/* ============================================================
   AGICAD — design system
   Dark · technical · terminal-inspired
   Type: Space Grotesk (display/body) + JetBrains Mono (labels/code)
   ============================================================ */

:root {
  --bg: #0a0c0f;
  --bg-raise: #0e1116;
  --surface: #12161c;
  --surface-2: #161b22;
  --line: #1e242d;
  --line-strong: #2a323d;
  --text: #e8ecf1;
  --text-dim: #aab3bf;
  --muted: #717c8a;
  --acc: #34e39a;
  --acc-dim: rgba(52, 227, 154, 0.32);
  --acc-faint: rgba(52, 227, 154, 0.08);
  --acc-ink: #062b1c;
  --amber: #e3b341;
  --font-display: "Space Grotesk", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --container: 1160px;
  --radius: 4px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--acc); color: var(--acc-ink); }

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- type ---------- */

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  text-wrap: balance;
}

.display-xl { font-size: clamp(52px, 7.2vw, 104px); }
.display-lg { font-size: clamp(40px, 5vw, 68px); }
.display-md { font-size: clamp(30px, 3.4vw, 44px); }
.display-sm { font-size: clamp(22px, 2.2vw, 28px); }

.lede {
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.6;
  color: var(--text-dim);
  text-wrap: pretty;
  max-width: 56ch;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before { content: "//"; color: var(--acc); letter-spacing: 0; }

.accent { color: var(--acc); }
.dim { color: var(--text-dim); }

/* blinking cursor block */
.cursor {
  display: inline-block;
  width: 0.55em;
  height: 0.92em;
  background: var(--acc);
  margin-left: 0.08em;
  vertical-align: baseline;
  transform: translateY(0.1em);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

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

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(10, 12, 15, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 2px;
}
.logo .bracket { color: var(--acc); font-weight: 400; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-links a.active { color: var(--acc); }
.nav-links a.active::before { content: "["; margin-right: 2px; }
.nav-links a.active::after { content: "]"; margin-left: 2px; }

.nav-cta { display: flex; align-items: center; gap: 16px; }

.menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 14px;
  cursor: pointer;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 14px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--acc);
  color: var(--acc-ink);
  font-weight: 700;
}
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.08); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--acc-dim); color: var(--acc); }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn .arrow { transition: transform 0.15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- sections ---------- */

main { padding-top: 68px; }

.section { padding: 110px 0; }
.section + .section { border-top: 1px solid var(--line); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 64px;
  max-width: 720px;
}
.section-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.section-index b { color: var(--acc); font-weight: 500; }

/* ---------- cards ---------- */

.card {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s, background 0.2s;
}
.card:hover { border-color: var(--line-strong); background: var(--surface); }

.card-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.card h3 { font-size: 21px; letter-spacing: -0.02em; }

.card p { color: var(--text-dim); font-size: 15.5px; text-wrap: pretty; }

.card-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--acc);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.card-link .arrow { transition: transform 0.15s; }
.card:hover .card-link .arrow, .card-link:hover .arrow { transform: translateX(4px); }

/* ---------- grids ---------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ---------- browser frame (portfolio) ---------- */

.browser {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
a.browser-card:hover .browser, .browser:hover { border-color: var(--line-strong); }
.browser-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-raise);
}
.browser-dots { display: flex; gap: 6px; }
.browser-dots span {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--line-strong);
}
.browser-url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 3px 12px;
  flex: 1;
  max-width: 320px;
}
.browser image-slot { width: 100%; aspect-ratio: 16 / 9.6; }

/* ---------- code block ---------- */

.code {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.75;
  overflow: hidden;
}
.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.code pre { padding: 20px 24px; overflow-x: auto; }
.tok-k { color: #c792ea; }
.tok-s { color: var(--acc); }
.tok-c { color: var(--muted); }
.tok-f { color: #82aaff; }
.tok-n { color: var(--amber); }

/* ---------- tags / chips ---------- */

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 4px 10px;
  background: var(--bg-raise);
}

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

footer {
  border-top: 1px solid var(--line);
  padding: 72px 0 40px;
  background: var(--bg-raise);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col a { color: var(--text-dim); font-size: 15px; transition: color 0.15s; }
.footer-col a:hover { color: var(--acc); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.status-dot::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--acc);
  box-shadow: 0 0 8px var(--acc-dim);
}

/* ---------- reveal on scroll ---------- */

.reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .js .reveal.in { opacity: 1; transform: none; }
}

/* ---------- forms ---------- */

.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.field input, .field select, .field textarea {
  background: var(--bg-raise);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  padding: 13px 16px;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-faint);
}
.field.invalid input, .field.invalid textarea { border-color: #e35d5d; }
.field .err {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #e35d5d;
  display: none;
}
.field.invalid .err { display: block; }

/* ---------- misc ---------- */

.hr-label {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.hr-label::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.kbd {
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 2px 7px;
  color: var(--text-dim);
}

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-raise);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .menu-btn { display: block; }
  .nav-cta .btn { display: none; }
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   Page-specific styles (merged from design pages)
   ============================================================ */

/* ---------- home: hero ---------- */
.hero { padding: 130px 0 96px; position: relative; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.28;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, black 0%, transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; display: flex; flex-direction: column; gap: 32px; }
.hero h1 { max-width: 13ch; }
.hero h1 .line2 { color: var(--text-dim); }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px 28px;
  font-family: var(--font-mono); font-size: 13px;
  letter-spacing: 0.06em; color: var(--muted); margin-top: 26px;
}
.hero-meta span::before { content: "::"; color: var(--acc); margin-right: 10px; }

/* ---------- home: principles strip ---------- */
.principles { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-raise); }
.principles .container { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.principle { padding: 36px 32px; display: flex; flex-direction: column; gap: 8px; }
.principle + .principle { border-left: 1px solid var(--line); }
.principle .mono { color: var(--acc); }
.principle strong { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.principle p { font-size: 14.5px; color: var(--muted); line-height: 1.55; }

/* ---------- home: services cards ---------- */
.svc-card { display: flex; flex-direction: column; gap: 14px; min-height: 240px; }
.svc-card .card-index { margin-bottom: 8px; }
.svc-card p { flex: 1; }

/* ---------- home: process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { border-top: 1px solid var(--line-strong); padding-top: 24px; display: flex; flex-direction: column; gap: 12px; position: relative; }
.step::before { content: ""; position: absolute; top: -3.5px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--acc); }
.step .mono { color: var(--muted); }
.step h3 { font-size: 20px; }
.step p { font-size: 15px; color: var(--text-dim); }

/* ---------- home: work ---------- */
.work-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.work-card { display: flex; flex-direction: column; gap: 16px; }
.work-meta { display: flex; flex-direction: column; gap: 10px; }
.work-meta-row { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.work-meta h3 { font-size: 20px; }
.work-meta .mono { color: var(--muted); }
.work-more { margin-top: 48px; display: flex; justify-content: center; }

/* ---------- home: cta band ---------- */
.cta-band { text-align: left; }
.cta-band .container { display: flex; flex-direction: column; gap: 28px; align-items: flex-start; }
.cta-band h2 { max-width: 16ch; }

/* screenshot inside browser frame */
.browser .shot { width: 100%; aspect-ratio: 16 / 9.6; object-fit: cover; object-position: top; background: var(--surface-2); }

/* ---------- inner pages: hero ---------- */
.page-hero { padding: 110px 0 80px; border-bottom: 1px solid var(--line); }
.page-hero .container { display: flex; flex-direction: column; gap: 24px; }
.page-hero h1 { max-width: 18ch; }
.page-hero.no-line { border-bottom: none; padding-bottom: 64px; }

/* ---------- services ---------- */
.svc-detail { display: grid; grid-template-columns: 280px 1fr; gap: 48px; padding: 64px 0; }
.svc-detail + .svc-detail { border-top: 1px solid var(--line); }
.svc-detail-label { display: flex; flex-direction: column; gap: 12px; }
.svc-detail-label .mono { color: var(--acc); }
.svc-detail-label h2 { font-size: clamp(24px, 2.4vw, 30px); }
.svc-detail-body { display: flex; flex-direction: column; gap: 24px; }
.svc-detail-body > p { color: var(--text-dim); max-width: 62ch; text-wrap: pretty; }
.svc-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 32px; }
.svc-list li { font-size: 15.5px; color: var(--text-dim); display: flex; align-items: baseline; gap: 12px; }
.svc-list li::before { content: ">"; font-family: var(--font-mono); color: var(--acc); font-size: 13px; }
.stack-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.stack-item {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-raise);
  padding: 18px 12px; text-align: center; font-family: var(--font-mono); font-size: 13px;
  color: var(--text-dim); letter-spacing: 0.02em; transition: border-color 0.2s, color 0.2s;
}
.stack-item:hover { border-color: var(--acc-dim); color: var(--acc); }
.model-card { display: flex; flex-direction: column; gap: 14px; }
.model-card .mono { color: var(--acc); }
.model-card p { flex: 1; }
.model-card .model-fit {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--muted);
  border-top: 1px solid var(--line); padding-top: 14px; line-height: 1.6;
}

/* ---------- portfolio ---------- */
.work-list { display: flex; flex-direction: column; }
.project { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; padding: 80px 0; align-items: center; }
.project + .project { border-top: 1px solid var(--line); }
.project:nth-child(even) .project-media { order: 2; }
.project-info { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.project-info .mono { color: var(--muted); letter-spacing: 0.1em; }
.project-info h2 { font-size: clamp(26px, 2.6vw, 34px); }
.project-info p { color: var(--text-dim); text-wrap: pretty; }
.project-result { border-left: 2px solid var(--acc); padding-left: 16px; font-size: 15px; color: var(--text-dim); }
.project-result b { color: var(--text); font-weight: 600; }

/* ---------- about ---------- */
.about-split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.about-copy { display: flex; flex-direction: column; gap: 20px; }
.about-copy p { color: var(--text-dim); text-wrap: pretty; }
.about-copy p b { color: var(--text); font-weight: 600; }
.values { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.value { display: flex; flex-direction: column; gap: 10px; }
.value .mono { color: var(--acc); }
.value h3 { font-size: 19px; }
.value p { font-size: 15px; color: var(--text-dim); }

/* ---------- contact ---------- */
.contact-split { display: grid; grid-template-columns: 1fr 1.2fr; gap: 72px; align-items: start; padding-bottom: 110px; }
.contact-aside { display: flex; flex-direction: column; gap: 40px; }
.next-steps { display: flex; flex-direction: column; gap: 24px; }
.next-step { display: flex; gap: 16px; align-items: baseline; }
.next-step .mono { color: var(--acc); flex-shrink: 0; }
.next-step div { display: flex; flex-direction: column; gap: 4px; }
.next-step strong { font-size: 16.5px; font-weight: 600; }
.next-step p { font-size: 14.5px; color: var(--muted); }
.contact-direct { display: flex; flex-direction: column; gap: 10px; }
.contact-direct a { font-family: var(--font-mono); font-size: 15px; color: var(--acc); }
.contact-direct a:hover { text-decoration: underline; }
.contact-form {
  display: flex; flex-direction: column; gap: 22px;
  background: var(--bg-raise); border: 1px solid var(--line); border-radius: 8px; padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.form-status-msg {
  font-family: var(--font-mono); font-size: 13px; padding: 14px 16px;
  border-radius: var(--radius); display: none;
}
.form-status-msg.err-msg { display: block; border: 1px solid rgba(227,93,93,0.4); background: rgba(227,93,93,0.08); color: #e35d5d; }
.form-success {
  display: none; flex-direction: column; gap: 12px; padding: 28px;
  border: 1px solid var(--acc-dim); border-radius: var(--radius); background: var(--acc-faint);
}
.form-success.show { display: flex; }
.form-success .mono { color: var(--acc); }

/* ---------- legacy compatibility ----------
   Old pages (blog, case studies) reveal with .visible (main.js);
   keep them visible under the new .js .reveal rule as well. */
.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- responsive (page-specific) ---------- */
@media (max-width: 960px) {
  .principles .container { grid-template-columns: 1fr; }
  .principle + .principle { border-left: none; border-top: 1px solid var(--line); }
  .steps { grid-template-columns: 1fr 1fr; }
  .work-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .svc-detail { grid-template-columns: 1fr; gap: 24px; }
  .stack-grid { grid-template-columns: repeat(3, 1fr); }
  .svc-list { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; gap: 28px; }
  .project:nth-child(even) .project-media { order: 0; }
  .about-split { grid-template-columns: 1fr; gap: 40px; }
  .values { grid-template-columns: 1fr; }
  .contact-split { grid-template-columns: 1fr; gap: 48px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
}
@media (max-width: 600px) {
  .steps { grid-template-columns: 1fr; }
}