 3px); grid-template-rows: repeat(2, 3px); gap: 2.5px; }
.menu-btn__grid i{ width: 3px; height: 3px; background: var(--ink); border-radius: 50%; display: block; }

.site-nav{
  position: fixed; inset: 0; z-index: 50; background: var(--paper);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transform: translateY(-8px);
  transition: opacity .45s var(--ease-organic), transform .45s var(--ease-organic);
}
.site-nav[data-open="true"]{ opacity: 1; pointer-events: auto; transform: translateY(0); }
.site-nav__list{ display: flex; flex-direction: column; gap: 22px; text-align: center; }
.site-nav__list a{
  font-family: var(--font-display); font-size: clamp(1.8rem, 5vw, 3.2rem); display: flex; align-items: baseline; gap: 14px;
  justify-content: center; transition: color .25s ease;
}
.site-nav__list a span{ font-family: var(--font-mono); font-size: 0.65rem; color: var(--ink-40); letter-spacing: 0.1em; }
.site-nav__list a:hover{ color: var(--vermillion); }

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position: relative; z-index: 2;
  padding-top: clamp(40px, 7vw, 88px);
  padding-bottom: clamp(24px, 4vw, 48px);
  text-align: center;
}
.headline{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3.6rem, 13.4vw, 12.6rem);
  line-height: 0.86;
  letter-spacing: -0.01em;
  color: var(--ink);
  position: relative;
  z-index: 3;
  white-space: nowrap; /* one word — never wrap; JS shrinks it to fit instead */
  max-width: 100%;
}

.pt{ position: absolute; width: 0; height: 0; pointer-events: none; }

/* ============================================================
   DUALITY
   ============================================================ */
.duality{
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: minmax(140px, 15%) 1fr auto 1fr minmax(140px, 15%);
  column-gap: clamp(20px, 3vw, 44px);
  align-items: start;
  padding-top: clamp(28px, 5vw, 56px);
}

.art{ margin: 0; position: relative; grid-row: 1 / span 2; }
.art--sutra{ grid-column: 1; align-self: start; margin-top: 8px; }
.art--kalpa{ grid-column: 5; align-self: start; margin-top: 8px; }
.art__svg{ width: 100%; height: auto; aspect-ratio: 5 / 6; }
.art__square{ position: absolute; width: 34%; z-index: -1; aspect-ratio: 1; }
.art__square--brass{ background: var(--brass); opacity: 0.85; bottom: -10%; left: -12%; }
.art__square--ultramarine{ background: var(--ultramarine); opacity: 0.18; top: -8%; left: -10%; width: 46%; }

.col{ grid-row: 1; padding-top: 2px; }
.col--sutra{ grid-column: 2; text-align: left; }
.col--kalpa{ grid-column: 4; text-align: right; }

.badge{
  display: inline-flex; align-items: center; gap: 8px; font-size: 0.72rem; letter-spacing: 0.14em; color: var(--ink-40); margin-bottom: 14px;
}
.badge--right{ flex-direction: row-reverse; }

.sanskrit{
  font-family: 'Noto Serif Devanagari', var(--font-display), serif;
  font-weight: 600;
  font-size: clamp(3rem, 6.2vw, 5.4rem);
  line-height: 1;
  margin: 0 0 18px;
}
.sanskrit--sutra{ color: var(--vermillion); }
.sanskrit--kalpa{ color: var(--ultramarine); }

.label{ font-size: 0.82rem; letter-spacing: 0.2em; margin-bottom: 14px; }
.label--vermillion{ color: var(--vermillion); }
.label--ultramarine{ color: var(--ultramarine); }

.col__body{
  font-family: var(--font-display); font-size: clamp(1.05rem, 1.4vw, 1.3rem); line-height: 1.35; max-width: 220px;
}
.col--kalpa .col__body{ margin-left: auto; }

.center-x{
  grid-column: 3; grid-row: 1; justify-self: center; position: relative;
  width: clamp(90px, 9vw, 150px); aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
  margin-top: clamp(10px, 3vw, 40px);
}
.center-x__ring{
  position: absolute; inset: 0; border-radius: 50%; border: 1px dashed var(--ink-25);
}
.center-x__glyph{ font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.6rem); color: var(--ink); }

.thesis{
  grid-column: 2 / 5; grid-row: 3;
  font-family: var(--font-display); font-style: italic; font-weight: 500;
  font-size: clamp(1.6rem, 3.4vw, 2.6rem); line-height: 1.28;
  text-align: center; color: var(--ink);
  margin-top: clamp(40px, 6vw, 76px);
}
.thesis em{ font-style: italic; }
.thesis--vermillion{ color: var(--vermillion); }
.thesis--ultramarine{ color: var(--ultramarine); }

.mission{
  grid-column: 1 / -1; grid-row: 4;
  max-width: 640px; margin: clamp(22px, 3vw, 34px) auto 0;
  text-align: center; font-size: 0.72rem; letter-spacing: 0.06em; line-height: 1.9; color: rgba(17,17,17,0.62);
}

/* ============================================================
   MANIFESTO
   ============================================================ */
.manifesto{
  position: relative; z-index: 2;
  max-width: 760px; margin: var(--section-gap) auto 0;
  text-align: center;
}
.manifesto__lines{
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(1.2rem, 2.2vw, 1.7rem); line-height: 1.55; color: var(--ink);
  margin-bottom: clamp(22px, 3vw, 34px);
}
.manifesto__lines--sub{ color: rgba(17,17,17,0.72); font-size: clamp(1.05rem, 1.8vw, 1.35rem); }
.manifesto__lines--closing{ color: var(--ink); font-style: normal; font-weight: 500; }
.i-vermillion{ color: var(--vermillion); font-style: italic; }
.i-ultramarine{ color: var(--ultramarine); font-style: italic; }

/* ============================================================
   SERVICES
   ============================================================ */
.services{
  position: relative; z-index: 2;
  margin-top: var(--section-gap);
  border-top: 1px solid var(--ink-15);
  border-bottom: 1px solid var(--ink-15);
  padding: clamp(18px, 2.6vw, 30px) 0;
}
.tick-corner{ position: absolute; width: 10px; height: 10px; }
.tick-corner--tl{ top: -1px; left: 0; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.tick-corner--tr{ top: -1px; right: 0; border-top: 1px solid var(--ink); border-right: 1px solid var(--ink); }
.tick-corner--bl{ bottom: -1px; left: 0; border-bottom: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.tick-corner--br{ bottom: -1px; right: 0; border-bottom: 1px solid var(--ink); border-right: 1px solid var(--ink); }

.services__list{
  display: grid; grid-template-columns: repeat(6, 1fr);
}
.services__list li{
  display: flex; align-items: center; gap: 12px;
  padding: 4px clamp(10px, 1.6vw, 22px);
  border-left: 1px solid var(--ink-15);
}
.services__list li:first-child{ border-left: 0; padding-left: 0; }
.services__list li:last-child{ padding-right: 0; }
.services__icon{ width: 22px; height: 22px; color: var(--ink-40); flex-shrink: 0; }
.services__list span{ font-size: 0.66rem; letter-spacing: 0.05em; line-height: 1.4; }

/* ============================================================
   LOWER / STUDIO DATA
   ============================================================ */
.lower{
  position: relative; z-index: 2;
  margin-top: var(--section-gap);
  display: grid;
  grid-template-columns: minmax(200px, 26%) 1fr;
  column-gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.art--shell{ grid-column: 1; position: relative; }
.art__svg--shell{ aspect-ratio: 1; }
.art__square--gold{ background: var(--brass); width: 40%; top: -12%; right: -14%; opacity: 0.9; z-index: -1; }
.art__square--blue-sm{ background: var(--ultramarine); width: 22%; bottom: -8%; left: -8%; z-index: 2; opacity: 0.92; }

.system-data{
  grid-column: 2;
  display: flex; flex-direction: column; align-items: flex-end; text-align: right; gap: 16px;
  padding-top: 6px;
}
.palette-dots{ display: flex; gap: 10px; }
.palette-dots .dot{ width: 8px; height: 8px; }
.system-data__frame{ font-size: 0.7rem; letter-spacing: 0.14em; color: var(--ink-40); }
.system-data__concept{ font-size: 0.72rem; letter-spacing: 0.06em; line-height: 1.8; color: var(--ink); }
.system-data__para{ font-size: 0.66rem; letter-spacing: 0.04em; line-height: 1.9; color: rgba(17,17,17,0.6); max-width: 260px; }

.radar{
  grid-column: 2; justify-self: end;
  margin-top: clamp(24px, 4vw, 44px);
  display: flex; align-items: center; gap: 16px;
}
.radar__svg{ width: clamp(96px, 9vw, 140px); }
.radar__coords{ font-size: 0.62rem; letter-spacing: 0.05em; color: var(--ink-40); line-height: 1.6; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact{
  position: relative; z-index: 2;
  text-align: center;
  margin-top: var(--section-gap);
  padding-bottom: clamp(50px, 7vw, 84px);
}
.contact__eyebrow{ font-size: 0.66rem; letter-spacing: 0.22em; color: var(--ink-40); margin-bottom: 18px; }
.contact__eyebrow + .contact__eyebrow{ margin-top: 46px; }
.contact__email{ font-family: var(--font-display); font-size: clamp(1.9rem, 4.4vw, 3.1rem); margin-bottom: 46px; white-space: nowrap; max-width: 100%; display: inline-block; }
.contact__email a{ border-bottom: 1px solid var(--ink-15); transition: border-color .3s ease, color .3s ease; padding-bottom: 4px; }
.contact__email a:hover{ color: var(--vermillion); border-color: var(--vermillion); }
.contact__social{ display: flex; justify-content: center; gap: 32px; font-size: 0.7rem; letter-spacing: 0.14em; }
.contact__social a{ transition: color .25s ease; }
.contact__social a:hover{ color: var(--ultramarine); }
.contact__signature{
  font-family: var(--font-display); font-style: italic; color: var(--ink-40);
  font-size: 0.9rem; margin-top: 56px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.bottom{
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: end;
  padding: 0 0 clamp(18px, 3vw, 30px);
}
.bottom__note{ display: flex; align-items: center; gap: 12px; }
.bottom__note p{ font-size: 0.6rem; letter-spacing: 0.06em; line-height: 1.6; color: var(--ink-40); }

.scroll-cue{ justify-self: center; display: flex; }
.scroll-cue svg{ width: 22px; }
.scroll-cue__dot{ animation: scrollDot 2.2s ease-in-out infinite; transform-origin: 12px 12px; }
@keyframes scrollDot{
  0%{ transform: translateY(0); opacity: 1; }
  60%{ transform: translateY(14px); opacity: 0.2; }
  61%{ transform: translateY(0); opacity: 0; }
  80%{ opacity: 1; }
  100%{ transform: translateY(0); opacity: 1; }
}

.bottom__idea{ justify-self: end; font-size: 0.6rem; letter-spacing: 0.14em; color: var(--ink-40); }

@media (prefers-reduced-motion: reduce){
  .scroll-cue__dot{ animation: none; }
}

/* ============================================================
   THREAD SVG (behind headline, above grain)
   ============================================================ */
#thread-svg{
  position: absolute; top: 0; left: 0; z-index: 1;
  width: 100%; pointer-events: none;
}
#thread-svg path{
  fill: none; stroke-linecap: round; stroke-linejoin: round;
  transition: stroke 1.4s ease;
}
#thread-svg .thread-node{
  transition: fill 1.4s ease;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1180px){
  .headline{ font-size: clamp(3.2rem, 15vw, 9rem); }
  .services__list{ grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
  .services__list li:nth-child(4){ border-left: 0; }
  .services__list li{ border-bottom: 1px solid var(--ink-15); padding-bottom: 18px; }
  .services__list li:nth-child(4), .services__list li:nth-child(5), .services__list li:nth-child(6){ border-bottom: 0; }
}

@media (max-width: 1024px){
  .duality{
    grid-template-columns: 1fr 1fr;
    row-gap: 32px;
  }
  .art--sutra{ grid-column: 1; grid-row: 3; margin-top: 20px; }
  .art--kalpa{ grid-column: 2; grid-row: 3; margin-top: 20px; }
  .col--sutra{ grid-column: 1; grid-row: 1; }
  .col--kalpa{ grid-column: 2; grid-row: 1; }
  .center-x{ display: none; }
  .thesis{ grid-column: 1 / -1; grid-row: 2; margin-top: 8px; }
  .mission{ grid-column: 1 / -1; grid-row: 4; }

  .lower{ grid-template-columns: 1fr; row-gap: 40px; }
  .art--shell{ max-width: 300px; }
  .system-data{ align-items: flex-start; text-align: left; }
  .system-data__para{ max-width: 100%; }
  .radar{ justify-self: start; margin-left: 0; }
}

@media (max-width: 860px){
  .edge-label{ display: none; }
  .topbar{ grid-template-columns: 1fr auto; row-gap: 10px; }
  .topbar__mark{ display: none; }
  .headline{ font-size: clamp(3rem, 17vw, 7rem); }
  .services__list{ grid-template-columns: repeat(2, 1fr); }
  .services__list li{ border-left: 0; }
  .services__list li:nth-child(odd){ border-right: 1px solid var(--ink-15); }
}

@media (max-width: 640px){
  :root{ --frame-inset: 14px; --edge-pad: 18px; }
  .frame{ padding-left: var(--edge-pad); padding-right: var(--edge-pad); }
  .headline{ font-size: clamp(2.6rem, 18vw, 5rem); letter-spacing: -0.01em; }
  .duality{ grid-template-columns: 1fr; }
  .art--sutra, .art--kalpa, .col--sutra, .col--kalpa{ grid-column: 1; }
  .art--sutra{ grid-row: 2; }
  .col--sutra{ grid-row: 1; }
  .art--kalpa{ grid-row: 4; margin-top: 32px; }
  .col--kalpa{ grid-row: 3; margin-top: 32px; text-align: left; }
  .col--kalpa .col__body{ margin-left: 0; }
  .badge--right{ flex-direction: row; }
  .thesis{ grid-row: 5; margin-top: 40px; }
  .mission{ grid-row: 6; }
  .art{ max-width: 220px; }

  .contact__eyebrow + .contact__eyebrow{ margin-top: 36px; }
  .bottom{ grid-template-columns: 1fr; justify-items: center; row-gap: 18px; text-align: center; }
  .bottom__note{ flex-direction: column; gap: 8px; }
  .bottom__idea{ justify-self: center; }
}