/* ============================================================
   schr.ai — site stylesheet
   World: warm paper / near-black dual themes, Inter, ink-blue
   accent, Schraffur (cross-hatch) signature motif.
   ============================================================ */

@font-face {
  font-family: "Inter var";
  src: url("../fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fbfaf7;
  --surface: #f4f2ec;
  --elevated: #ece9e1;
  --fg: #1a1815;
  --muted: #6b665d;
  --border: rgba(26, 24, 21, 0.11);
  --border-strong: rgba(26, 24, 21, 0.22);
  --accent: #2447c9;
  --accent-hover: #1c3aac;
  --accent-ink: #1d3cb0;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(36, 71, 201, 0.07);
  --accent-line: rgba(36, 71, 201, 0.28);
  --hatch-line: rgba(26, 24, 21, 0.10);
  --hatch-accent: rgba(36, 71, 201, 0.10);
  --code-bg: #14161d;
  --code-fg: #d7dae3;
  --code-muted: #99a0b3;
  --code-key: #8fa5ff;
  --code-str: #a8c890;
  --code-accent: #e0b06a;
  --shadow: 0 1px 2px rgba(26, 24, 21, 0.05), 0 12px 32px -12px rgba(26, 24, 21, 0.18);
  --shadow-lg: 0 2px 4px rgba(26, 24, 21, 0.06), 0 24px 64px -16px rgba(26, 24, 21, 0.25);
  --ok: #2f7a45;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0b0b0d;
  --surface: #131318;
  --elevated: #1c1c23;
  --fg: #e7e6e2;
  --muted: #98948c;
  --border: rgba(231, 230, 226, 0.11);
  --border-strong: rgba(231, 230, 226, 0.24);
  --accent: #6180ff;
  --accent-hover: #7b95ff;
  --accent-ink: #97abff;
  --accent-contrast: #0b0b0d;
  --accent-soft: rgba(97, 128, 255, 0.09);
  --accent-line: rgba(97, 128, 255, 0.34);
  --hatch-line: rgba(231, 230, 226, 0.09);
  --hatch-accent: rgba(97, 128, 255, 0.13);
  --code-bg: #101218;
  --code-fg: #d7dae3;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px -12px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, 0.5), 0 24px 64px -16px rgba(0, 0, 0, 0.7);
  --ok: #6fbf85;
  color-scheme: dark;
}


/* ---------- reset ---------- */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter var", Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }

h1, h2, h3, h4, p { margin: 0; }

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code, pre, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

::selection { background: var(--accent); color: var(--accent-contrast); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

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

/* ---------- schraffur (hatching) motif ---------- */

.demo-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.55rem;
}

/* ---------- layout ---------- */

.wrap {
  width: min(100% - 3rem, 72rem);
  margin-inline: auto;
}

.section { padding-block: clamp(4.5rem, 9vw, 7.5rem); }

/* the hatched rule is the section separator — the motif at work */
.section + .section {
  background-image: repeating-linear-gradient(
    -45deg,
    var(--border-strong) 0,
    var(--border-strong) 1px,
    transparent 1px,
    transparent 6px
  );
  background-size: 100% 10px;
  background-repeat: no-repeat;
  background-position: top left;
}

.section-head { max-width: 46rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); }

h1 {
  font-size: clamp(2.7rem, 6.5vw, 4.4rem);
  line-height: 1.05;
  font-weight: 750;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.12;
  font-weight: 720;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

h3 {
  font-size: 1.3rem;
  line-height: 1.3;
  font-weight: 650;
  letter-spacing: -0.015em;
}

.lede {
  font-size: clamp(1.1rem, 1.8vw, 1.25rem);
  line-height: 1.65;
  color: var(--muted);
  max-width: 62ch;
  margin-top: 1.25rem;
}

.muted { color: var(--muted); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.55rem;
  border-radius: 10px;
  border: 1px solid transparent;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 160ms cubic-bezier(0.22, 1, 0.36, 1),
              border-color 160ms cubic-bezier(0.22, 1, 0.36, 1),
              transform 160ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 160ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: var(--shadow-lg); }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--fg); background: var(--accent-soft); }

.btn .arrow { transition: transform 160ms cubic-bezier(0.22, 1, 0.36, 1); }
.btn:hover .arrow { transform: translateX(3px); }

.btn[disabled] { opacity: 0.55; cursor: not-allowed; }

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  min-height: 4.25rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.logo:hover { text-decoration: none; }
.logo .logo-mark { color: var(--accent-ink); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin-left: auto;
}

.nav-links a {
  color: var(--muted);
  font-weight: 550;
  font-size: 0.975rem;
}
.nav-links a:hover { color: var(--fg); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--fg); }
.nav-links a.nav-cta,
.nav-links a.nav-cta:hover { color: var(--accent-contrast); }

.nav-cta { margin-left: 0.5rem; }
.nav .btn { padding: 0.55rem 1.15rem; font-size: 0.95rem; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 160ms, border-color 160ms;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--border-strong); }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.nav-burger {
  display: none;
  margin-left: auto;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 820px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem 1.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 0.25rem; border-bottom: 1px solid var(--border); }
  .nav-links a:last-of-type { border-bottom: 0; }
  .nav-cta { margin: 0.75rem 0 0; }
  .nav-burger { display: inline-flex; }
  .nav-inner .theme-toggle { margin-left: 0; }
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding-block: clamp(4.5rem, 10vw, 8rem) clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}

.hero-hatch {
  position: absolute;
  inset: 0 0 auto auto;
  width: min(52vw, 640px);
  height: 100%;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--hatch-line) 0,
    var(--hatch-line) 1px,
    transparent 1px,
    transparent 8px
  );
  -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 30%, transparent 95%);
  mask-image: linear-gradient(to left, rgba(0,0,0,1) 30%, transparent 95%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 6fr);
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: center;
}

.hero .cursor {
  display: inline-block;
  width: 0.55em;
  height: 0.08em;
  margin-left: 0.06em;
  background: var(--accent);
  vertical-align: baseline;
  animation: caret 1.1s steps(1) infinite;
}

@keyframes caret { 50% { opacity: 0; } }

.hero .accent-word { color: var(--accent-ink); }

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.25rem;
}

.hero-note {
  margin-top: 1.4rem;
  font-size: 0.925rem;
  color: var(--muted);
}
.hero-note strong { color: var(--fg); font-weight: 600; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-hatch { width: 100%; height: 40%; }
}

/* ---------- code panel ---------- */

.code-panel {
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-size: 0.82rem;
  line-height: 1.75;
}

.code-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--code-muted);
  font-size: 0.78rem;
}

.code-dots { display: flex; gap: 0.38rem; }
.code-dots span {
  width: 0.68rem;
  height: 0.68rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.code-title { margin-left: 0.4rem; }

.code-panel pre {
  margin: 0;
  padding: 1.1rem 1.25rem 1.3rem;
  overflow-x: auto;
  white-space: pre;
}

.code-panel .ln {
  display: inline-block;
  width: 2ch;
  margin-right: 1.25ch;
  color: var(--code-muted);
  text-align: right;
  user-select: none;
}

.code-panel .c { color: var(--code-muted); font-style: italic; }
.code-panel .k { color: var(--code-key); }
.code-panel .s { color: var(--code-str); }
.code-panel .a { color: var(--code-accent); }

.code-status {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.65rem 1.25rem;
  color: var(--code-str);
  font-size: 0.78rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* reveal: applied by JS only, so no-JS stays fully visible */
.js .reveal { opacity: 0; transform: translateY(18px); }
.js .reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- services (what we build) ---------- */

.service {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(2.25rem, 4vw, 3.5rem);
}

.service + .service { border-top: 1px dashed var(--border-strong); }

.service:nth-child(even) .service-copy { order: 2; }
.service:nth-child(even) .service-demo { order: 1; }

.service-index {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.9rem;
}

.service-copy h3 { font-size: 1.6rem; }

.service-copy p { color: var(--muted); margin-top: 0.9rem; max-width: 52ch; }

.service-more {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.2rem;
  font-weight: 600;
}

@media (max-width: 900px) {
  .service { grid-template-columns: 1fr; }
  .service:nth-child(even) .service-copy { order: 1; }
  .service:nth-child(even) .service-demo { order: 2; }
}

/* demo vignettes */

.demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem;
  box-shadow: var(--shadow);
}

.chat { display: flex; flex-direction: column; gap: 0.7rem; }

.chat .msg {
  max-width: 85%;
  padding: 0.6rem 0.9rem;
  border-radius: 11px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.chat .from-agent {
  background: var(--elevated);
  border: 1px solid var(--border);
  border-top-left-radius: 4px;
  align-self: flex-start;
}

.chat .from-user {
  background: var(--accent);
  color: var(--accent-contrast);
  border-top-right-radius: 4px;
  align-self: flex-end;
}

.chat .meta {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.flow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.flow .node {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.45rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 550;
  white-space: nowrap;
}

.flow .node svg { color: var(--accent-ink); }

.flow .link {
  flex: 0 0 auto;
  color: var(--muted);
}

.flow-caption {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.doclist { display: flex; gap: 0.5rem; margin-bottom: 0.9rem; flex-wrap: wrap; }

.doclist .doc {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--muted);
  border: 1px dashed var(--border-strong);
  border-radius: 7px;
  padding: 0.28rem 0.6rem;
}

.phases { display: flex; flex-direction: column; gap: 0.6rem; }

.phase {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.9rem;
}

/* gantt variant: fixed name column so bar offsets align across rows */
.gantt .phase { grid-template-columns: 9.5rem minmax(0, 1fr) 3.9rem; }
.gantt .phase .name { white-space: normal; }

@media (max-width: 600px) {
  .gantt .phase {
    grid-template-columns: 1fr auto;
    row-gap: 0.3rem;
  }
  .gantt .phase .bar { grid-column: 1 / -1; }
}

.phase .bar {
  height: 8px;
  border-radius: 4px;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--accent-line) 0,
    var(--accent-line) 2px,
    var(--accent-soft) 2px,
    var(--accent-soft) 6px
  );
}

.phase .tag {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.phase .name { font-weight: 600; white-space: nowrap; }

/* ---------- approach steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.step {
  background: var(--bg);
  padding: clamp(1.6rem, 3vw, 2.4rem);
  position: relative;
}

.step:hover { background: var(--surface); }

.step-num {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  color: var(--accent-ink);
  margin-bottom: 1rem;
}

.step h3 { margin-bottom: 0.7rem; }

.step p { color: var(--muted); font-size: 0.98rem; }

.step .step-note {
  display: block;
  margin-top: 1.1rem;
  font-size: 0.83rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--fg);
  border-top: 1px dashed var(--border-strong);
  padding-top: 0.85rem;
}

@media (max-width: 760px) {
  .steps { grid-template-columns: 1fr; }
}

/* ---------- story ---------- */

.story-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

@media (max-width: 900px) {
  .story-grid { grid-template-columns: 1fr; }
}

.story-quote { margin: 1.4rem 0 0; }

.story-quote p {
  font-size: clamp(1.05rem, 1.7vw, 1.2rem);
  line-height: 1.65;
  color: var(--fg);
  max-width: 58ch;
}

.story-quote p + p { margin-top: 1rem; }

.era {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.era-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-size: 0.95rem;
  padding: 0.55rem 0.7rem;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 9px;
}

.era-year {
  flex: 0 0 3.2rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-ink);
}

.era-now { border-style: dashed; border-color: var(--accent-line); }

/* ---------- brain facets ---------- */

.facets {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.facet {
  background: var(--bg);
  padding: clamp(1.6rem, 3vw, 2.4rem);
}

.facet:hover { background: var(--surface); }

.facet h3 { margin-bottom: 0.7rem; }
.facet p { color: var(--muted); font-size: 0.98rem; }

@media (max-width: 860px) {
  .facets { grid-template-columns: 1fr; }
}

/* ---------- solutions ---------- */

.solution {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: clamp(1.6rem, 3.5vw, 2.75rem);
}

.solution + .solution { margin-top: 1.5rem; }

.sol-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  align-items: baseline;
  margin-bottom: 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.live-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--accent-ink);
  font-weight: 600;
}

.live-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.sol-tags .sector { color: var(--muted); }

.solution h3 { font-size: clamp(1.35rem, 2.4vw, 1.7rem); }

.solution > p { color: var(--muted); margin-top: 0.8rem; max-width: 62ch; }

.sol-media { margin: 1.4rem 0 0; }

.sol-media img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.sol-media figcaption {
  margin-top: 0.55rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.76rem;
  color: var(--muted);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--border-strong);
}

.stat-grid dt {
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  font-weight: 720;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.stat-grid dd {
  margin: 0.1rem 0 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (max-width: 600px) {
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.more-label { margin: 2.5rem 0 0.8rem; }

/* ---------- pull quote ---------- */

.pullquote {
  margin: clamp(2.5rem, 5vw, 4rem) auto 0;
  max-width: 46rem;
  padding-left: 1.75rem;
  border-left: none;
  position: relative;
}

.pullquote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3rem;
  bottom: 0.3rem;
  width: 10px;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--accent-line) 0,
    var(--accent-line) 1.5px,
    transparent 1.5px,
    transparent 5px
  );
}

.pullquote p {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.55;
  font-weight: 550;
  letter-spacing: -0.012em;
  text-wrap: balance;
}

.pullquote cite {
  display: block;
  margin-top: 0.9rem;
  font-style: normal;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ---------- internship band (index) ---------- */

.band {
  border: 1px solid var(--accent-line);
  border-radius: 18px;
  padding: clamp(2rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(to right, var(--bg) 45%, transparent),
    repeating-linear-gradient(-45deg, var(--hatch-accent) 0, var(--hatch-accent) 1px, transparent 1px, transparent 7px);
}

.band h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.band p { color: var(--muted); margin-top: 0.6rem; max-width: 56ch; }

@media (max-width: 760px) {
  .band { grid-template-columns: 1fr; }
}

/* ---------- contact / application forms ---------- */

.form-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
}

.expect { display: flex; flex-direction: column; gap: 1rem; }

.expect h3 { margin-bottom: 0.35rem; }

.expect-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: var(--muted);
  font-size: 0.98rem;
}

.expect-item svg { flex: 0 0 auto; margin-top: 0.22rem; color: var(--accent-ink); }

.expect .email-alt {
  margin-top: 1rem;
  padding-top: 1.4rem;
  border-top: 1px dashed var(--border-strong);
  font-size: 0.95rem;
  color: var(--muted);
}

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow);
}

.form-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.form-progress .track {
  flex: 1;
  height: 8px;
  margin-inline: 1rem;
  border-radius: 4px;
  background: var(--elevated);
  overflow: hidden;
}

.form-progress .fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: 4px;
  background-image: repeating-linear-gradient(
    -45deg,
    var(--accent) 0,
    var(--accent) 3px,
    var(--accent-hover) 3px,
    var(--accent-hover) 6px
  );
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.field { display: flex; flex-direction: column; gap: 0.45rem; margin-bottom: 1.25rem; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .field-row { grid-template-columns: 1fr; }
}

.field label { font-weight: 600; font-size: 0.95rem; }

.field .optional { color: var(--muted); font-weight: 450; font-size: 0.85rem; }

.field input[type="text"],
.field input[type="email"],
.field input[type="url"],
.field select,
.field textarea {
  font: inherit;
  font-size: 1rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  width: 100%;
  transition: border-color 160ms, box-shadow 160ms;
}

.field textarea { resize: vertical; min-height: 7.5rem; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--muted); opacity: 1; }

.field .hint {
  font-size: 0.83rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.field .error-msg { display: none; font-size: 0.85rem; color: #b3261e; }
[data-theme="dark"] .field .error-msg { color: #ff8f87; }

.field.invalid input,
.field.invalid select,
.field.invalid textarea { border-color: #b3261e; }
.field.invalid .error-msg { display: block; }

.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

@media (max-width: 600px) {
  .choice-grid { grid-template-columns: 1fr; }
}

.choice {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-weight: 550;
  cursor: pointer;
  transition: border-color 160ms, background-color 160ms;
}

.choice:hover { border-color: var(--accent); }

.choice input { accent-color: var(--accent); width: 1.05rem; height: 1.05rem; margin: 0; }

.choice:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.confirm {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.93rem;
  color: var(--muted);
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  margin-bottom: 1.25rem;
  cursor: pointer;
}

.confirm input { accent-color: var(--accent); width: 1.05rem; height: 1.05rem; margin-top: 0.22rem; flex: 0 0 auto; }

.confirm strong { color: var(--fg); }

.confirm-error {
  display: none;
  font-size: 0.85rem;
  color: #b3261e;
  margin: -0.85rem 0 1.25rem;
}
.confirm.invalid { border-color: #b3261e; }
.confirm.invalid + .confirm-error { display: block; }
[data-theme="dark"] .confirm-error { color: #ff8f87; }

.form-status {
  display: none;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  font-size: 0.95rem;
}

.form-status.ok {
  display: block;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--fg);
}

.form-status.err {
  display: block;
  background: rgba(179, 38, 30, 0.08);
  border: 1px solid rgba(179, 38, 30, 0.4);
  color: var(--fg);
}

/* ---------- internship page: hero badge ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent-ink);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

/* ---------- how it works blocks ---------- */

.works { display: flex; flex-direction: column; gap: clamp(2.5rem, 5vw, 4rem); }

.work {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.work:nth-child(even) > .work-copy { order: 2; }
.work:nth-child(even) > .work-demo { order: 1; }

@media (max-width: 900px) {
  .work { grid-template-columns: 1fr; }
  .work:nth-child(even) > .work-copy { order: 1; }
  .work:nth-child(even) > .work-demo { order: 2; }
}

.plan-list { display: flex; flex-direction: column; gap: 0.55rem; }

.plan-list .row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.92rem;
  padding: 0.5rem 0.7rem;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 9px;
}

.plan-list .row svg { color: var(--accent-ink); flex: 0 0 auto; }

.plan-list .row .when {
  margin-left: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

.deploy-log {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--muted);
}

.deploy-log .ok-line { color: var(--ok); }
.deploy-log .accent-line-txt { color: var(--accent-ink); }

/* ---------- roadmap timeline ---------- */

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 46rem;
}

.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1.75rem;
  padding-block: 1.4rem;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: 8.35rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--border-strong) 0,
    var(--border-strong) 4px,
    transparent 4px,
    transparent 8px
  );
}

.tl-item:first-child::before { top: 1.9rem; }
.tl-item:last-child::before { bottom: auto; height: 1.9rem; }

.tl-when {
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  color: var(--accent-ink);
  padding-top: 0.3rem;
  white-space: nowrap;
}

.tl-body { position: relative; padding-left: 1.9rem; }

.tl-body::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.55rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.tl-item.milestone .tl-body::before { background: var(--accent); }

.tl-body h3 { font-size: 1.15rem; }

.tl-body p { color: var(--muted); font-size: 0.96rem; margin-top: 0.35rem; max-width: 52ch; }

.tl-note {
  display: inline-block;
  margin-top: 0.6rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px dashed var(--border-strong);
  border-radius: 7px;
  padding: 0.22rem 0.6rem;
}

@media (max-width: 620px) {
  .tl-item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
    padding-left: 1.9rem;
  }
  .tl-item::before { left: 5px; }
  .tl-item:first-child::before { top: 1.6rem; }
  .tl-item:last-child::before { height: 1.6rem; }
  .tl-when { text-align: left; padding-top: 0; }
  .tl-body { padding-left: 0; }
  .tl-body::before { display: none; }
  .tl-item::after {
    content: "";
    position: absolute;
    left: 0;
    top: 1.45rem;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--accent);
  }
  .tl-item.milestone::after { background: var(--accent); }
}

/* ---------- what you get (ledger) ---------- */

.ledger {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.ledger-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.3rem clamp(1.25rem, 3vw, 2rem);
  background: var(--bg);
}

.ledger-row + .ledger-row { border-top: 1px solid var(--border); }

.ledger-row:hover { background: var(--surface); }

.ledger-row .idx {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  color: var(--accent-ink);
}

/* tagged variant: word tags need a shared column so titles align */
.ledger.tagged .ledger-row { grid-template-columns: 7.5rem 1fr; }

@media (max-width: 600px) {
  .ledger.tagged .ledger-row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

.ledger-row h3 { font-size: 1.08rem; }

.ledger-row p { color: var(--muted); font-size: 0.95rem; margin-top: 0.25rem; }

/* ---------- real work section ---------- */

.builds {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

@media (max-width: 900px) {
  .builds { grid-template-columns: 1fr; }
}

.build {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.build .build-kind {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--accent-ink);
}

.build h3 { font-size: 1.12rem; }

.build p { color: var(--muted); font-size: 0.94rem; flex: 1; }

.build .build-demo {
  background: var(--code-bg);
  color: var(--code-muted);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 9px;
  padding: 0.7rem 0.85rem 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.76rem;
  line-height: 1.75;
}

.build .build-demo .demo-label { color: var(--code-muted); margin-bottom: 0.35rem; }
.build .build-demo .hl { color: var(--code-key); }
.build .build-demo .okl { color: var(--code-str); }

.build .stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--border-strong);
}

.build .stack span {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.14rem 0.5rem;
}

/* ---------- terms card ---------- */

.terms-card {
  max-width: 40rem;
  margin-inline: auto;
  border: 1px solid var(--accent-line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--surface);
}

.terms-head {
  padding: 1.9rem clamp(1.5rem, 4vw, 2.5rem) 1.5rem;
  border-bottom: 1px solid var(--border);
  background-image: repeating-linear-gradient(
    -45deg,
    var(--hatch-accent) 0,
    var(--hatch-accent) 1px,
    transparent 1px,
    transparent 7px
  );
}

.terms-head h3 { font-size: 1.35rem; }
.terms-head p { color: var(--muted); margin-top: 0.4rem; }

.terms-body { padding: 1.5rem clamp(1.5rem, 4vw, 2.5rem) 2rem; }

.terms-body ul {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.terms-body li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: 0.98rem;
}

.terms-body li svg { flex: 0 0 auto; margin-top: 0.25rem; color: var(--accent-ink); }

.terms-note { font-size: 0.88rem; color: var(--muted); margin-top: 1rem; }

/* ---------- FAQ ---------- */

.faq { max-width: 46rem; }

.faq details {
  border-bottom: 1px solid var(--border);
}

.faq summary {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.25rem 0.25rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary .q-idx {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: var(--accent-ink);
  flex: 0 0 auto;
}

.faq summary .chev {
  margin-left: auto;
  flex: 0 0 auto;
  color: var(--muted);
  transition: transform 240ms cubic-bezier(0.22, 1, 0.36, 1);
}

.faq details[open] summary .chev { transform: rotate(45deg); }

.faq .answer {
  padding: 0 0.25rem 1.4rem 2.6rem;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- apply steps ---------- */

.apply-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  counter-reset: applystep;
}

@media (max-width: 760px) {
  .apply-steps { grid-template-columns: 1fr; }
}

.apply-step {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem 1.5rem;
  background: var(--bg);
}

.apply-step::before {
  counter-increment: applystep;
  content: counter(applystep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.apply-step h3 { font-size: 1.1rem; margin-bottom: 0.45rem; }
.apply-step p { color: var(--muted); font-size: 0.94rem; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--border);
  padding-block: 3.5rem 2.5rem;
  background: var(--surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer .logo { font-size: 1.05rem; }

.footer-tag { color: var(--muted); font-size: 0.95rem; margin-top: 0.8rem; max-width: 34ch; }

.footer-email { display: inline-block; margin-top: 1rem; font-size: 0.95rem; }

.footer h3 {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
  font-weight: 650;
}

.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; }

.footer ul a { color: var(--fg); font-size: 0.95rem; }

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--muted);
}

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
  z-index: 100;
}

.skip-link:focus { left: 0; }

/* honeypot — visually gone, still in the DOM for bots to fill */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}