/* ─────────────────────────────────────────────────────────────
   Sunil Ayyappan — Portfolio
   Editorial AI Lab · Light + Dark · Modal deep-dives
   ───────────────────────────────────────────────────────────── */

:root {
  /* Light (default) */
  --bg: #f7f4ec;
  --bg-alt: #fbf9f3;
  --bg-deep: #efeadd;
  --paper: #f0ebde;
  --ink: #14130f;
  --ink-soft: #2a271f;
  --muted: #7a766c;
  --muted-2: #9c978a;
  --rule: #d9d3c4;
  --rule-soft: #e8e3d5;
  --accent: #8a3a18;
  --accent-2: #1c3d5a;
  --accent-soft: rgba(138, 58, 24, 0.10);
  --accent-line: rgba(138, 58, 24, 0.25);
  --shadow: 0 1px 0 rgba(20, 19, 15, 0.04), 0 12px 32px -12px rgba(20, 19, 15, 0.10);
  --shadow-big: 0 30px 80px -20px rgba(20, 19, 15, 0.25);

  --serif: 'Instrument Serif', 'Georgia', serif;
  --sans: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --maxw: 1280px;
  --pad-x: clamp(24px, 5vw, 88px);
  --section-y: clamp(72px, 10vw, 128px);
}

:root[data-theme="dark"] {
  --bg: #0e0d0a;
  --bg-alt: #16140f;
  --bg-deep: #080705;
  --paper: #1a1813;
  --ink: #f0ece3;
  --ink-soft: #d8d2c4;
  --muted: #908b7f;
  --muted-2: #6f6a5e;
  --rule: #2a2825;
  --rule-soft: #1f1d1a;
  --accent: #e3854f;
  --accent-2: #6ba0c9;
  --accent-soft: rgba(227, 133, 79, 0.12);
  --accent-line: rgba(227, 133, 79, 0.32);
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 16px 40px -16px rgba(0, 0, 0, 0.5);
  --shadow-big: 0 30px 80px -20px rgba(0, 0, 0, 0.7);
}

/* ─── Reset & base ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.3s ease, color 0.3s ease;
}

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

/* ─── Type system ─── */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
}
.eyebrow.accent { color: var(--accent); }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; margin: 0; color: var(--ink); }
h1 { font-size: clamp(56px, 11vw, 140px); line-height: 0.92; }
h2 { font-size: clamp(36px, 6vw, 72px); line-height: 1.0; }
h3 { font-size: clamp(24px, 3vw, 36px); line-height: 1.1; }
h4 { font-size: clamp(18px, 2vw, 22px); line-height: 1.2; }
.italic { font-style: italic; }
.accent { color: var(--accent); }

p { margin: 0 0 1em; }

/* ─── Layout ─── */
.container { max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad-x); padding-right: var(--pad-x); }
section { padding: var(--section-y) 0; position: relative; }
section + section { border-top: 1px solid var(--rule); }

.hr-soft { border: 0; border-top: 1px solid var(--rule); margin: 0; }

/* Two-col section: side label + body */
.split {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; gap: 20px; }
  .split .side { position: static; }
}
.split .side { position: sticky; top: 96px; }
.split .side .num {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  display: block; margin-bottom: 6px;
}
.split .side .lbl {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--pad-x);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  transition: background 0.3s ease, border-color 0.3s ease, padding 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--rule);
  padding-top: 10px; padding-bottom: 10px;
}
.nav__logo {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--serif); font-style: italic; font-size: 22px;
  letter-spacing: -0.01em; text-transform: none; color: var(--ink);
}
.nav__logo .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; display: inline-block; }
.nav__links { display: flex; gap: 28px; }
.nav__links a {
  position: relative;
  color: var(--muted);
  transition: color 0.2s ease;
}
.nav__links a::after {
  content: ""; position: absolute; left: 50%; bottom: -6px;
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
  opacity: 0; transform: translateX(-50%) scale(0.5);
  transition: opacity 0.2s, transform 0.2s;
}
.nav__links a:hover, .nav__links a.active { color: var(--ink); }
.nav__links a.active::after { opacity: 1; transform: translateX(-50%) scale(1); }
.nav__right { display: flex; gap: 14px; align-items: center; }
.nav__btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  color: var(--ink);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.nav__btn:hover { background: var(--accent-soft); border-color: var(--accent-line); transform: rotate(15deg); }
.nav__btn svg { width: 16px; height: 16px; }

@media (max-width: 720px) {
  .nav__links { display: none; }
}

/* ─── HERO ─── */
.hero {
  padding-top: clamp(120px, 18vw, 200px);
  padding-bottom: clamp(64px, 10vw, 120px);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: end;
}
@media (max-width: 880px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__portrait { max-width: 260px; }
}
.hero__name { letter-spacing: -0.025em; }
.hero__name em { font-style: italic; color: var(--accent); }
.hero__tag {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.35;
  margin: 32px 0 0;
  max-width: 640px;
  color: var(--ink-soft);
}
.hero__portrait {
  aspect-ratio: 4 / 5;
  border: 1px solid var(--rule);
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.hero__portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 28%;
  filter: contrast(1.02);
  transition: filter 0.6s ease, transform 1.2s cubic-bezier(0.2, 0.7, 0.3, 1);
  display: block;
}
.hero__portrait:hover img { filter: contrast(1.05) brightness(1.02); transform: scale(1.02); }
.hero__portrait::after {
  /* paper-grain overlay */
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 30%, transparent 40%, rgba(20,19,15,0.15) 100%);
  pointer-events: none;
}
.hero__portrait .placeholder {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); text-align: center; line-height: 1.8;
}
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px; margin-top: 64px; padding-top: 36px;
  border-top: 1px solid var(--rule);
}
@media (max-width: 720px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
.hero__stats .stat .val {
  font-family: var(--serif);
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  color: var(--ink);
}
.hero__stats .stat .lbl { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.35; }
.hero__meta {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 32px; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.pill {
  border: 1px solid var(--rule); padding: 6px 12px; border-radius: 999px;
}
.pill.accent { border-color: var(--accent-line); color: var(--accent); }

/* ─── ABOUT ─── */
.about p {
  font-family: var(--serif); font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.45; margin: 0 0 22px; max-width: 760px;
}
.about p:first-child { color: var(--ink); }
.about p + p { color: var(--muted); }

/* ─── PROGRAMS / FEATURED PROJECTS ─── */
.programs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}
@media (max-width: 720px) {
  .programs__grid { grid-template-columns: 1fr; }
}
.program {
  padding: 36px 32px 32px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
  position: relative;
  cursor: default;
  transition: background 0.3s ease;
}
.program:nth-child(2n) { border-right: none; }
@media (max-width: 720px) {
  .program { border-right: none; padding: 28px 0; }
}
.program:hover { background: var(--accent-soft); }
.program .program__num {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--accent);
}
.program h3 {
  margin: 16px 0 8px; font-style: italic;
  font-size: clamp(24px, 2.6vw, 32px); line-height: 1.1;
}
.program__role {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 14px;
}
.program__desc {
  font-size: 15px; line-height: 1.55; color: var(--ink-soft); margin: 0 0 16px;
}
.program__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.program__tags span {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted);
  border: 1px solid var(--rule); padding: 3px 8px; border-radius: 999px;
}
.program__metric {
  position: absolute; top: 32px; right: 32px;
  font-family: var(--serif); font-size: 36px; line-height: 1; color: var(--accent);
}
.program.placeholder {
  background: repeating-linear-gradient(-45deg, transparent 0 8px, var(--bg-alt) 8px 16px);
  border-color: var(--rule);
}
.program.placeholder h3 { color: var(--muted); }
.program.placeholder::before {
  content: "fill me in"; position: absolute; top: 36px; right: 32px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
}

/* ─── EXPERIENCE TIMELINE ─── */
.experience .job {
  padding: 36px 0;
  border-top: 1px solid var(--rule);
}
.experience .job:first-child { border-top: none; padding-top: 8px; }
.job__head {
  display: grid; grid-template-columns: 1fr 200px;
  gap: 24px; align-items: baseline; margin-bottom: 16px;
}
@media (max-width: 720px) {
  .job__head { grid-template-columns: 1fr; gap: 8px; }
}
.job__title { font-size: clamp(22px, 2.6vw, 30px); margin: 0; }
.job__co { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-top: 6px; letter-spacing: 0.08em; }
.job__period {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); text-align: right;
}
@media (max-width: 720px) {
  .job__period { text-align: left; }
}
.job__summary {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(17px, 1.8vw, 20px); line-height: 1.4;
  color: var(--muted); margin: 0 0 20px; max-width: 720px;
}
.job__bullets { margin: 0; padding: 0; list-style: none; }
.job__bullets li {
  display: grid; grid-template-columns: 32px 1fr; gap: 12px;
  padding: 10px 0; font-size: 15px; line-height: 1.55; color: var(--ink-soft);
}
.job__bullets li .b-num {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  color: var(--accent); padding-top: 4px;
}

/* ─── WINS / HIGHLIGHTS ─── */
.wins__grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
}
@media (max-width: 880px) { .wins__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .wins__grid { grid-template-columns: 1fr; } }
.win {
  padding: 36px 28px;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}
@media (min-width: 881px) { .win:nth-child(3n) { border-right: none; } }
@media (min-width: 561px) and (max-width: 880px) { .win:nth-child(2n) { border-right: none; } }
@media (max-width: 560px) { .win { border-right: none; } }
.win .val {
  font-family: var(--serif); font-size: clamp(48px, 6vw, 72px);
  line-height: 0.95; color: var(--accent);
}
.win .lbl { font-family: var(--serif); font-style: italic; font-size: 20px; margin-top: 10px; }
.win .ctx { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* ─── SKILLS ─── */
.skills__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
@media (max-width: 880px) { .skills__grid { grid-template-columns: 1fr; gap: 28px; } }
.skill-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.skill-col ul { margin: 16px 0 0; padding: 0; list-style: none; }
.skill-col ul li {
  font-family: var(--serif); font-style: italic; font-size: 19px;
  padding: 10px 0; border-bottom: 1px solid var(--rule);
}

/* ─── EDUCATION ─── */
.edu__row {
  display: grid; grid-template-columns: 1fr 120px;
  gap: 24px; align-items: baseline;
  padding: 20px 0; border-top: 1px solid var(--rule);
}
.edu__row:last-child { border-bottom: 1px solid var(--rule); }
.edu__school { font-size: clamp(22px, 2.4vw, 28px); }
.edu__prog { font-size: 14px; color: var(--muted); margin-top: 4px; }
.edu__year {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); text-align: right;
}

/* ─── SPEAKING ─── */
.speak__row {
  display: grid; grid-template-columns: 56px 1fr 80px;
  gap: 16px; padding: 18px 0; border-top: 1px solid var(--rule);
  align-items: baseline;
}
@media (max-width: 560px) { .speak__row { grid-template-columns: 40px 1fr 60px; gap: 10px; } }
.speak__row:last-child { border-bottom: 1px solid var(--rule); }
.speak__num { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; color: var(--accent); }
.speak__t { font-size: clamp(18px, 2vw, 22px); }
.speak__v { font-size: 13px; color: var(--muted); margin-top: 4px; }
.speak__y {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--muted); text-align: right; text-transform: uppercase;
}

/* ─── RECS ─── */
.recs { display: grid; gap: 32px; }
.rec {
  margin: 0; padding: 8px 0 8px 32px;
  border-left: 2px solid var(--accent);
}
.rec p {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(19px, 2.2vw, 24px); line-height: 1.4;
  margin: 0; color: var(--ink);
}
.rec footer {
  font-size: 13px; color: var(--muted); margin-top: 14px; font-style: normal;
}

/* ─── CONTACT ─── */
.contact {
  background: var(--bg-alt);
}
.contact h2 em { font-style: italic; color: var(--accent); }
.contact__hero h2 { max-width: 1000px; }
.contact__grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 56px; margin-top: 56px; padding-top: 36px;
  border-top: 1px solid var(--rule);
}
@media (max-width: 880px) {
  .contact__grid { grid-template-columns: 1fr; gap: 40px; }
}
.contact__info dl { margin: 0; display: grid; gap: 20px; }
.contact__info dt { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.contact__info dd { margin: 6px 0 0; font-family: var(--serif); font-size: 22px; }
.contact__info dd a:hover { color: var(--accent); }
.socials { display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.socials a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; border: 1px solid var(--rule); border-radius: 999px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
  transition: all 0.2s ease;
}
.socials a:hover { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.socials a svg { width: 14px; height: 14px; }

/* contact form */
.form__field { display: grid; gap: 6px; margin-bottom: 18px; }
.form__field label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}
.form__field input, .form__field textarea {
  font-family: var(--sans); font-size: 16px; color: var(--ink);
  background: transparent;
  border: 0; border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  outline: none;
  transition: border-color 0.2s ease;
  width: 100%;
  resize: vertical;
}
.form__field input:focus, .form__field textarea:focus { border-bottom-color: var(--accent); }
.form__field textarea { min-height: 100px; }
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 14px 28px; border-radius: 999px;
  border: 1px solid var(--ink);
  background: var(--ink); color: var(--bg);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--accent); color: #fff; }
.btn svg { width: 14px; height: 14px; }

/* ─── FOOTER ─── */
.footer {
  border-top: 1px solid var(--rule);
  padding: 32px var(--pad-x);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
}
.footer .domain { color: var(--ink); font-family: var(--serif); font-style: italic; text-transform: none; letter-spacing: 0; font-size: 16px; }

/* ─── CAREER TIMELINE ─── */
.timeline-wrap {
  margin: 0 0 88px;
  position: relative;
}
.timeline-meta {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 28px; gap: 24px; flex-wrap: wrap;
}
.timeline-meta .yrs {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--muted); text-transform: uppercase;
}
.timeline-meta .you {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--accent); text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 8px;
}
.timeline-meta .you .pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

.tl {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.tl__rail {
  position: absolute;
  left: 0; right: 0;
  top: 56px;
  height: 1px;
  background: var(--rule);
  pointer-events: none;
}
.tl__rail::after {
  content: "";
  position: absolute;
  right: -2px; top: -3px;
  width: 0; height: 0;
  border-left: 7px solid var(--accent);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}
.tl-phase {
  position: relative;
  padding: 0 24px 0 0;
}
.tl-phase__title {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 6px;
}
.tl-phase__years {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--muted-2); margin-bottom: 26px;
}
.tl-phase__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bg); border: 1.5px solid var(--muted);
  position: relative; z-index: 2;
  margin-bottom: 20px;
}
.tl-phase__body {
  padding-top: 4px;
}
.tl-phase__org {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 8px;
}
.tl-phase__program {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(20px, 2.2vw, 26px); line-height: 1.2;
  color: var(--ink); margin: 0 0 4px;
}
.tl-phase__program + .tl-phase__program {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dotted var(--rule);
}
.tl-phase--current .tl-phase__title { color: var(--accent); }
.tl-phase--current .tl-phase__dot {
  background: var(--accent); border-color: var(--accent);
  width: 14px; height: 14px;
  margin-top: -2px; margin-left: -2px; margin-bottom: 18px;
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.tl-phase--current .tl-phase__program { color: var(--ink); }
.tl-phase--current .tl-phase__org { color: var(--accent); }

@media (max-width: 880px) {
  .tl { grid-template-columns: 1fr; gap: 24px; }
  .tl__rail { display: none; }
  .tl-phase {
    padding: 20px 0 0 24px;
    border-left: 1px solid var(--rule);
    position: relative;
  }
  .tl-phase__dot { position: absolute; left: -5px; top: 22px; margin: 0; }
  .tl-phase__years { margin-bottom: 16px; }
}

/* ─── SCROLL-IN ANIMATIONS ─── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.8s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.fade-in.in { opacity: 1; transform: none; }
.fade-in.d-1 { transition-delay: 0.06s; }
.fade-in.d-2 { transition-delay: 0.12s; }
.fade-in.d-3 { transition-delay: 0.18s; }
.fade-in.d-4 { transition-delay: 0.24s; }
.fade-in.d-5 { transition-delay: 0.30s; }
.fade-in.d-6 { transition-delay: 0.36s; }
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
}

/* ─── CUSTOM CURSOR ─── */
.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 16px; height: 16px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1000;
  mix-blend-mode: difference;
  transform: translate(-50%, -50%);
  transition: width 0.25s ease, height 0.25s ease, background 0.2s ease, opacity 0.2s ease;
  opacity: 0;
}
.cursor.visible { opacity: 0.85; }
.cursor.hover { width: 56px; height: 56px; background: var(--accent); border-color: var(--accent); }
@media (hover: none), (max-width: 720px) { .cursor { display: none; } }

/* ─── UTILITIES ─── */
.section-title {
  display: grid; grid-template-columns: 200px 1fr;
  gap: 56px; align-items: end;
  margin-bottom: 56px;
}
@media (max-width: 880px) { .section-title { grid-template-columns: 1fr; gap: 16px; margin-bottom: 36px; } }
.section-title h2 em { font-style: italic; color: var(--accent); }

.note-banner {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  margin-bottom: 24px;
}
.note-banner .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ─────────────────────────────────────────────────────────────
   ADDITIONS · Tier-2 design
   Ticker · Status · Rail · Thesis · Modal · Ask widget
   ───────────────────────────────────────────────────────────── */

.cursor.expand { width: 80px; height: 80px; background: var(--accent); border-color: var(--accent); }
.cursor.expand::after {
  content: "EXPAND ↗";
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.16em;
  color: var(--bg); mix-blend-mode: normal;
}

/* ─── TICKER ─── */
.ticker {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklab, var(--bg-alt) 70%, var(--bg) 30%);
  overflow: hidden;
  position: relative;
}
.ticker__track {
  display: flex;
  gap: 64px;
  padding: 16px 0;
  animation: ticker-scroll 70s linear infinite;
  width: max-content;
  will-change: transform;
}
.ticker__item {
  display: inline-flex; align-items: center; gap: 14px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink);
  white-space: nowrap;
}
.ticker__item .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.ticker__item .muted { color: var(--muted); }
@keyframes ticker-scroll {
  to { transform: translateX(-50%); }
}
.ticker:hover .ticker__track { animation-play-state: paused; }

/* ─── HERO STATUS ─── */
.status {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase;
}
.status .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
.status .swap {
  position: relative;
  display: inline-grid;
}
.status .swap span {
  grid-area: 1 / 1;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.status .swap span.in { opacity: 1; transform: none; }
.status .swap span.out { opacity: 0; transform: translateY(-8px); }
@media (max-width: 560px) {
  .status { font-size: 10px; padding: 6px 12px; }
  .status .swap span { white-space: normal; }
}

/* ─── SCROLL PROGRESS RAIL ─── */
.rail {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex; flex-direction: column; gap: 14px;
}
.rail a {
  display: flex; align-items: center; gap: 12px; justify-content: flex-end;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.rail a .name {
  opacity: 0; transform: translateX(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.rail a .tick { width: 22px; height: 1px; background: var(--rule); transition: all 0.3s ease; }
.rail a:hover .name, .rail a.active .name { opacity: 1; transform: none; }
.rail a:hover .tick, .rail a.active .tick { width: 36px; background: var(--accent); }
.rail a.active { color: var(--accent); }
@media (max-width: 1180px) { .rail { display: none; } }

/* ─── THESIS / PULL QUOTE ─── */
.thesis {
  padding: clamp(80px, 14vw, 160px) 0;
  border-top: 1px solid var(--rule);
}
.thesis__inner {
  max-width: 1100px; margin: 0 auto;
  padding: 0 var(--pad-x);
}
.thesis__eyebrow {
  display: flex; align-items: center; gap: 14px; margin-bottom: 28px;
}
.thesis__eyebrow span {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted);
}
.thesis__eyebrow .line { flex: 1; height: 1px; background: var(--rule); }
.thesis__quote {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 88px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink); margin: 0;
}
.thesis__quote em { font-style: italic; color: var(--accent); }
.thesis__attr {
  margin-top: 36px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}

/* ─── PROGRAM CARDS: hover & clickable ─── */
.program {
  cursor: pointer;
  user-select: none;
  transition: background 0.3s ease, transform 0.4s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.program:hover {
  background: var(--paper);
  transform: translateY(-2px);
}
.program::after {
  content: "↗ Open deep-dive";
  position: absolute; right: 32px; bottom: 28px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
  opacity: 0; transform: translateX(-6px);
  transition: all 0.3s ease;
}
.program:hover::after { opacity: 1; transform: none; color: var(--accent); }
.program.placeholder { cursor: default; }
.program.placeholder:hover { transform: none; background: var(--paper); }
.program.placeholder::after { display: none; }
@media (max-width: 720px) { .program::after { right: 0; } }

/* "Now leading" badge on the current program */
.program__now {
  position: absolute;
  top: 20px; right: 20px;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  background: var(--bg);
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--accent-line);
  z-index: 2;
}
.program__now .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
.program--current {
  background: color-mix(in oklab, var(--accent-soft) 40%, var(--bg) 60%);
}
.program--current:hover {
  background: color-mix(in oklab, var(--accent-soft) 60%, var(--paper) 40%);
}
@media (max-width: 720px) {
  .program__now { top: 12px; right: 12px; }
}

/* ─── MODAL / PROGRAM DEEP-DIVE ─── */
.modal {
  position: fixed; inset: 0;
  z-index: 200;
  pointer-events: none;
}
.modal__overlay {
  position: absolute; inset: 0;
  background: rgba(20, 19, 15, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  transition: opacity 0.45s ease;
}
:root[data-theme="dark"] .modal__overlay { background: rgba(0, 0, 0, 0.7); }
.modal__sheet {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(960px, 100vw);
  background: var(--bg);
  border-left: 1px solid var(--rule);
  box-shadow: var(--shadow-big);
  transform: translateX(100%);
  transition: transform 0.55s cubic-bezier(0.18, 0.8, 0.2, 1);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.modal.open { pointer-events: auto; }
.modal.open .modal__overlay { opacity: 1; }
.modal.open .modal__sheet { transform: translateX(0); }
.modal__close {
  position: sticky;
  top: 24px;
  margin: 24px 24px 0 auto;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink);
  cursor: pointer;
  z-index: 5;
  width: fit-content;
  transition: all 0.2s ease;
}
.modal__close:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.modal__body {
  padding: 0 clamp(28px, 6vw, 72px) 96px;
  margin-top: -24px;
}

.dd-eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent);
}
.dd-h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 5vw, 72px); line-height: 1; letter-spacing: -0.02em;
  margin: 14px 0 0; color: var(--ink);
}
.dd-h1 em { font-style: italic; color: var(--accent); }
.dd-sub {
  margin-top: 18px;
  font-family: var(--serif); font-style: italic;
  font-size: clamp(20px, 2.4vw, 26px); line-height: 1.4; color: var(--muted);
  max-width: 720px;
}
.dd-meta {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 40px 0; padding: 24px 0;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
@media (max-width: 560px) { .dd-meta { grid-template-columns: 1fr 1fr; } }
.dd-meta .cell .k {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}
.dd-meta .cell .v {
  font-family: var(--serif); font-size: clamp(22px, 2.4vw, 28px);
  margin-top: 6px; color: var(--ink); line-height: 1.1;
}
.dd-section { margin-top: 48px; }
.dd-section__head {
  display: flex; align-items: baseline; gap: 16px; margin-bottom: 18px;
}
.dd-section__num {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--accent); text-transform: uppercase;
}
.dd-section__title {
  font-family: var(--serif); font-size: clamp(24px, 2.8vw, 32px);
  margin: 0; line-height: 1.1;
}
.dd-section p {
  font-family: var(--sans); font-size: 16px; line-height: 1.65;
  color: var(--ink-soft); margin: 0 0 14px; max-width: 720px;
}
.dd-section ul {
  margin: 0; padding: 0; list-style: none;
  display: flex; flex-direction: column; gap: 2px;
}
.dd-section ul li {
  position: relative;
  padding: 8px 0 8px 32px;
  font-size: 15px; line-height: 1.6; color: var(--ink-soft);
}
.dd-section ul li::before {
  content: "→";
  position: absolute; left: 0; top: 8px;
  color: var(--accent); font-family: var(--mono); font-size: 13px; line-height: 1.6;
}
.dd-section ul li strong { color: var(--ink); font-weight: 600; }
.dd-stack {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin: 18px 0 8px;
}
@media (max-width: 560px) { .dd-stack { grid-template-columns: 1fr; } }
.dd-stack .card {
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 18px;
  border-radius: 4px;
}
.dd-stack .card .k {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
}
.dd-stack .card .v {
  font-family: var(--serif); font-size: 17px; margin-top: 10px;
  line-height: 1.35; color: var(--ink);
}
.dd-tags {
  margin-top: 32px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.dd-tags span {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  border: 1px solid var(--rule); padding: 5px 10px; border-radius: 999px;
}
.dd-pullquote {
  margin: 40px 0;
  padding: 24px 0 24px 32px;
  border-left: 3px solid var(--accent);
  font-family: var(--serif); font-style: italic;
  font-size: clamp(22px, 2.6vw, 30px); line-height: 1.3;
  color: var(--ink);
}
.dd-pullquote footer {
  margin-top: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); font-style: normal;
}

body.modal-open { overflow: hidden; }

/* ─── ASK SUNIL · interactive AI widget ─── */
.ask {
  position: relative;
  border-top: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--paper) 0%, var(--bg) 100%);
  overflow: hidden;
}
.ask__bg {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 18% 28%, var(--accent-soft) 0%, transparent 50%),
    radial-gradient(circle at 82% 72%, var(--accent-soft) 0%, transparent 55%);
  opacity: 0.55;
  pointer-events: none;
}
.ask__inner { position: relative; z-index: 1; }
.ask__intro {
  display: grid; grid-template-columns: 1fr auto;
  gap: 24px; align-items: end;
  margin-bottom: 36px;
}
@media (max-width: 720px) { .ask__intro { grid-template-columns: 1fr; gap: 12px; } }
.ask__title {
  font-family: var(--serif); font-size: clamp(40px, 6vw, 84px);
  line-height: 1; margin: 0; letter-spacing: -0.02em;
}
.ask__title em { font-style: italic; color: var(--accent); }
.ask__sub {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(18px, 1.8vw, 22px); line-height: 1.4;
  color: var(--muted); margin: 0; max-width: 420px;
}
.ask__panel {
  border: 1px solid var(--rule);
  background: var(--bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.ask__form {
  display: grid; grid-template-columns: 1fr auto;
  border-bottom: 1px solid var(--rule);
}
.ask__form textarea {
  border: 0; outline: none; resize: none;
  padding: 20px 22px;
  background: transparent;
  font-family: var(--sans); font-size: 16px; line-height: 1.55;
  color: var(--ink);
  min-height: 64px;
  max-height: 220px;
}
.ask__form textarea::placeholder { color: var(--muted-2); }
.ask__form button {
  border: 0;
  padding: 0 22px;
  background: var(--ink); color: var(--bg);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  transition: background 0.2s ease;
}
.ask__form button:hover { background: var(--accent); }
.ask__form button:disabled { opacity: 0.5; cursor: not-allowed; background: var(--muted-2); }
.ask__form button svg { width: 14px; height: 14px; }
.ask__suggest {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 14px 18px;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.ask__suggest button {
  border: 1px solid var(--rule);
  background: var(--bg); color: var(--ink-soft);
  padding: 6px 12px; border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; cursor: pointer;
  transition: all 0.2s ease;
}
.ask__suggest button:hover {
  border-color: var(--accent); color: var(--accent); background: var(--accent-soft);
}
.ask__answer {
  min-height: 140px;
  padding: 24px 22px;
  font-family: var(--serif); font-size: 19px; line-height: 1.5;
  color: var(--ink);
  white-space: pre-wrap;
}
.ask__answer.empty { color: var(--muted-2); font-style: italic; }
.ask__answer .q {
  display: block; margin-bottom: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  font-style: normal;
}
.ask__answer .pulse-dots { display: inline-flex; gap: 5px; align-items: center; }
.ask__answer .pulse-dots span {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  animation: dot-pulse 1.4s ease-in-out infinite;
}
.ask__answer .pulse-dots span:nth-child(2) { animation-delay: 0.2s; }
.ask__answer .pulse-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dot-pulse {
  0%, 80%, 100% { transform: scale(0.7); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}
.ask__foot {
  padding: 10px 18px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  background: var(--paper);
  display: flex; justify-content: space-between; gap: 12px;
}

/* ─── PHASE MARKERS (section labels) ─── */
.phase-marker {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--muted);
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
}
.phase-marker .num { color: var(--accent); }
.phase-marker .line { flex: 1; height: 1px; background: var(--rule); max-width: 80px; }

/* ─────────────────────────────────────────────────────────────
   COMMAND PALETTE — ⌘K
   ───────────────────────────────────────────────────────────── */
.cmdk-trigger {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 8px 7px 14px;
  border: 1px solid var(--rule);
  background: color-mix(in oklab, var(--bg) 85%, var(--paper) 15%);
  border-radius: 999px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.cmdk-trigger:hover {
  border-color: var(--accent-line); color: var(--accent);
  background: var(--accent-soft);
}
.cmdk-trigger .text { display: none; }
@media (min-width: 760px) { .cmdk-trigger .text { display: inline; } }
.cmdk-trigger .keys {
  display: inline-flex; gap: 3px;
}
.cmdk-trigger kbd {
  font-family: var(--mono); font-size: 10px;
  padding: 2px 5px;
  border: 1px solid var(--rule); border-radius: 4px;
  background: var(--bg);
  color: var(--ink-soft);
}

.cmdk {
  position: fixed; inset: 0;
  z-index: 300;
  pointer-events: none;
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: clamp(56px, 12vh, 140px);
}
.cmdk__bg {
  position: absolute; inset: 0;
  background: rgba(20, 19, 15, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
:root[data-theme="dark"] .cmdk__bg { background: rgba(0, 0, 0, 0.7); }
.cmdk__panel {
  position: relative;
  width: min(640px, 92vw);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 12px;
  box-shadow: var(--shadow-big);
  overflow: hidden;
  transform: translateY(-12px) scale(0.98);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.3s ease;
}
.cmdk.open { pointer-events: auto; }
.cmdk.open .cmdk__bg { opacity: 1; }
.cmdk.open .cmdk__panel { transform: none; opacity: 1; }
.cmdk__input-wrap {
  display: grid; grid-template-columns: auto 1fr;
  gap: 12px; align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--rule);
}
.cmdk__input-wrap svg { width: 18px; height: 18px; color: var(--muted); }
.cmdk__input {
  width: 100%; border: 0; outline: none;
  background: transparent;
  font-family: var(--sans); font-size: 18px; color: var(--ink);
}
.cmdk__input::placeholder { color: var(--muted-2); }
.cmdk__list {
  list-style: none; margin: 0; padding: 8px 0;
  max-height: 55vh; overflow-y: auto;
  overscroll-behavior: contain;
}
.cmdk__group {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted);
  padding: 14px 22px 6px;
}
.cmdk__item {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 14px; align-items: center;
  padding: 10px 22px;
  cursor: pointer;
  transition: background 0.12s ease;
}
.cmdk__item.active, .cmdk__item:hover {
  background: var(--accent-soft);
}
.cmdk__item .icon {
  width: 30px; height: 30px;
  border-radius: 7px;
  border: 1px solid var(--rule);
  background: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em;
  color: var(--muted);
}
.cmdk__item.active .icon { color: var(--accent); border-color: var(--accent-line); background: var(--bg); }
.cmdk__item .body { min-width: 0; }
.cmdk__item .label {
  font-family: var(--sans); font-size: 15px; color: var(--ink);
  line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cmdk__item .sub {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); margin-top: 4px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cmdk__item .meta {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  display: inline-flex; gap: 6px; align-items: center;
}
.cmdk__item.active .meta { color: var(--accent); }
.cmdk__foot {
  padding: 12px 22px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  background: var(--paper);
  display: flex; justify-content: space-between; gap: 16px;
  flex-wrap: wrap;
}
.cmdk__foot .keys { display: inline-flex; gap: 10px; align-items: center; }
.cmdk__foot .keys span { display: inline-flex; gap: 4px; align-items: center; }
.cmdk__foot kbd {
  font-family: var(--mono); font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--rule); border-radius: 4px;
  background: var(--bg);
  color: var(--ink-soft);
}
.cmdk__empty {
  padding: 32px 22px;
  font-family: var(--serif); font-style: italic;
  font-size: 18px;
  color: var(--muted); text-align: center;
}
.cmdk__empty span { color: var(--accent); }

/* ─────────────────────────────────────────────────────────────
   CHAPTER DOCK — bottom-center floating navigation
   ───────────────────────────────────────────────────────────── */

/* Hide the old right-edge rail in favor of the dock */
.rail { display: none !important; }

/* top-of-page scroll progress bar */
.scrollbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 99;
  background: transparent;
  pointer-events: none;
}
.scrollbar__fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
}

.dock {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 90;
  display: flex; align-items: center;
  gap: 2px;
  padding: 6px;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--rule);
  border-radius: 999px;
  box-shadow: var(--shadow-big);
  max-width: calc(100vw - 24px);
  opacity: 0;
  transform: translateX(-50%) translateY(20px);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.dock.ready { opacity: 1; transform: translateX(-50%); }
.dock__nav {
  width: 38px; height: 38px;
  border: 0; background: transparent;
  display: flex; align-items: center; justify-content: center;
  border-radius: 999px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.2s ease;
}
.dock__nav:hover:not(:disabled) {
  background: var(--accent-soft); color: var(--accent);
}
.dock__nav:disabled { opacity: 0.3; cursor: not-allowed; }
.dock__nav svg { width: 16px; height: 16px; }

.dock__current {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--paper);
  cursor: pointer;
  border: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  white-space: nowrap;
  transition: all 0.2s ease;
  position: relative;
}
.dock__current:hover { background: var(--accent-soft); }
.dock__current .num {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
}
.dock__current .name { font-weight: 500; }
.dock__current .total {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--muted);
}
.dock__current .caret {
  width: 12px; height: 12px;
  opacity: 0.5;
  transition: transform 0.2s ease;
}
.dock.menu-open .dock__current .caret { transform: rotate(180deg); }

/* keyboard hint */
.dock__hint {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0 10px 0 6px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted);
  border-left: 1px solid var(--rule);
  margin-left: 2px;
  height: 28px;
}
.dock__hint kbd {
  font-family: var(--mono); font-size: 10px;
  padding: 2px 5px;
  border: 1px solid var(--rule); border-radius: 4px;
  background: var(--bg); color: var(--ink-soft);
}
@media (max-width: 640px) { .dock__hint { display: none; } }

/* chapter menu popover */
.dock__menu {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(420px, calc(100vw - 24px));
  max-height: 60vh;
  overflow-y: auto;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 8px;
  box-shadow: var(--shadow-big);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.dock.menu-open .dock__menu {
  opacity: 1; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.dock__menu-head {
  padding: 10px 12px 6px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted);
  display: flex; justify-content: space-between; align-items: center;
}
.dock__menu-head .pages { color: var(--ink-soft); }
.dock__menu-item {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  color: var(--ink);
}
.dock__menu-item:hover { background: var(--accent-soft); }
.dock__menu-item.active {
  background: color-mix(in oklab, var(--accent-soft) 60%, var(--paper) 40%);
}
.dock__menu-item .num {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
  min-width: 28px;
}
.dock__menu-item.active .num { color: var(--accent); }
.dock__menu-item .name {
  font-family: var(--sans); font-size: 15px;
  flex: 1;
}
.dock__menu-item.active .name { color: var(--accent); font-weight: 500; }
.dock__menu-item .badge {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted);
}
.dock__menu-item.active .badge { color: var(--accent); }

@media (max-width: 560px) {
  .dock { bottom: 16px; }
  .dock__current .total { display: none; }
  .dock__current { padding: 6px 12px; font-size: 13px; gap: 8px; }
  .dock__nav { width: 34px; height: 34px; }
}