/* ============================================================
   CDSpace — deeptech aesthetic
   ============================================================ */

:root {
  --bg: #0A0A0B;
  --bg-elev: #0F1012;
  --bg-soft: #14161A;
  --line: #1F2024;
  --line-soft: #15171B;
  --text: #F5F5F7;
  --text-dim: #9CA0A7;
  --text-faint: #5C616B;
  --accent: #00D4D8;
  --accent-soft: rgba(0, 212, 216, 0.12);
  --accent-line: rgba(0, 212, 216, 0.35);
  --max: 1320px;
  --pad: clamp(20px, 4vw, 56px);
  --section-pad-y: clamp(80px, 10vw, 140px);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: #000; }

/* ----------------------- Type system ----------------------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin: 0 0 24px;
  color: var(--text);
}

.section-lead {
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 56ch;
  margin: 0 0 40px;
}
.section-lead strong {
  color: var(--accent);
  font-weight: 500;
  letter-spacing: .02em;
}

/* ----------------------- Brand mark ----------------------- */

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
}
.brand-logo {
  display: block;
  height: 28px;
  width: auto;
}
.brand-logo--footer { height: 24px; }
.nav.scrolled .brand-logo { height: 24px; }
@media (max-width: 520px) {
  .brand-logo { height: 22px; }
}

/* ----------------------- Nav ----------------------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad);
  background: transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease), padding .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 10, 11, 0.78);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
  padding: 14px var(--pad);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--text-dim);
  position: relative;
  padding: 6px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right .3s var(--ease);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--text);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    inset: 0 0 0 0;
    background: rgba(10, 10, 11, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 20px; }
}

/* ----------------------- Hero ----------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 var(--pad);
  overflow: hidden;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: brightness(0.7) contrast(1.05);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(10,10,11,0.6) 0%, rgba(10,10,11,0.2) 40%, rgba(10,10,11,0.85) 100%),
    radial-gradient(ellipse at 70% 50%, transparent 0%, rgba(10,10,11,0.5) 80%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 920px;
  padding: 80px 0 40px;
}
.hero-title {
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.025em;
  font-weight: 500;
  margin: 0 0 28px;
}
.hero-title .accent {
  color: var(--accent);
  font-weight: 400;
}
.hero-sub {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--text-dim);
  max-width: 52ch;
  margin: 0 0 40px;
  line-height: 1.55;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.hero-scroll svg { animation: scrollHint 1.8s ease-in-out infinite; }
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: .55; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ----------------------- Buttons ----------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s var(--ease);
  position: relative;
  background: transparent;
  color: var(--text);
}
.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}
.btn-ghost {
  border-color: var(--line);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.platform {
  position: relative;
  padding: var(--section-pad-y) var(--pad);
  border-top: 1px solid var(--line);
}
.platform--spot {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(0, 212, 216, 0.06), transparent 60%),
    var(--bg);
}
.platform--snap {
  background:
    radial-gradient(ellipse at 20% 80%, rgba(0, 212, 216, 0.05), transparent 60%),
    var(--bg);
}

.platform-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}
.platform-grid--reverse .platform-copy { order: 2; }
.platform-grid--reverse .platform-visual { order: 1; }

@media (max-width: 900px) {
  .platform-grid { grid-template-columns: 1fr; gap: 48px; }
  .platform-grid--reverse .platform-copy { order: 2; }
  .platform-grid--reverse .platform-visual { order: 1; }
}

.platform-visual {
  position: relative;
  padding: 20px;
}
.platform-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.05), transparent 60%),
    radial-gradient(circle at 30% 40%, rgba(0,212,216,0.06), transparent 60%),
    #2A2D33;
  z-index: 0;
}
.platform-visual::after {
  content: '';
  position: absolute;
  top: -1px; left: -1px;
  width: 14px; height: 14px;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--accent);
}
.platform-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  filter: drop-shadow(0 20px 30px rgba(0,0,0,0.25));
}
.platform-tag {
  position: absolute;
  bottom: 16px;
  left: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: #2A2D33;
  padding: 6px 12px;
  border: 1px solid var(--line);
  z-index: 2;
}

/* KPIs (SPOT) */
.kpis {
  list-style: none;
  padding: 0;
  margin: 40px 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.kpis li {
  padding: 24px 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.kpi-value {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.kpi-value small {
  font-size: 0.55em;
  color: var(--accent);
  margin-left: 2px;
  font-weight: 400;
}
.kpi-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* Capabilities */
.capabilities {
  margin-top: 36px;
}
.capabilities-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 16px;
}
.capabilities ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.capabilities li {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
  color: var(--text);
  line-height: 1.5;
}
.capabilities li:last-child { border-bottom: 1px solid var(--line); }
.capabilities li span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: .1em;
  padding-top: 3px;
  min-width: 22px;
}

/* Specs (SNAP) */
.specs {
  margin: 36px 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (max-width: 520px) {
  .specs { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: 1fr; }
}
.spec {
  padding: 14px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.spec-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.spec-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.applications-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 28px 0 12px;
}
.applications {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  margin: 0;
}

/* ----------------------- Contact ----------------------- */

.contact {
  padding: var(--section-pad-y) var(--pad);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,212,216,0.06), transparent 50%),
    var(--bg);
}
.contact-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: start;
}
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-details {
  margin: 36px 0 0;
  padding: 0;
  display: grid;
  gap: 24px;
}
.contact-details div { display: grid; gap: 4px; }
.contact-details dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.contact-details dd {
  margin: 0;
  font-size: 16px;
  color: var(--text);
}
.contact-details dd a { color: var(--text); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.contact-details dd a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* Form */
.contact-form {
  display: grid;
  gap: 20px;
  padding: 32px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 520px) {
  .field-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
}
.field { display: grid; gap: 8px; }
.field label,
.checkbox span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.field label span { color: var(--accent); }
.field input,
.field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  outline: none;
  transition: border-color .25s var(--ease);
}
.field input:focus,
.field textarea:focus {
  border-bottom-color: var(--accent);
}
.field textarea {
  resize: vertical;
  min-height: 90px;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}
.checkbox input {
  appearance: none;
  width: 16px; height: 16px;
  border: 1px solid var(--line);
  background: transparent;
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
  position: relative;
  transition: border-color .2s var(--ease);
}
.checkbox input:checked {
  border-color: var(--accent);
  background: var(--accent);
}
.checkbox input:checked::after {
  content: '';
  position: absolute;
  left: 4px; top: 0;
  width: 5px; height: 10px;
  border: solid #000;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.checkbox span {
  font-size: 11px;
  line-height: 1.5;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-dim);
  font-family: var(--font-sans);
}

.hp { display: none !important; }

.cf-turnstile { margin: 4px 0 20px; }

.form-status {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  margin: 0;
  min-height: 18px;
}
.form-status.success { color: var(--accent); }
.form-status.error { color: #ff7a7a; }

/* ----------------------- Footer ----------------------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 48px var(--pad) 32px;
  background: var(--bg);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; text-align: left; gap: 20px; }
}
.footer-brand p,
.footer-meta p {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  letter-spacing: .06em;
}
.footer-meta { text-align: center; }
.footer-meta p { margin: 4px 0; }
.footer-social { text-align: right; }
.footer-social a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
}
@media (max-width: 720px) {
  .footer-meta, .footer-social { text-align: left; }
}

/* ----------------------- Reveal animations ----------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-scroll svg { animation: none; }
  html { scroll-behavior: auto; }
}