/* ==========================================================================
   Srinivas Dharavath — portfolio
   Design: "Earthy Minimal" on a naval architect's drafting sheet.
   Palette (from the brand board):
     primary   #2E3A2F  deep forest — headings, primary buttons, ink
     secondary #6B7F5B  sage        — assurance, live states, secondary marks
     tertiary  #D9C9B2  sand        — borders, chips, soft fills
     accent    #C96F4F  terracotta  — the one highlight: key words, numbers, paths
     background#F8F6EE  paper       — the page
   Light by default. A "deep forest" dark variant is available from the toggle.
   ========================================================================== */

/* ---------- 0. Fonts (self-hosted, latin subset) ---------- */
@font-face { font-family: "DM Sans"; font-style: italic; font-weight: 400 800; font-display: swap; src: url("../fonts/dm-sans-italic-400-800.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "DM Sans"; font-style: normal; font-weight: 400 800; font-display: swap; src: url("../fonts/dm-sans-normal-400-800.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("../fonts/ibm-plex-mono-normal-400.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap; src: url("../fonts/ibm-plex-mono-normal-500.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 600; font-display: swap; src: url("../fonts/ibm-plex-mono-normal-600.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* ---------- 1. Tokens ---------- */
:root {
  /* light: paper */
  --bg: #F8F6EE;
  --bg-band: #F1EDE2;
  --surface: #FFFDF8;
  --surface-2: #FFFFFF;
  --line: #E8E0D1;
  --line-2: #D9C9B2;
  --ink: #2E3A2F;
  --ink-2: #4F5B50;
  --ink-3: #656E61;
  --accent: #C96F4F;          /* terracotta: fills, large numbers, traced paths */
  --accent-text: #A8553A;     /* terracotta tuned for small text (4.8:1 on paper) */
  --accent-ink: #FFFFFF;      /* text on accent */
  --accent-soft: rgba(201, 111, 79, .10);
  --sage: #6B7F5B;            /* sage: assurance, live, secondary paths */
  --sage-text: #556847;       /* sage tuned for small text */
  --sage-soft: rgba(107, 127, 91, .12);
  --sand: #D9C9B2;
  --sand-soft: rgba(217, 201, 178, .30);
  --good: #6B7F5B;
  --grid: rgba(46, 58, 47, .06);
  --tile: #FFFFFF;            /* logo tiles stay white so every mark reads */
  --shadow: 0 24px 48px -30px rgba(46, 58, 47, .28);
  --shadow-card: 0 1px 2px rgba(46, 58, 47, .04), 0 10px 30px -18px rgba(46, 58, 47, .22);

  --display: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --body: "DM Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);

  --max: 1400px;
  --gutter: 20px;
  --radius: 16px;
  --radius-s: 10px;
  color-scheme: light;
}

/* dark: deep forest (toggle only, so the first impression is always the paper palette) */
:root[data-theme="dark"] {
  --bg: #1B231C;
  --bg-band: #202A21;
  --surface: #2B372C;
  --surface-2: #33412F;
  --line: #3C4A3D;
  --line-2: #4F5F50;
  --ink: #F8F6EE;
  --ink-2: #D9C9B2;
  --ink-3: #B4AB97;
  --accent: #D47E5E;
  --accent-text: #E8A085;
  --accent-ink: #1B231C;
  --accent-soft: rgba(212, 126, 94, .16);
  --sage: #8FA67E;
  --sage-text: #A9BD98;
  --sage-soft: rgba(143, 166, 126, .14);
  --sand: #D9C9B2;
  --sand-soft: rgba(217, 201, 178, .10);
  --good: #9DB88A;
  --grid: rgba(248, 246, 238, .05);
  --tile: #F8F6EE;
  --shadow: 0 24px 48px -28px rgba(0, 0, 0, .6);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, .2), 0 10px 30px -18px rgba(0, 0, 0, .5);
  color-scheme: dark;
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.62 var(--body);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--accent-ink); }
img { max-width: 100%; }
a { color: var(--accent-text); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: clamp(20px, 3vw, 44px); }
.mono { font-family: var(--mono); }
.eyebrow {
  font: 500 11.5px/1.3 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sage-text);
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 1px;
  transform-origin: left; transition: transform .6s .25s var(--ease);
}

/* highlighted slot = a fact only Srinivas can supply */
.fill {
  font: 500 .86em/1 var(--mono);
  color: var(--accent-text);
  background: var(--accent-soft);
  padding: .2em .42em;
  border-radius: 4px;
  white-space: nowrap;
}

.skip {
  position: absolute; left: 12px; top: -48px; z-index: 50;
  background: var(--ink); color: var(--bg);
  padding: 10px 14px; border-radius: 8px; font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 11px 18px;
  border-radius: 999px; border: 1px solid var(--line-2);
  font: 600 14.5px/1 var(--body); color: var(--ink); text-decoration: none;
  background: var(--surface-2); cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s, transform .15s, box-shadow .2s;
}
.btn:hover { background: var(--sand-soft); border-color: var(--ink); text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--ink); border-color: var(--ink); color: var(--bg); box-shadow: 0 8px 20px -12px rgba(46, 58, 47, .6); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); box-shadow: 0 10px 24px -12px rgba(201, 111, 79, .7); }
.btn-small { min-height: 38px; padding: 8px 14px; font-size: 13.5px; }
/* link buttons point somewhere: the arrow nudges forward on hover */
a.btn:not(.btn-small)::after { content: "→"; font-family: var(--mono); font-weight: 500; transition: transform .2s var(--ease); }
a.btn:not(.btn-small):hover::after { transform: translateX(3px); }

/* ---------- 4. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
/* reading progress along the bottom edge of the header */
.progress {
  position: absolute; left: 0; bottom: -1px; width: 100%; height: 2px;
  background: var(--accent); transform-origin: left; transform: scaleX(0);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 14px/1 var(--display); letter-spacing: .01em; }
.brand-mark { width: 28px; height: 28px; flex: none; }
.brand-mark path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-linecap: round; }
.brand:hover .brand-mark path { animation: redraw 1s cubic-bezier(.4, 0, .2, 1); }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a:not(.btn) { position: relative; padding-block: 6px; color: var(--ink-2); text-decoration: none; font: 500 14px/1 var(--body); transition: color .2s; }
.nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; border-radius: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease);
}
.nav a:not(.btn):hover, .nav a.on { color: var(--ink); }
.nav a:not(.btn):hover::after, .nav a.on::after { transform: scaleX(1); }
.theme-toggle {
  width: 40px; height: 40px; border-radius: 999px; border: 1px solid var(--line-2);
  background: transparent; color: var(--ink-2); cursor: pointer; display: grid; place-items: center;
  transition: color .2s, border-color .2s, background-color .2s;
}
.theme-toggle:hover { color: var(--accent-text); border-color: var(--accent); background: var(--accent-soft); }
.theme-toggle svg { width: 18px; height: 18px; transition: transform .5s var(--ease); }
.theme-toggle:hover svg { transform: rotate(45deg); }
.menu { display: none; position: relative; }
.menu summary {
  list-style: none; cursor: pointer; min-height: 40px; padding: 8px 14px;
  border: 1px solid var(--line-2); border-radius: 999px; font: 600 13px/1.6 var(--body); color: var(--ink);
}
.menu summary::-webkit-details-marker { display: none; }
.menu nav {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 230px;
  display: grid; gap: 2px; padding: 8px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface-2); box-shadow: var(--shadow);
}
.menu nav a { padding: 10px 12px; border-radius: 8px; color: var(--ink); text-decoration: none; font: 500 14px/1.2 var(--body); }
.menu nav a:hover { background: var(--sand-soft); }
.menu nav .btn { border-radius: 8px; }
@media (max-width: 900px) {
  .nav { display: none; }
  .menu { display: block; }
}

/* ---------- 5. Sections ---------- */
.section { padding-block: 92px; border-top: 1px solid var(--line); }
.section-band { background: var(--bg-band); }
.section-head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 760px; }
.section-head h2 { font-size: clamp(30px, 3.6vw, 42px); line-height: 1.06; font-weight: 700; letter-spacing: -.025em; }
.section-head p:not(.eyebrow) { color: var(--ink-2); font-size: 17px; max-width: 64ch; }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background-image:
    radial-gradient(60% 50% at 85% 30%, var(--sand-soft), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: auto, 28px 28px, 28px 28px;
  border-bottom: 1px solid var(--line);
}
.hero .wrap { position: relative; display: grid; gap: 22px; padding-block: clamp(56px, 9vw, 112px) clamp(48px, 7vw, 88px); }
.hero-text { display: grid; gap: 22px; }
@media (min-width: 1000px) {
  .hero .wrap { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); column-gap: 48px; align-items: center; }
  .hero .wrap > .hero-text { grid-column: 1; grid-row: 1; }
  .hero .wrap > .bodyplan { position: static; grid-column: 2; grid-row: 1; width: 100%; align-self: center; opacity: 1; pointer-events: auto; cursor: crosshair; touch-action: pan-y; }
  .hero .wrap > .proof { grid-column: 1 / -1; grid-row: 2; }
}
.hero-kicker { font: 500 12px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.hero h1 {
  font-size: clamp(40px, 5.6vw, 72px); line-height: .98; font-weight: 800;
  letter-spacing: -.035em; max-width: 14ch; color: var(--ink);
}
.hero h1 .hl { display: block; color: var(--accent); }
.hero-sub { max-width: 58ch; color: var(--ink-2); font-size: clamp(16px, 1.5vw, 18.5px); }
.hero-sub strong { color: var(--ink); font-weight: 600; }
/* the chip row: what you can ask for, like a brand board's keyword bar */
.hero-chips { display: flex; flex-wrap: wrap; gap: 6px 0; list-style: none; padding: 8px 6px; margin: 0; width: fit-content; max-width: 100%;
  background: var(--sand-soft); border: 1px solid var(--line); border-radius: 999px; }
.hero-chips li { font: 500 13px/1 var(--body); color: var(--ink-2); padding: 6px 12px; display: flex; align-items: center; gap: 12px; }
.hero-chips li + li::before { content: "•"; color: var(--accent); font-size: 10px; margin-left: -12px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.proof { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 18px 36px; margin-top: 4px; padding-top: 24px; border-top: 1px dashed var(--line-2); }
.proof div { display: grid; gap: 4px; align-content: start; }
/* a dimension line over each figure, as on a drawing */
.proof div::before {
  content: ""; height: 9px; margin-bottom: 4px; max-width: 150px;
  border-inline: 1px solid var(--accent);
  background: linear-gradient(var(--accent), var(--accent)) center / 100% 1px no-repeat;
  transform-origin: left;
}
.proof .n { font: 800 30px/1 var(--display); letter-spacing: -.03em; color: var(--ink); font-variant-numeric: tabular-nums; }
.proof .l { font: 500 13px/1.4 var(--body); color: var(--ink-3); max-width: 26ch; }
@media (prefers-reduced-motion: no-preference) {
  .hero-text > *, .hero .proof { animation: rise .8s var(--ease) both; }
  .hero-text > :nth-child(2) { animation-delay: .08s; }
  .hero-text > :nth-child(3) { animation-delay: .16s; }
  .hero-text > :nth-child(4) { animation-delay: .24s; }
  .hero-text > :nth-child(5) { animation-delay: .32s; }
  .hero .proof { animation-delay: .4s; }
  .proof div::before { animation: grow 1.1s .5s var(--ease) both; }
  .proof div:nth-child(2)::before { animation-delay: .65s; }
  .proof div:nth-child(3)::before { animation-delay: .8s; }
  .proof div:nth-child(4)::before { animation-delay: .95s; }
}

.bodyplan {
  position: absolute; right: -22%; top: 16px;
  width: 92%; height: auto; pointer-events: none; opacity: .4;
}
.hero .wrap > :not(.bodyplan):not(.titleblock) { position: relative; }
.bodyplan path { fill: none; stroke: var(--ink); stroke-width: 1.1; }
.bodyplan .wl { stroke-opacity: .18; stroke-dasharray: 2 5; }
.bodyplan .cl { stroke-opacity: .35; stroke-dasharray: 8 4 2 4; }
.bodyplan .base { stroke-opacity: .5; }
.bodyplan .sta { stroke-opacity: .42; }
.bodyplan .main { stroke: var(--accent); stroke-opacity: 1; stroke-width: 1.7; }
@media (prefers-reduced-motion: no-preference) {
  .bodyplan .sta, .bodyplan .main {
    stroke-dasharray: 1; stroke-dashoffset: 1;
    animation: draw 1.3s cubic-bezier(.4, 0, .2, 1) forwards;
    animation-delay: calc(var(--i) * 50ms);
  }
}
/* the design waterline: rides at 55% load, follows the pointer on desktop */
.bodyplan .water-level { transform: translateY(159.2px); transition: transform .7s var(--ease); }
.bodyplan .water-body { fill: var(--sage-soft); transition: fill .3s; }
.bodyplan .wave { stroke: var(--sage); stroke-width: 1.5; transition: stroke .3s; }
.bodyplan .dwl-label, .bodyplan .bp-hint { font: 500 10px/1 var(--mono); letter-spacing: .08em; }
.bodyplan .dwl-label { fill: var(--sage-text); transition: fill .3s; }
.bodyplan .bp-hint { fill: var(--ink-3); transition: opacity .4s; }
.bodyplan.over .water-body { fill: var(--accent-soft); }
.bodyplan.over .wave { stroke: var(--accent); }
.bodyplan.over .dwl-label { fill: var(--accent-text); }
.bodyplan.touched .bp-hint { opacity: 0; }
@media (max-width: 999px), (hover: none) { .bodyplan .dwl-label, .bodyplan .bp-hint { display: none; } }
@media (prefers-reduced-motion: no-preference) {
  .bodyplan .wave { animation: wave 2.6s linear infinite; }
  .bodyplan .water-bob { animation: bob 4.5s ease-in-out infinite; }
}

.titleblock {
  position: absolute; right: var(--gutter); bottom: 24px;
  display: grid; grid-template-columns: auto auto;
  font: 500 10px/1.2 var(--mono); letter-spacing: .06em; color: var(--ink-3);
  border: 1px solid var(--line-2); border-radius: 6px; overflow: hidden; background: color-mix(in srgb, var(--surface) 70%, transparent);
}
.titleblock span { padding: 5px 8px; border-right: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.titleblock span:nth-child(2n) { border-right: 0; }
.titleblock span:nth-last-child(-n+2) { border-bottom: 0; }
@media (max-width: 900px) { .titleblock { display: none; } }

/* ---------- 7. Worked with ---------- */
.worked { padding-block: 34px; background: var(--bg-band); border-bottom: 1px solid var(--line); }
.worked .wrap { display: grid; gap: 22px; }
.worked-label { font: 500 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
/* logo marquee: real colours on white tiles, so every mark reads in both themes */
.marquee { position: relative; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent); }
.marquee-track { display: flex; align-items: stretch; gap: 14px; list-style: none; padding: 6px 0; margin: 0;
  width: max-content; animation: marquee 60s linear infinite; }
.marquee:hover .marquee-track, .marquee:focus-within .marquee-track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-track li { flex: none; display: flex; align-items: center; gap: 12px;
  background: var(--tile); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px;
  box-shadow: var(--shadow-card);
  transition: transform .2s var(--ease), border-color .2s, box-shadow .2s; }
.marquee-track img { height: 30px; width: auto; max-width: 132px; object-fit: contain; display: block; }
.marquee-track span { font: 500 12.5px/1.3 var(--body); color: #3D4A3F; white-space: nowrap; }
@media (hover: hover) {
  .marquee-track li:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 3px 0 var(--accent); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee { overflow-x: auto; -webkit-mask-image: none; mask-image: none; }
  .marquee-track { animation: none; }
  .marquee-track li[aria-hidden="true"] { display: none; }
}
.trustline { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; }
.trustline li {
  font: 500 13px/1 var(--body); color: var(--ink-2);
  padding: 9px 12px; border: 1px solid var(--line-2); border-radius: 999px; background: var(--surface);
  transition: border-color .2s, color .2s, background-color .2s;
}
.trustline li::before { content: "✓ "; color: var(--good); font-weight: 700; }
.trustline li:hover { border-color: var(--sage); color: var(--ink); background: var(--sage-soft); }

/* ---------- 8. Use cases ---------- */
/* industry filter: chips above the grid; matches tint, the rest fade (driven by main.js) */
.filter { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: -14px 0 12px; }
.filter .lab { font: 500 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-right: 6px; }
.chip {
  min-height: 38px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-2);
  background: var(--surface); color: var(--ink); font: 500 14px/1 var(--body); cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s, transform .15s var(--ease);
}
.chip:hover { border-color: var(--ink); background: var(--sand-soft); transform: translateY(-1px); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.fcount { min-height: 1.6em; margin-bottom: 14px; font: 500 13px/1.6 var(--mono); color: var(--accent-text); }
.usecase { transition: transform .25s var(--ease), border-color .25s, box-shadow .25s, opacity .35s, background-color .35s; }
.usecase.dimmed { opacity: .38; }
.usecase.dimmed:hover { opacity: .7; }
.usecase.hit { background: color-mix(in srgb, var(--accent) 7%, var(--surface)); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.usecase.hit::before { transform: scaleX(1); }
.usecase.hit .fits b { color: var(--accent-text); }
.usecases { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
@media (min-width: 1080px) { .usecases { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.usecase { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 10px; align-content: start;
  box-shadow: var(--shadow-card); overflow: hidden;
  transition: transform .25s var(--ease), border-color .25s, box-shadow .25s; }
.usecase::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease);
}
@media (hover: hover) {
  .usecase:hover { transform: translateY(-3px); border-color: var(--line-2); box-shadow: var(--shadow); }
  .usecase:hover::before { transform: scaleX(1); }
}
.usecase .ico { width: 40px; height: 40px; padding: 6px; border-radius: 10px; background: var(--sand-soft); color: var(--ink-2); transition: color .25s, transform .3s var(--ease), background-color .25s; }
.usecase .ico * { fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.usecase .ico .ac { stroke: var(--accent); }
.usecase:hover .ico { color: var(--ink); transform: translateY(-2px); background: var(--accent-soft); }
.usecase:hover .ico .ac { animation: redraw .9s cubic-bezier(.4, 0, .2, 1); }
.usecase h3 { font-size: 17.5px; line-height: 1.25; font-weight: 700; letter-spacing: -.01em; }
.usecase .proofline { font-size: 14.5px; color: var(--ink-2); }
.usecase .fits { font: 500 12px/1.5 var(--body); color: var(--ink-3); }
.usecase .fits b { color: var(--sage-text); font-weight: 600; }

/* ---------- 9. Case studies ---------- */
.cases { display: grid; gap: 22px; }
.case {
  display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color .3s, box-shadow .3s, transform .3s var(--ease);
}
@media (hover: hover) {
  .case:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); box-shadow: var(--shadow); transform: translateY(-2px); }
}
@media (max-width: 880px) { .case { grid-template-columns: minmax(0, 1fr); } }
.case-text { padding: clamp(22px, 3vw, 34px); display: grid; gap: 16px; align-content: start; }
.dwg { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; font: 500 11px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.dwg b { color: var(--bg); background: var(--ink); font-weight: 500; padding: 4px 8px; margin-block: -3px; border-radius: 6px; }
/* status chips: live systems get a pulse */
.status { display: inline-flex; align-items: center; gap: 7px; padding: 4px 9px; margin-block: -3px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--ink-2); }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--sand); }
.status.live { border-color: color-mix(in srgb, var(--sage) 50%, var(--line-2)); color: var(--sage-text); background: var(--sage-soft); }
.status.live::before { background: var(--good); }
.status.testing { border-color: color-mix(in srgb, var(--accent) 45%, var(--line-2)); color: var(--accent-text); background: var(--accent-soft); }
.status.testing::before { background: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .status.live::before { animation: ping-dot 2.2s ease-out infinite; }
}
.case h3 { font-size: clamp(23px, 2.4vw, 29px); line-height: 1.1; font-weight: 700; letter-spacing: -.025em; }
.case-text > p:not(.dwg):not(.case-foot):not(.verify) { color: var(--ink-2); font-size: 15.5px; }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.metrics div { background: var(--bg); border: 1px solid var(--line); padding: 14px 14px 12px; border-radius: var(--radius-s); display: grid; gap: 4px; align-content: start;
  transition: background-color .25s, border-color .25s, transform .25s var(--ease); }
.metrics div:hover { background: var(--sand-soft); border-color: var(--line-2); transform: translateY(-2px); }
.metrics .n { font: 800 22px/1.1 var(--display); letter-spacing: -.03em; color: var(--accent); font-variant-numeric: tabular-nums; }
.metrics .n .fill { font-size: 13px; }
.metrics .l { font: 500 12px/1.4 var(--body); color: var(--ink-3); }
.metrics.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 480px) { .metrics, .metrics.two { grid-template-columns: minmax(0, 1fr); } }
.decisions { list-style: none; padding: 0; display: grid; gap: 7px; font-size: 14.5px; color: var(--ink-2); }
.decisions li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 6px; }
.decisions li::before { content: "→"; color: var(--accent-text); font-family: var(--mono); transition: transform .2s var(--ease); }
.decisions li:hover { color: var(--ink); }
.decisions li:hover::before { transform: translateX(3px); }
/* how the result was measured, in one honest line */
.verify { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: start; padding: 12px 14px; border-radius: var(--radius-s);
  background: var(--sage-soft); border: 1px solid color-mix(in srgb, var(--sage) 30%, var(--line)); font-size: 14px; color: var(--ink-2); }
.verify b { font: 600 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--sage-text); white-space: nowrap; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; }
.tags li { font: 500 11.5px/1 var(--mono); padding: 6px 9px; border: 1px solid var(--line-2); border-radius: 999px; color: var(--ink-2); background: var(--surface-2); transition: border-color .2s, color .2s; }
.tags li:hover { border-color: var(--accent); color: var(--accent-text); }
.case-foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; align-items: center; font: 500 12.5px/1.4 var(--body); color: var(--ink-3); padding-top: 14px; border-top: 1px dashed var(--line-2); }

/* architecture drawing panel */
.case-drawing {
  position: relative;
  border-left: 1px solid var(--line);
  background-color: var(--bg-band);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 20px 20px;
  padding: 28px 22px; display: grid; place-items: center;
}
.case-drawing.has-trace { padding-top: 54px; }
@media (max-width: 880px) { .case-drawing { border-left: 0; border-top: 1px solid var(--line); } }
.trace-btn {
  position: absolute; top: 14px; right: 14px;
  font: 500 10.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  padding: 8px 11px; border-radius: 999px; border: 1px solid var(--line-2);
  background: var(--surface-2); color: var(--ink-2); cursor: pointer;
  transition: border-color .2s, color .2s, background-color .2s;
}
.trace-btn:hover { border-color: var(--accent); color: var(--accent-text); }
.trace-btn[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-text); }
.flow { display: grid; justify-items: center; gap: 0; width: 100%; max-width: 380px; }
.node {
  font: 500 12px/1.3 var(--mono); color: var(--ink-2); text-align: center;
  padding: 9px 12px; border: 1px solid var(--line-2); border-radius: 8px; background: var(--surface-2);
  min-width: 150px;
  transition: border-color .25s, background-color .25s, color .25s, box-shadow .25s, transform .25s var(--ease), opacity .25s;
}
.node.key { border-color: var(--accent); color: var(--ink); background: color-mix(in srgb, var(--accent) 10%, var(--surface-2)); }
.node.alt { border: 1px dashed var(--sage); color: var(--sage-text); background: color-mix(in srgb, var(--sage) 10%, var(--surface-2)); }
@media (hover: hover) {
  .node:hover { border-color: var(--accent); color: var(--ink); transform: translateY(-2px); box-shadow: 0 0 0 3px var(--accent-soft); }
}
.edge { width: 1px; height: 18px; background: var(--line-2); position: relative; }
.edge::before { content: ""; position: absolute; inset: 0; background: var(--accent); transform-origin: top; transition: transform .2s ease-out; }
.edge::after { content: ""; position: absolute; left: -4px; bottom: -1px; border: 4.5px solid transparent; border-top-color: var(--accent); border-bottom: 0; transition: border-color .2s; }
.fork { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; width: 100%; position: relative; padding-top: 14px; }
.fork::before { content: ""; position: absolute; top: 0; left: 16.6%; right: 16.6%; height: 1px; background: var(--accent); transition: background-color .2s; }
.fork .node { min-width: 0; font-size: 11px; padding: 8px 6px; position: relative; }
.fork .node::before { content: ""; position: absolute; top: -15px; left: 50%; width: 1px; height: 14px; background: var(--accent); transition: background-color .2s; }
.drawing-caption { margin-top: 14px; font: 500 10.5px/1.4 var(--mono); letter-spacing: .08em; color: var(--ink-3); text-align: center; }

/* tracing: the path lights up one stage at a time (driven by main.js) */
.flow.tracing > .node:not(.lit):not(.done),
.flow.tracing > .fork:not(.lit):not(.done) .node { opacity: .4; }
.flow.tracing .edge:not(.done)::before { transform: scaleY(0); }
.flow.tracing .edge:not(.done)::after { border-top-color: var(--line-2); }
.flow.tracing .fork:not(.lit):not(.done)::before,
.flow.tracing .fork:not(.lit):not(.done) .node::before { background: var(--line-2); }
.flow > .node.lit, .flow > .fork.lit .node {
  border-color: var(--accent); color: var(--ink);
  background: color-mix(in srgb, var(--accent) 16%, var(--surface-2));
  box-shadow: 0 0 0 4px var(--accent-soft); transform: scale(1.04);
}
/* hovering a drawing sets data moving along its edges */
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .case-drawing:hover .flow:not(.tracing) .edge::before,
  .case-drawing:hover .flow:not(.tracing) .fork .node::before {
    background: repeating-linear-gradient(var(--accent) 0 4px, transparent 4px 7px);
    animation: march .45s linear infinite;
  }
}

/* more work: one system per row (sector · name · what it does), so the list takes any number of items */
.more-head { margin-top: 44px; }
.more { margin-top: 14px; list-style: none; padding: 0; border-top: 1px solid var(--line); }
.more li {
  display: grid; grid-template-columns: 180px minmax(0, .9fr) minmax(0, 1.7fr); gap: 4px 32px; align-items: baseline;
  padding: 16px 0; border-bottom: 1px solid var(--line); transition: box-shadow .25s;
}
.more li > * { transition: transform .25s var(--ease), color .2s; }
.more li:hover { box-shadow: inset 2px 0 0 var(--accent); }
.more li:hover > * { transform: translateX(8px); }
@media (max-width: 860px) { .more li { grid-template-columns: minmax(0, 1fr); gap: 3px; } }
.more li:hover b { color: var(--accent-text); }
.more b { font-weight: 700; font-size: 15.5px; letter-spacing: -.01em; }
.more span { font-size: 14.5px; color: var(--ink-2); }
.more small { font: 500 11px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--sage-text); }

/* ---------- 10. How I build: the agent simulator ---------- */
.sim { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); overflow: hidden; margin-bottom: clamp(36px, 5vw, 56px); }
.sim-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); background: var(--bg-band); }
.sim-bar .lab { font: 500 11px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-right: 4px; }
.scn {
  cursor: pointer; border: 1px solid var(--line-2); background: var(--surface-2); color: var(--ink);
  font: 600 13.5px/1 var(--body); padding: 9px 14px; border-radius: 999px; display: inline-flex; gap: 8px; align-items: center;
  transition: border-color .2s, background-color .2s, color .2s, transform .15s var(--ease);
}
.scn i { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.scn .d-good { background: var(--good); } .scn .d-sand { background: var(--sand); } .scn .d-ink { background: var(--ink-3); } .scn .d-accent { background: var(--accent); }
.scn:hover { border-color: var(--ink); transform: translateY(-1px); }
.scn[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: var(--bg); }
.scn:disabled { cursor: wait; opacity: .6; transform: none; }
/* the request path, drawn on the drafting grid */
.pipe {
  display: flex; align-items: stretch; padding: 26px 18px 22px; overflow-x: auto;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 20px 20px;
}
.pcol { display: flex; flex-direction: column; gap: 8px; justify-content: flex-start; min-width: 0; flex: 1 1 0; }
.ar { flex: 0 0 22px; align-self: flex-start; margin-top: 30px; height: 1.5px; background: var(--line-2); position: relative; margin-inline: 4px; transition: background-color .2s; }
.ar::after { content: ""; position: absolute; right: -1px; top: -4px; border: 4.5px solid transparent; border-left: 6px solid var(--line-2); transition: border-color .2s; }
.ar.hot { background: var(--accent); }
.ar.hot::after { border-left-color: var(--accent); }
.stg {
  border: 1px solid var(--line-2); border-radius: var(--radius-s); background: var(--surface-2); padding: 9px 10px; min-height: 62px;
  display: flex; flex-direction: column; gap: 3px; position: relative;
  transition: border-color .25s, background-color .25s, opacity .25s, box-shadow .25s;
}
.stg .r { position: absolute; top: -8px; right: 8px; font: 500 9.5px/1.4 var(--mono); background: var(--surface); border: 1px solid var(--line-2); border-radius: 4px; padding: 0 5px; color: var(--ink-3); }
.stg b { font: 700 13.5px/1.15 var(--display); letter-spacing: -.01em; }
.stg small { font: 500 10.5px/1.3 var(--mono); color: var(--ink-3); }
.stg.alt { border-style: dashed; min-height: 52px; }
.stg.run { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface-2)); box-shadow: 0 0 0 4px var(--accent-soft); }
.stg.ok { border-color: var(--sage); background: var(--sage-soft); }
.stg.ok b::after { content: " ✓"; color: var(--sage-text); }
.stg.fail, .stg.warn { border-color: var(--accent); background: var(--accent-soft); }
.stg.fail b::after { content: " ✕"; color: var(--accent-text); }
.stg.warn b::after { content: " !"; color: var(--accent-text); }
.stg.skipped { opacity: .3; border-style: dashed; background: transparent; box-shadow: none; }
.stg.skipped b::after { content: none; }
.sim-low { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); border-top: 1px solid var(--line); }
.tele { display: grid; grid-template-columns: 1fr 1fr; border-right: 1px solid var(--line); }
.tele div { padding: 16px 18px; border-bottom: 1px solid var(--line); }
.tele div:nth-child(2n) { border-left: 1px solid var(--line); }
.tele div:nth-last-child(-n+2) { border-bottom: none; }
.tele span { display: block; font: 500 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.tele b { display: block; font: 800 clamp(22px, 2.4vw, 28px)/1.2 var(--display); letter-spacing: -.02em; font-variant-numeric: tabular-nums; margin-top: 4px; }
.tele b.good { color: var(--sage-text); }
.tele b.warn { color: var(--accent-text); }
.console { margin: 0; padding: 14px 18px; font: 400 12px/1.7 var(--mono); list-style: none; height: 232px; overflow: auto; background: var(--bg); }
.console li { display: grid; grid-template-columns: 62px 1fr; gap: 8px; animation: fadein .25s ease both; }
.console .t { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.console .ok { color: var(--sage-text); }
.console .bad { color: var(--accent-text); }
.console .cur::after { content: "▍"; color: var(--accent); animation: blink 1s steps(1) infinite; }
.sim-note { padding: 10px 18px; border-top: 1px solid var(--line); font: 400 12.5px/1.6 var(--body); color: var(--ink-3); }
@media (max-width: 1060px) {
  .pipe { flex-direction: column; overflow: visible; }
  .pcol { flex-direction: row; flex-wrap: wrap; }
  .pcol .stg { flex: 1 1 160px; }
  .ar { flex: 0 0 18px; width: 1.5px; height: 18px; margin: 4px 0 4px 24px; align-self: flex-start; }
  .ar::after { right: -4px; top: auto; bottom: -2px; border: 4.5px solid transparent; border-top: 6px solid var(--line-2); }
  .ar.hot::after { border-top-color: var(--accent); border-left-color: transparent; }
}
@media (max-width: 760px) { .sim-low { grid-template-columns: 1fr; } .tele { border-right: none; border-bottom: 1px solid var(--line); } }

/* ---------- 10b. Principles ---------- */
.principles { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 0 40px; list-style: none; padding: 0; counter-reset: p; }
.principles li {
  counter-increment: p; display: grid; grid-template-columns: 58px minmax(0, 1fr); gap: 8px; align-items: start;
  padding: 18px 12px 18px 0; border-top: 1px solid var(--line); border-radius: 0 var(--radius-s) var(--radius-s) 0;
  transition: background-color .25s, border-color .25s;
}
/* outlined drawing numbers that fill in on hover */
.principles li::before {
  content: counter(p, decimal-leading-zero);
  font: 800 30px/1 var(--display); letter-spacing: -.03em;
  color: transparent; -webkit-text-stroke: 1.2px var(--accent);
  transition: color .25s;
}
.principles li:hover { background: linear-gradient(90deg, var(--accent-soft), transparent 75%); border-top-color: var(--accent); }
.principles li:hover::before { color: var(--accent); }
/* the rules a scenario exercised (set by main.js) */
.principles li.glow { background: linear-gradient(90deg, var(--accent-soft), transparent 75%); border-top-color: var(--accent); }
.principles li.glow::before { color: var(--accent); }
.principles b { display: block; font-weight: 700; margin-bottom: 2px; letter-spacing: -.01em; }
.principles span { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 11. Offers ---------- */
/* what every build ships with: a short trust strip above the offers */
.ships { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px 18px; align-items: center; margin: -8px 0 32px; padding: 16px 20px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); }
.ships > b { font: 600 11px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.ships ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 8px; }
.ships li { font: 500 13px/1 var(--body); color: var(--ink-2); padding: 7px 11px; border-radius: 999px; background: var(--sand-soft); border: 1px solid transparent; transition: border-color .2s, color .2s; }
.ships li::before { content: "✓ "; color: var(--good); font-weight: 700; }
.ships li:hover { border-color: var(--sage); color: var(--ink); }
@media (max-width: 720px) { .ships { grid-template-columns: minmax(0, 1fr); } }

.offers { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; }
.offer {
  display: flex; flex-direction: column; gap: 12px; padding: 26px 24px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card);
  transition: transform .25s var(--ease), box-shadow .25s, border-color .25s;
}
.offer.featured { border-color: var(--accent); background: linear-gradient(180deg, var(--accent-soft), transparent 40%) var(--surface); }
@media (hover: hover) {
  .offer:hover { transform: translateY(-4px); border-color: var(--line-2); box-shadow: var(--shadow); }
  .offer.featured:hover { border-color: var(--accent); }
}
.offer .kind { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font: 600 11px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--sage-text); }
.offer .badge { color: var(--accent-ink); background: var(--accent); padding: 4px 8px; border-radius: 999px; letter-spacing: .04em; }
.offer h3 { font-size: 21px; line-height: 1.2; font-weight: 700; letter-spacing: -.02em; }
.offer .lead-in { font-size: 14.5px; color: var(--ink); font-weight: 600; }
.offer ul { list-style: none; padding: 0; display: grid; gap: 6px; align-content: start; font-size: 14.5px; color: var(--ink-2); flex: 1; }
.offer li { position: relative; padding-left: 18px; }
.offer li::before { content: "+"; position: absolute; left: 2px; font-family: var(--mono); font-weight: 500; color: var(--accent-text); }
.offer p.for { font-size: 14px; color: var(--ink-2); }
.offer .btn { width: 100%; justify-content: space-between; }

.snapshot {
  margin-top: 18px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px 28px; align-items: center;
  padding: 22px 24px; border: 1px dashed var(--sage); border-radius: var(--radius); background: var(--sage-soft);
}
.snapshot h3 { font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.snapshot p { color: var(--ink-2); font-size: 15px; margin-top: 4px; max-width: 70ch; }
@media (max-width: 720px) { .snapshot { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 12. How I work ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; list-style: none; padding: 0; counter-reset: s; margin-bottom: 36px; }
.steps li {
  counter-increment: s; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card);
  display: grid; gap: 8px; align-content: start; position: relative;
  transition: transform .25s var(--ease), border-color .25s, box-shadow .25s;
}
.steps li::before { content: "Step " counter(s); font: 600 11px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent-text); }
@media (hover: hover) {
  .steps li:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
}
.steps b { font-family: var(--display); font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.steps span { font-size: 14.5px; color: var(--ink-2); }
.terms { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 40px; }
@media (min-width: 1080px) { .terms { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.term { padding: 18px 0; border-top: 1px solid var(--line); display: grid; gap: 8px; align-content: start; transition: border-color .25s; }
.term:hover { border-top-color: var(--sage); }
.term h3 { font: 600 11.5px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.term ul { list-style: none; padding: 0; display: grid; gap: 6px; font-size: 14.5px; color: var(--ink-2); }
.term li { position: relative; padding-left: 16px; }
.term li::before {
  content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 1px;
  border: 1.2px solid var(--sage); transition: background-color .2s, transform .25s var(--ease);
}
.term li:hover::before { background: var(--sage); transform: rotate(45deg); }
.term li strong { color: var(--ink); font-weight: 600; }

/* ---------- 12b. FAQ: one question per row, answer alongside ---------- */
.faq { margin: 0; border-top: 1px solid var(--line); }
.faq > div {
  display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.65fr); gap: 6px 40px; align-items: start;
  padding: 18px 0; border-bottom: 1px solid var(--line); transition: box-shadow .25s;
}
.faq > div > * { transition: transform .25s var(--ease); }
.faq > div:hover { box-shadow: inset 2px 0 0 var(--accent); }
.faq > div:hover > * { transform: translateX(8px); }
.faq dt { font: 700 16.5px/1.35 var(--display); letter-spacing: -.015em; color: var(--ink); }
.faq dd { margin: 0; font-size: 15px; color: var(--ink-2); max-width: 80ch; }
@media (max-width: 760px) { .faq > div { grid-template-columns: minmax(0, 1fr); gap: 4px; } }

/* ---------- 13. Working hours ---------- */
.tz { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); padding: 22px 24px 16px; }
.tz-row {
  display: grid; grid-template-columns: 190px minmax(0, 1fr) 118px; gap: 16px; align-items: center;
  padding: 7px 10px; margin-inline: -10px; border-radius: 8px; transition: background-color .2s;
}
.tz-row:hover { background: var(--sand-soft); }
.tz-row:hover .tz-num { color: var(--ink); }
.tz-row b { font-size: 14.5px; font-weight: 600; display: block; }
.tz-row small { font: 500 11.5px/1.3 var(--mono); color: var(--ink-3); }
.tz-track {
  position: relative; height: 16px; border-radius: 4px;
  background: linear-gradient(90deg, transparent 39.58%, var(--sage-soft) 39.58%, var(--sage-soft) 77.08%, transparent 77.08%);
}
.tz-track::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: var(--line-2); }
.tz-track i {
  position: absolute; top: 2px; bottom: 2px; border-radius: 4px; background: var(--accent);
  transform-origin: left; transition: transform .9s var(--ease) calc(var(--r, 0) * 80ms);
}
.tz.reveal:not(.in) .tz-track i { transform: scaleX(0); }
/* the current time in Hyderabad, set by main.js */
.tz-track::after {
  content: ""; display: none; position: absolute; top: -5px; bottom: -5px; left: var(--now); width: 2px; margin-left: -1px;
  background: var(--ink); border-radius: 1px;
}
.tz.has-now .tz-track::after { display: block; }
.tz-num { font: 500 12.5px/1.3 var(--mono); color: var(--ink-2); text-align: right; font-variant-numeric: tabular-nums; transition: color .2s; }
.tz-axis { display: grid; grid-template-columns: 190px minmax(0, 1fr) 118px; gap: 16px; margin-top: 6px; font: 500 11px/1 var(--mono); color: var(--ink-3); }
.tz-axis div { position: relative; height: 12px; }
.tz-axis div span { position: absolute; transform: translateX(-50%); }
.tz-note { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px 20px; font: 500 12.5px/1.4 var(--body); color: var(--ink-3); }
.tz-note i { display: inline-block; width: 14px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.tz-note .now-key { display: none; }
.tz-note .now-key i { width: 3px; background: var(--ink); }
.tz-note .now-key b { font-weight: 500; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.tz.has-now .now-key { display: inline; }
@media (max-width: 680px) {
  .tz-row, .tz-axis { grid-template-columns: minmax(0, 1fr) 104px; gap: 4px 10px; }
  .tz-row > div:first-child { grid-column: 1 / -1; }
  .tz-axis > :first-child { display: none; }
}

/* ---------- 14. Testimonials ---------- */
.quotes { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.quote { margin: 0; padding: 24px; border: 1px dashed var(--line-2); border-radius: var(--radius); display: grid; gap: 16px; align-content: space-between; }
.quote blockquote { margin: 0; font-size: 17px; line-height: 1.5; color: var(--ink-2); font-style: italic; }
.quote figcaption { display: flex; gap: 12px; align-items: center; font-size: 14px; color: var(--ink-3); }
.quote .avatar { width: 40px; height: 40px; border-radius: 50%; border: 1px dashed var(--line-2); flex: none; }
.placeholder-note { margin-top: 14px; font: 500 12px/1.5 var(--mono); color: var(--ink-3); }

/* ---------- 15. About ---------- */
/* left: photo card, profile summary, own introduction · right: timeline and "beyond" · both start on one line */
.about-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .92fr); gap: 40px 64px; align-items: start; }
.about-main { display: grid; gap: 26px; }
.profile-card {
  display: grid; grid-template-columns: 172px minmax(0, 1fr); gap: 22px; align-items: start;
  padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card);
}
.profile-card .portrait { width: 100%; box-shadow: none; border-radius: 12px; }
.facts { margin: 0; display: grid; gap: 14px; padding-top: 2px; }
.facts dt { font: 600 10.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.facts dd { margin: 2px 0 0; font-size: 14.5px; line-height: 1.5; color: var(--ink); }
.facts a { color: var(--accent-text); text-decoration: none; border-bottom: 1px solid var(--line-2); transition: border-color .2s; }
.facts a:hover { border-bottom-color: var(--accent); }
.about-main .bio-summary { max-width: none !important; font-size: 16px !important; line-height: 1.7; color: var(--ink-2); }
.about-main .about-text { padding-top: 24px; border-top: 1px solid var(--line); }
.about-side { padding-top: 6px; }
.about-side .beyond { padding-left: 22px; margin-top: 10px; }   /* level with the timeline text */
@media (max-width: 880px) {
  .about-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .profile-card { grid-template-columns: 132px minmax(0, 1fr); gap: 18px; padding: 16px; }
}
@media (max-width: 480px) {
  .profile-card { grid-template-columns: minmax(0, 1fr); }
  .profile-card .portrait { width: 160px; }
}
.about-text { display: grid; gap: 16px; font-size: 16.5px; color: var(--ink-2); }
.about-text strong { color: var(--ink); font-weight: 600; }
.portrait {
  width: 172px; height: auto; aspect-ratio: 4 / 5; max-width: 100%; border-radius: 16px;
  border: 1px solid var(--line-2); object-fit: cover; object-position: center 22%;
  display: block; background: var(--bg);
  box-shadow: 8px 8px 0 var(--sand); transition: box-shadow .3s, transform .3s var(--ease);
}

.timeline { list-style: none; padding: 0; border-left: 1px solid var(--line-2); display: grid; }
.timeline li { position: relative; padding: 0 0 20px 22px; display: grid; gap: 2px; }
.timeline li::before {
  content: ""; position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 1.5px solid var(--ink-3);
  transition: background-color .2s, border-color .2s, transform .25s var(--ease);
}
.timeline li:first-child::before { background: var(--accent); border-color: var(--accent); }
.timeline li.edu::before { background: var(--sage); border-color: var(--sage); }
.timeline li:hover::before { background: var(--accent); border-color: var(--accent); transform: scale(1.3); }
.timeline li:hover b { color: var(--accent-text); }
.timeline time { font: 500 11.5px/1.3 var(--mono); color: var(--ink-3); letter-spacing: .04em; }
.timeline b { font-weight: 700; font-size: 15px; letter-spacing: -.01em; transition: color .2s; }
.timeline span { font-size: 14px; color: var(--ink-2); }
@media (prefers-reduced-motion: no-preference) {
  .timeline li:first-child::before { animation: ping 2.4s ease-out infinite; }
}
.edu-row { display: flex; align-items: center; gap: 10px; }
.edu-row img { width: 28px; height: 28px; }
.beyond { margin-top: 8px; display: grid; gap: 10px; }
.beyond h3 { font: 600 11.5px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.beyond ul { list-style: none; padding: 0; display: grid; gap: 8px; font-size: 14.5px; color: var(--ink-2); }
.beyond li strong { color: var(--ink); font-weight: 600; }

.stack { margin-top: 56px; display: grid; gap: 18px; }
.stack-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.stack-group { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); display: grid; gap: 14px; align-content: start; transition: border-color .25s; }
.stack-group:hover { border-color: var(--line-2); }
.stack-group h3 { font: 600 11.5px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--sage-text); }
.stack-group ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 14px 16px; }
.stack-group li { display: grid; justify-items: center; gap: 6px; width: 64px; text-align: center; font: 500 11px/1.25 var(--body); color: var(--ink-3); transition: color .2s; }
/* tech logos keep their own colors on a light tile, so every mark reads in both themes */
.stack-group .tile {
  width: 46px; height: 46px; border-radius: 12px; background: var(--tile); border: 1px solid var(--line); display: grid; place-items: center;
  transition: transform .2s var(--ease), border-color .2s, box-shadow .2s;
}
.stack-group img { height: 24px; width: auto; max-width: 32px; }
.stack-group li:hover { color: var(--ink); }
@media (hover: hover) {
  .stack-group li:hover .tile { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 3px 0 var(--accent); }
}

/* ---------- 16. Contact ---------- */
.contact { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 40px; align-items: start; }
@media (max-width: 880px) { .contact { grid-template-columns: minmax(0, 1fr); } }
.contact-intro { display: grid; gap: 18px; }
.contact-intro h2 { font-size: clamp(32px, 4vw, 48px); line-height: 1.02; font-weight: 800; letter-spacing: -.03em; }
.contact-intro > p:not(.eyebrow) { color: var(--ink-2); font-size: 17px; max-width: 52ch; }
.direct { list-style: none; padding: 0; display: grid; gap: 10px; font: 500 14px/1.4 var(--body); border-top: 1px solid var(--line); }
.direct li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); transition: border-color .2s; }
.direct li:hover { border-bottom-color: var(--accent); }
.direct span { color: var(--ink-3); min-width: 82px; }
form.brief { display: grid; gap: 14px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-card); }
.field { display: grid; gap: 6px; }
.field label { font: 500 13px/1.3 var(--body); color: var(--ink-2); }
.field input, .field select, .field textarea {
  font: 400 15px/1.4 var(--body); color: var(--ink); background: var(--surface-2);
  border: 1px solid var(--line-2); border-radius: 10px; padding: 11px 12px; min-height: 44px; width: 100%;
  transition: border-color .2s, box-shadow .2s;
}
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--ink-3); }
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; box-shadow: 0 0 0 5px var(--accent-soft); }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.form-note { font: 400 12.5px/1.5 var(--body); color: var(--ink-3); }
.form-status { font: 500 13px/1.5 var(--body); color: var(--accent-text); }

/* ---------- 17. Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 36px 48px; background: var(--bg-band); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; font: 400 13px/1.6 var(--body); color: var(--ink-3); }
.site-footer a { color: var(--ink-2); transition: color .2s; }
.site-footer a:hover { color: var(--accent-text); }
.site-footer ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; }

/* ---------- 18. Motion ---------- */
/* blocks rise into view; main.js adds .reveal only when motion is welcome.
   Kept short and shallow so a fast scroll or a nav jump never lands on an empty screen. */
.reveal { transition: opacity .45s ease, transform .5s var(--ease); transition-delay: calc(var(--d, 0) * 60ms); }
.reveal:not(.in) { opacity: 0; transform: translateY(14px); }
.section-head.reveal:not(.in) .eyebrow::before { transform: scaleX(0); }

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes redraw { from { stroke-dasharray: 1; stroke-dashoffset: 1; } to { stroke-dasharray: 1; stroke-dashoffset: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } }
@keyframes grow { from { transform: scaleX(0); } }
@keyframes wave { to { transform: translateX(-40px); } }
@keyframes bob { 50% { transform: translateY(2px); } }
@keyframes march { to { background-position: 0 7px; } }
@keyframes fadein { from { opacity: 0; transform: translateY(3px); } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes ping {
  from { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent); }
  to { box-shadow: 0 0 0 9px transparent; }
}
@keyframes ping-dot {
  from { box-shadow: 0 0 0 0 color-mix(in srgb, var(--good) 55%, transparent); }
  to { box-shadow: 0 0 0 7px transparent; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}