/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  --ink:   #111111;
  --paper: #F4F2EE;
  --mid:   #333331;   /* darkened: achieves 7:1 on paper, mint, and yellow */

  --pad-x: clamp(32px, 6vw, 96px);

  /* Contextual tokens — override per theme */
  --c-text:    var(--ink);
  --c-mid:     var(--mid);
  --c-accent:  #C52B10;   /* accessible red on light backgrounds — 5.1:1 on paper (large text AAA) */
  --c-divider: rgba(17, 17, 17, 0.12);
}

[data-theme="dark"] {
  --c-text:    var(--paper);
  --c-mid:     rgba(244, 242, 238, 0.82);  /* raised from 0.55 — achieves 7:1 on ink */
  --c-accent:  #F03A1C;                     /* accessible red on dark backgrounds — 4.8:1 on ink (large text AAA) */
  --c-divider: rgba(244, 242, 238, 0.15);
  color: var(--paper);
}

/* Blue section: mid-luminance bg needs full-weight secondary text for AAA */
[data-bg="#0044CC"] {
  --c-mid: var(--paper);
}

/* ============================================================
   RESET & BASE
   ============================================================ */

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

html { scroll-behavior: auto; }

body {
  font-family: 'IBM Plex Sans', sans-serif;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* Skip navigation — visually hidden until focused */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--pad-x);
  z-index: 1000;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 0; }

/* Focus indicators — visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--c-text);
  outline-offset: 4px;
  border-radius: 2px;
}
[data-theme="dark"] :focus-visible {
  outline-color: var(--paper);
}
.project-row:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 0;
}

/* ============================================================
   NOISE TEXTURE
   ============================================================ */

.noise {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  pointer-events: none;
  opacity: 0.13;
}

/* ============================================================
   PAGE BACKGROUND
   Fixed layer — GSAP drives all color transitions.
   ============================================================ */

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-color: var(--paper);
  pointer-events: none;
}

.color-group {
  background: transparent;
  position: relative;
}

/* COLOR BUFFER — empty scroll space so bg finishes transitioning
   before sticky content starts pinning */
.color-buffer {
  height: 40vh;
  pointer-events: none;
}

/* ============================================================
   TYPOGRAPHY SCALE
   ============================================================ */

.display-xl {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(56px, 12vw, 200px);
  line-height: 0.88;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  display: block;
}

.display-l {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(40px, 7.5vw, 130px);
  line-height: 0.91;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  display: block;
}

.display-m {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 4.5vw, 76px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.display-s {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(17px, 2.2vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.005em;
  text-transform: uppercase;
}

.org-hl {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(32px, 6vw, 104px);
  line-height: 0.91;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  display: block;
}

.body-l {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 300;
  font-size: clamp(17px, 1.7vw, 26px);
  line-height: 1.75;
}

.body {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 300;
  font-size: clamp(15px, 1.3vw, 21px);
  line-height: 1.7;
}

.caption {
  font-family: 'IBM Plex Sans', sans-serif;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.essay {
  font-family: 'Source Serif 4', serif;
  font-weight: 500;
  font-style: normal;
  font-size: clamp(18px, 1.7vw, 28px);
  line-height: 1.8;
}

.accent-red { color: var(--c-accent); }
.c-mid      { color: var(--c-mid); }

/* ============================================================
   LINE MASK — headline reveal container
   ============================================================ */

.line-mask {
  display: block;
  overflow: hidden;
}

.line-mask span {
  display: block;
  will-change: transform;
}

/* ============================================================
   HUD
   ============================================================ */

.hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 20px var(--pad-x);
  pointer-events: none;
  opacity: 0;
  transition: color 0.4s ease;
}

.hud__left {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.hud__name,
.hud__tone,
.hud__role,
.hud__section { transition: color 0.35s ease; }

.hud__name {
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hud__tone,
.hud__role,
.hud__section {
  color: var(--mid);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hud--dark .hud__name    { color: var(--paper); }
.hud--dark .hud__tone    { color: rgba(244, 242, 238, 0.72); }
.hud--dark .hud__role    { color: rgba(244, 242, 238, 0.72); }
.hud--dark .hud__section { color: rgba(244, 242, 238, 0.72); }

/* ============================================================
   PANEL SYSTEM

   .panel          = tall scroll container (height = dwell time)
   .panel__content = sticky inner, pins at 100vh while scrolling
   ============================================================ */

.panel {
  position: relative;
}

.panel__content {
  position: sticky;
  top: 0;
  height: 100svh;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(80px, 12vh, 140px) var(--pad-x);
  will-change: transform, filter;
  filter: blur(0px);
}

/* ============================================================
   01 — HERO PANEL
   Bottom-aligned: headline fills upper area, sub-strip at bottom
   ============================================================ */

.panel--hero { height: 100svh; }

.panel__content--hero {
  position: relative;
  justify-content: flex-end;
  gap: clamp(20px, 3vh, 36px);
  padding-bottom: clamp(48px, 8vh, 96px);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  background: transparent;
}

.hero-headline {
  display: flex;
  flex-direction: column;
}

.hero-sub {
  width: 100%;
}

.strip-rule {
  height: 1px;
  background: var(--c-divider);
  margin-bottom: clamp(20px, 3vh, 36px);
}

.strip-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pad-x);
}

.strip-cols p { max-width: none; }

/* ============================================================
   01b — CLARITY STATEMENT PANEL
   Same paper section as identity hero, no color change
   ============================================================ */

.panel--statement { height: 160vh; }

.panel__content--statement {
  align-items: flex-start;
  justify-content: center;
}

.statement-headline {
  display: flex;
  flex-direction: column;
}

/* ============================================================
   02 — LEADERSHIP PANEL
   Two columns: label+headline+image left / body text right
   ============================================================ */

.panel--leadership { height: 160vh; }

.panel__content--leadership {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(48px, 7vw, 96px);
  align-items: stretch;
  padding-top: clamp(80px, 12vh, 140px);
  padding-bottom: clamp(60px, 10vh, 100px);
}

.leadership-left {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.leadership-top {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.intro-label {
  display: block;
  color: var(--c-mid);
  margin-bottom: clamp(16px, 2.5vh, 28px);
  will-change: opacity;
}

.leadership-headline {
  display: flex;
  flex-direction: column;
}

/* Image fills remaining left-col space after headline */
.leadership-image {
  flex: 1;
  min-height: clamp(160px, 26vh, 380px);
  margin-top: clamp(24px, 4vh, 48px);
  width: 100%;
  object-fit: contain;
  object-position: 50% 100%;
  border-radius: 8px;
  display: block;
}

.leadership-right {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: clamp(20px, 3vh, 32px);
  padding-bottom: clamp(8px, 1.5vh, 20px);
}

.body-para {
  will-change: transform, opacity;
}

/* ============================================================
   03 — ORG WORK PANELS (two panels)
   ============================================================ */

/* Panel 1: Entry — label + XL headline, bottom-aligned */
.panel--org-intro { height: 160vh; } /* already correct */

.panel__content--org-intro {
  justify-content: flex-end;
  padding-bottom: clamp(80px, 14vh, 160px);
}

.org-label {
  display: block;
  color: var(--c-mid);
  margin-bottom: clamp(16px, 2.5vh, 28px);
}

.org-intro-lines {
  display: flex;
  flex-direction: column;
}

.org-intro-note {
  color: var(--c-mid);
  margin-top: clamp(20px, 3vh, 32px);
}

/* Panel 2: Diagnosis — two-line statement, vertically centered */
.panel--org-statement { height: 160vh; }

.panel__content--org-statement {
  justify-content: center;
}

.org-diagnosis {
  display: flex;
  flex-direction: column;
}

.org-lines {
  display: flex;
  flex-direction: column;
}

.org-lines--muted .org-hl {
  color: var(--paper);
}

.org-lines--accent { margin-top: 0.1em; }

/* ============================================================
   04 — BELIEFS PANEL
   ONE panel: headline top-left, two-col principles + divider below
   ============================================================ */

.panel--beliefs-full { height: 160vh; }

.panel__content--beliefs-full {
  justify-content: center;
  padding-top: 0;
  gap: clamp(48px, 7vh, 80px);
}

.beliefs-header {
  display: flex;
  flex-direction: column;
}

.beliefs-headline {
  display: flex;
  flex-direction: column;
}

.beliefs-principles {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0 clamp(32px, 5vw, 72px);
  align-items: start;
  width: 100%;
}

.beliefs-divider {
  background: var(--c-divider);
  align-self: stretch;
}

.beliefs-statement {
  font-size: clamp(22px, 2.2vw, 36px);
  line-height: 1.55;
  max-width: 26ch;
}

.belief-col {
  display: flex;
  flex-direction: column;
}

/* ============================================================
   05 + 06 — PRINCIPLE PANELS (Curiosity, The Gap)
   ============================================================ */

.panel--principle { height: 160vh; }

.panel__content--principle {
  justify-content: flex-start;
  padding-top: clamp(80px, 14vh, 160px);
}

#p-delivery .panel__content--principle,
#p-framework .panel__content,
#p-curiosity .panel__content--principle {
  justify-content: center;
  padding-top: 0;
}

.principle-label {
  display: block;
  color: var(--c-mid);
  margin-bottom: clamp(16px, 2.5vh, 28px);
}

.principle-headline {
  display: flex;
  flex-direction: column;
  margin-bottom: clamp(20px, 3vh, 40px);
}

.principle-headline--xl {
  margin-bottom: clamp(24px, 4vh, 48px);
}

.principle-subhead {
  display: flex;
  flex-direction: column;
  margin-bottom: clamp(20px, 3vh, 40px);
}

.principle-body {
  will-change: transform, opacity;
}

.principle-body--narrow {
  max-width: none;
}

/* ============================================================
   05b — VALIDATED DELIVERY — Signal-Based Decision System
   ============================================================ */

.panel--framework { height: 160vh; }

.delivery-table {
  width: 100%;
  border-top: 1px solid var(--c-divider);
  margin-top: clamp(24px, 4vh, 48px);
}

.delivery-phase {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: baseline;
  gap: clamp(12px, 2.5vw, 40px);
  padding: clamp(14px, 2.2vh, 24px) 0;
  border-bottom: 1px solid var(--c-divider);
}

.delivery-phase__intent {
  text-align: right;
}

.delivery-phase--gate .delivery-phase__intent {
  color: var(--c-accent);
}

.gate-marker {
  margin-right: 0.3em;
}

/* ============================================================
   06b — AI PROCESS MATRIX
   Panel C of the Delivery section. Dark background, 6-column
   CSS Grid. Human-judgment cells filled, AI cells outlined.
   Red right-border on gate columns.
   ============================================================ */

.panel--ai-matrix { height: 220vh; }

.panel__content--ai-matrix {
  justify-content: center;
  padding: clamp(48px, 7vh, 96px) clamp(32px, 6vw, 80px);
}

.ai-frame {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4vh, 52px);
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
}

.ai-frame__hd {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ai-frame__thesis {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(13px, 1.2vw, 17px);
  font-weight: 300;
  color: var(--paper);
  opacity: 0.5;
  letter-spacing: 0.02em;
  line-height: 1.6;
  max-width: 52ch;
}

/* Scrollable wrapper for small screens */
.ai-matrix-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* 6-col grid: [label] + 5 phases */
.ai-matrix {
  display: grid;
  grid-template-columns: 90px repeat(5, 1fr);
  grid-auto-rows: auto;
  gap: 2px;
  min-width: 560px;
}

/* ── Phase header cells ── */
.ai-m__corner { /* empty top-left */ }

.ai-m__ph {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px 18px;
  border-bottom: 1px solid rgba(244, 242, 238, 0.10);
  position: relative;
}

.ai-m__ph--gate {
  border-right: 1.5px solid var(--c-accent);
}

.ai-m__pnum {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(9px, 0.8vw, 11px);
  color: var(--c-mid);
  letter-spacing: 0.1em;
}

.ai-m__pname {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(11px, 1vw, 13px);
  font-weight: 600;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  line-height: 1.3;
}

.ai-m__gate-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(9px, 0.75vw, 10px);
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 6px;
  line-height: 1.4;
}

/* ── Discipline label cells ── */
.ai-m__disc {
  display: flex;
  align-items: center;
  padding: 14px 0;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(10px, 0.85vw, 12px);
  font-weight: 600;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border-top: 1px solid rgba(244, 242, 238, 0.07);
  opacity: 0.65;
}

/* ── Activity cells ── */
.ai-m__cell {
  padding: 14px 16px 16px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(11px, 1vw, 13px);
  font-weight: 400;
  line-height: 1.45;
  border-top: 1px solid rgba(244, 242, 238, 0.07);
  border-right: 1px solid rgba(244, 242, 238, 0.04);
}

/* Human: filled, full weight */
.ai-m__cell--h {
  background: rgba(244, 242, 238, 0.09);
  color: var(--paper);
  font-weight: 500;
}

/* AI: no fill, dimmed — visually "lighter" */
.ai-m__cell--ai {
  background: transparent;
  color: rgba(244, 242, 238, 0.38);
}

/* Gate column marker: red right border */
.ai-m__cell--gate {
  border-right: 1.5px solid rgba(197, 43, 16, 0.45);
}

/* ── Legend ── */
.ai-frame__legend {
  display: flex;
  align-items: center;
  gap: 28px;
}

.ai-legend__item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(10px, 0.9vw, 12px);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.45;
}

.ai-legend__swatch {
  width: 20px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.ai-legend__item--h .ai-legend__swatch {
  background: rgba(244, 242, 238, 0.55);
}

.ai-legend__item--ai .ai-legend__swatch {
  background: transparent;
  border: 1px solid rgba(244, 242, 238, 0.28);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .ai-m__ph,
  .ai-m__disc,
  .ai-m__cell { opacity: 1 !important; transform: none !important; }
}

/* ============================================================
   07 — PROJECTS + FOOTER
   Normal scroll flow — no stickiness.
   ============================================================ */

.projects-section {
  padding: clamp(80px, 12vh, 140px) var(--pad-x) clamp(48px, 8vh, 80px);
}

.projects-header {
  margin-bottom: clamp(24px, 4vh, 48px);
}


.projects-headline {
  display: flex;
  flex-direction: column;
  margin-top: clamp(10px, 1.5vh, 20px);
  margin-bottom: clamp(24px, 4vh, 48px);
  max-width: 100%;
}

@media (min-width: 769px) {
  .projects-headline { max-width: 50vw; }
}

.projects-table {
  width: 100%;
  border-top: 1px solid var(--c-divider);
}

.project-row {
  display: grid;
  grid-template-columns: 55px 1fr auto 44px;
  align-items: center;
  gap: clamp(12px, 2.5vw, 40px);
  padding: clamp(18px, 2.8vh, 32px) 0;
  border-bottom: 1px solid var(--c-divider);
  position: relative;
  cursor: pointer;
  will-change: opacity;
}

.project-row__desc {
  text-align: right;
}

.project-row__arrow {
  text-align: right;
  font-size: 1.1em;
  display: block;
  will-change: transform;
}

/* Row hover */
.project-row::before {
  content: '';
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--paper) 8%, transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.project-row:hover::before { opacity: 1; }

/* Footer */
.footer {
  padding: clamp(60px, 10vh, 100px) var(--pad-x) clamp(48px, 8vh, 80px);
}

.footer__cols {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.footer__left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.footer__personal {
  will-change: transform, opacity;
}

.contact-block {
  padding: clamp(120px, 18vh, 200px) 0 clamp(32px, 5vh, 56px);
  margin-bottom: clamp(8px, 1vh, 16px);
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 4vh, 48px);
}

/* Zero out nested header/headline margins — gap handles all spacing */
.contact-block .projects-header  { margin-bottom: 0; }
.contact-block .projects-headline { margin-top: 0; margin-bottom: 0; }

.contact-block__prompt {
  color: color-mix(in srgb, var(--paper) 55%, transparent);
}

/* ---- Contact form ---- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 480px;
}

.contact-form__field {
  background: var(--paper);
  border: 1px solid var(--paper);
  border-radius: 4px;
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(14px, 1.1vw, 16px);
  font-weight: 300;
  padding: 12px 16px;
  outline: none;
  transition: box-shadow 0.2s ease;
  width: 100%;
}

.contact-form__field::placeholder {
  color: rgba(17, 17, 17, 0.45);
}

.contact-form__field:focus {
  box-shadow: 0 0 0 3px rgba(244, 242, 238, 0.5);
}

.contact-form__field--area { resize: vertical; min-height: 100px; }

.contact-form__submit {
  align-self: flex-start;
  background: var(--paper);
  border: none;
  border-radius: 4px;
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 12px 24px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.contact-form__submit:hover  { opacity: 0.8; }
.contact-form__submit:disabled { opacity: 0.45; cursor: default; }

.contact-form__thanks {
  color: color-mix(in srgb, var(--paper) 70%, transparent);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (min-width: 769px) {
  .principle-body--narrow { max-width: 50vw; }
}

@media (max-width: 768px) {

  .hud {
    padding: 14px var(--pad-x);
  }

  .hud__role { display: none; }

  .panel__content {
    padding-top: clamp(56px, 8vh, 80px);
    padding-bottom: clamp(32px, 5vh, 56px);
  }

  .color-buffer { height: 28vh; }

  .strip-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .panel__content--leadership {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .leadership-image { display: none; }

  .beliefs-principles {
    grid-template-columns: 1fr;
    gap: 40px 0;
  }

  .beliefs-divider { display: none; }

  .delivery-phase {
    grid-template-columns: 32px 1fr;
  }

  .delivery-phase__intent { display: none; }

  .project-row {
    grid-template-columns: 44px 1fr 32px;
  }

  .project-row__desc { display: none; }

  .footer__cols {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer__right { align-items: flex-start; }

}

/* ============================================================
   REDUCED MOTION — disable animations for users who prefer it
   GSAP is also paused via JS when this preference is detected.
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Ensure sticky panel content is always fully visible */
  .panel__content {
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
  }

  /* Ensure line-mask content is always visible */
  .line-mask span {
    transform: none !important;
    opacity: 1 !important;
  }

  /* Remove smooth scroll */
  html { scroll-behavior: auto; }
}