/* ===========================================================
   AICloud Limited — Midnight + Aurora theme
   =========================================================== */

:root {
  --bg: #060913;
  --bg-2: #0a0f1f;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #e8edf7;
  --muted: #99a6bd;
  --faint: #6b7794;

  --cyan: #22d3ee;
  --blue: #60a5fa;
  --indigo: #818cf8;
  --violet: #c084fc;

  --grad: linear-gradient(120deg, #22d3ee 0%, #818cf8 45%, #c084fc 100%);
  --grad-soft: linear-gradient(120deg, rgba(34,211,238,.18), rgba(192,132,252,.18));

  --radius: 18px;
  --radius-lg: 26px;
  --maxw: 1180px;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  --glow: 0 0 0 1px rgba(129,140,248,.25), 0 18px 60px -12px rgba(129,140,248,.35);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, .brand-name {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

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

.container { width: min(var(--maxw), 92vw); margin-inline: auto; }

.section { padding: clamp(70px, 11vw, 140px) 0; position: relative; }

/* ---------- Background aurora ---------- */
.bg-aurora {
  position: fixed; inset: 0; z-index: -3; overflow: hidden;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(129,140,248,.12), transparent 60%),
    radial-gradient(900px 600px at 0% 20%, rgba(34,211,238,.10), transparent 55%),
    var(--bg);
}
.orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: .55;
  animation: drift 22s var(--ease) infinite alternate;
}
.orb-1 { width: 520px; height: 520px; top: -120px; left: -80px;
  background: radial-gradient(circle, rgba(34,211,238,.55), transparent 70%); }
.orb-2 { width: 620px; height: 620px; top: 30%; right: -160px;
  background: radial-gradient(circle, rgba(192,132,252,.5), transparent 70%); animation-delay: -7s; }
.orb-3 { width: 480px; height: 480px; bottom: -160px; left: 30%;
  background: radial-gradient(circle, rgba(129,140,248,.5), transparent 70%); animation-delay: -13s; }

@keyframes drift {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(60px, 50px) scale(1.15); }
}

.bg-grid {
  position: absolute; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 80%);
}

#particles {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
}

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--grad); z-index: 100; box-shadow: 0 0 12px rgba(129,140,248,.7);
  transition: width .1s linear;
}

/* ---------- Navbar ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8, 12, 24, 0.72);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 11px; font-family: "Space Grotesk"; font-weight: 700; font-size: 15px;
  color: #060913; background: var(--grad);
  box-shadow: 0 6px 18px -4px rgba(129,140,248,.6);
}
.brand-name { font-size: 19px; letter-spacing: -0.03em; }
.brand-dot { color: var(--cyan); }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { color: var(--muted); font-size: 15px; font-weight: 500; transition: color .25s; position: relative; }
.nav-links a:not(.nav-cta):hover { color: var(--text); }
.nav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--grad); transition: width .3s var(--ease);
}
.nav-links a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  padding: 9px 18px; border-radius: 999px; color: var(--text) !important;
  border: 1px solid var(--border-strong); background: var(--surface);
  transition: all .25s var(--ease);
}
.nav-cta:hover { background: var(--grad-soft); border-color: var(--indigo); transform: translateY(-1px); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px; cursor: pointer;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; transition: all .28s var(--ease); white-space: nowrap;
}
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn .arrow { transition: transform .28s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary { background: var(--grad); color: #050810; box-shadow: 0 12px 30px -10px rgba(129,140,248,.65); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 42px -10px rgba(129,140,248,.8); }

.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--indigo); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 72px; position: relative; }
.hero-inner { text-align: center; max-width: 920px; margin-inline: auto; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 500;
  color: var(--muted); background: var(--surface); border: 1px solid var(--border);
  letter-spacing: .02em; margin-bottom: 28px;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(34,211,238,.6); animation: pulse 2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,211,238,.6); }
  70% { box-shadow: 0 0 0 10px rgba(34,211,238,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,211,238,0); }
}

.hero-title {
  font-size: clamp(2.6rem, 6.2vw, 5rem); font-weight: 700; margin-bottom: 26px;
}
.type-wrap { display: inline; }
.typed { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.caret { display: inline-block; width: 3px; background: var(--cyan); margin-left: 2px;
  animation: blink 1s steps(1) infinite; vertical-align: -6px; height: .9em; border-radius: 2px; }
@keyframes blink { 50% { opacity: 0; } }

.hero-sub { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted); max-width: 720px;
  margin: 0 auto 36px; }
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 46px; }

.hero-trust { display: flex; align-items: center; gap: 12px; justify-content: center; flex-wrap: wrap; }
.trust-label { font-size: 13px; color: var(--faint); text-transform: uppercase; letter-spacing: .12em; }
.flagchip { font-size: 14px; padding: 6px 14px; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted); }

.scroll-hint { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); }
.mouse { width: 24px; height: 38px; border: 2px solid var(--border-strong); border-radius: 14px;
  display: block; position: relative; }
.mouse::before { content: ""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 7px; border-radius: 2px; background: var(--cyan); animation: scrollDot 1.6s infinite; }
@keyframes scrollDot { 0% { opacity: 0; top: 7px; } 40% { opacity: 1; } 80% { opacity: 0; top: 18px; } }

/* ---------- Stats ---------- */
.stats { padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  padding: 30px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(10px); }
.stat { text-align: center; }
.stat-num { display: block; font-family: "Space Grotesk"; font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { font-size: 14px; color: var(--muted); }

/* ---------- Section headings ---------- */
.section-eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: 13px; font-weight: 600;
  color: var(--cyan); margin-bottom: 14px; }
.section-title { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin-bottom: 18px; }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-desc { color: var(--muted); font-size: 1.06rem; }

.lead { font-size: 1.12rem; color: var(--text); margin-bottom: 18px; }
.muted { color: var(--muted); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.about-points { list-style: none; margin-top: 26px; display: grid; gap: 14px; }
.about-points li { display: flex; gap: 12px; color: var(--muted); font-size: 1.02rem; }
.tick { color: var(--cyan); font-weight: 700; flex-shrink: 0; }

.glass-card { background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.float { animation: float 6s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-14px); } }

.terminal-head { display: flex; align-items: center; gap: 7px; padding: 4px 6px 14px; border-bottom: 1px solid var(--border); }
.terminal-head span { width: 11px; height: 11px; border-radius: 50%; background: #2a3550; }
.terminal-head span:nth-child(1) { background: #ff5f57; }
.terminal-head span:nth-child(2) { background: #febc2e; }
.terminal-head span:nth-child(3) { background: #28c840; }
.terminal-head em { margin-left: auto; font-style: normal; font-size: 12.5px; color: var(--faint); }
.terminal-body { padding: 18px 8px 6px; font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13.5px; line-height: 1.9; color: var(--muted); overflow-x: auto; }
.c-key { color: var(--cyan); } .c-str { color: #fbbf77; } .c-ok { color: #28c840; }
.c-dim { color: var(--faint); } .c-grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700; }

/* ---------- Cards grid ---------- */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; padding: 28px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .4s var(--ease);
  background: radial-gradient(500px 200px at var(--mx,50%) var(--my,0%), rgba(129,140,248,.16), transparent 60%);
}
.card[data-accent="cyan"]::after, .card[data-accent="violet"]::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; opacity: .85;
}
.card[data-accent="cyan"]::after { background: linear-gradient(90deg, var(--cyan), var(--indigo)); }
.card[data-accent="violet"]::after { background: linear-gradient(90deg, var(--indigo), var(--violet)); }
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--glow); }
.card:hover::before { opacity: 1; }

.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 16px; }
.card-icon { font-size: 30px; filter: drop-shadow(0 4px 10px rgba(0,0,0,.4)); }
.card-tag { font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted); padding: 5px 11px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--border); }
.card-title { font-size: 1.4rem; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.soon { font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--cyan); padding: 3px 9px; border-radius: 999px; background: rgba(34,211,238,.12); border: 1px solid rgba(34,211,238,.3); }
.card-text { color: var(--muted); font-size: .96rem; margin-bottom: 22px; }
.card-text strong { color: var(--text); font-weight: 600; }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px;
  flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--border); }
.market-badge { font-size: 13px; color: var(--faint); }
.card-link { font-size: 13.5px; font-weight: 600; color: var(--cyan); transition: color .25s; }
.card-link:hover { color: var(--violet); }
.muted-link { color: var(--faint); cursor: default; }

/* ---------- Capabilities ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap { padding: 30px 26px; border-radius: var(--radius); background: var(--surface);
  border: 1px solid var(--border); transition: all .35s var(--ease); }
.cap:hover { transform: translateY(-5px); background: var(--surface-2); border-color: var(--border-strong); }
.cap-icon { font-size: 30px; display: inline-grid; place-items: center; width: 58px; height: 58px;
  border-radius: 14px; background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 18px; }
.cap h3 { font-size: 1.22rem; margin-bottom: 10px; }
.cap p { color: var(--muted); font-size: .96rem; }

/* ---------- Markets ---------- */
.markets-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.market { padding: 30px 24px; border-radius: var(--radius); text-align: center;
  background: var(--surface); border: 1px solid var(--border); transition: all .35s var(--ease); }
.market:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--glow); }
.market-flag { font-size: 44px; display: block; margin-bottom: 14px; }
.market h3 { font-size: 1.2rem; margin-bottom: 10px; }
.market p { color: var(--muted); font-size: .93rem; }

/* ---------- Open source ---------- */
.os-card { position: relative; display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px;
  align-items: center; padding: clamp(34px, 5vw, 60px); border-radius: var(--radius-lg);
  background: linear-gradient(140deg, rgba(34,211,238,.07), rgba(192,132,252,.07));
  border: 1px solid var(--border-strong); overflow: hidden; }
.os-glow { position: absolute; width: 420px; height: 420px; right: -120px; top: -120px;
  background: radial-gradient(circle, rgba(129,140,248,.4), transparent 70%); filter: blur(40px); }
.os-content { position: relative; z-index: 1; }
.os-content .btn { margin-top: 10px; }
.os-stats { position: relative; z-index: 1; display: grid; gap: 14px; }
.os-stat { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 4px 14px;
  padding: 16px 18px; border-radius: 14px; background: rgba(8,12,24,.45); border: 1px solid var(--border); }
.os-stat span { grid-row: span 2; font-size: 26px; }
.os-stat strong { font-family: "Space Grotesk"; font-size: 1.02rem; }
.os-stat em { font-style: normal; color: var(--muted); font-size: .86rem; }

/* ---------- Contact ---------- */
.contact-inner { text-align: center; max-width: 760px; margin-inline: auto;
  padding: clamp(40px, 6vw, 72px); border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--border-strong); backdrop-filter: blur(12px); }
.contact-title { font-size: clamp(1.8rem, 3.8vw, 2.8rem); margin-bottom: 18px; }
.contact-sub { color: var(--muted); font-size: 1.08rem; margin-bottom: 34px; }
.contact-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.contact-note { font-size: 13.5px; color: var(--faint); }

/* Contact form */
.contact-form { max-width: 640px; margin: 6px auto 26px; text-align: left; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 13px; color: var(--muted); font-weight: 500; letter-spacing: .02em; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 13px 15px; border-radius: 12px; font: inherit; font-size: 15px;
  color: var(--text); background: rgba(8, 12, 24, .5); border: 1px solid var(--border-strong);
  transition: border-color .25s, box-shadow .25s; resize: vertical;
}
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--faint); }
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--indigo); box-shadow: 0 0 0 3px rgba(129, 140, 248, .18);
}
.form-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 4px; justify-content: center; }
.form-status { margin-top: 16px; font-size: 14px; min-height: 20px; text-align: center; }
.form-status.ok { color: #34d399; }
.form-status.err { color: #f87171; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } .form-actions { flex-direction: column; } .form-actions .btn { justify-content: center; } }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 64px 0 30px; margin-top: 30px;
  background: linear-gradient(to bottom, transparent, rgba(8,12,24,.6)); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.footer-brand p { color: var(--muted); font-size: .95rem; margin-top: 16px; max-width: 320px; }
.footer-col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--muted); font-size: .95rem; margin-bottom: 11px; transition: color .25s; }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; padding-top: 26px; border-top: 1px solid var(--border); color: var(--faint); font-size: 13.5px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 4px;
    background: rgba(8,12,24,.96); backdrop-filter: blur(20px); padding: 20px 24px 30px;
    border-bottom: 1px solid var(--border); transform: translateY(-130%); transition: transform .4s var(--ease);
    align-items: stretch;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 12px 4px; font-size: 16px; }
  .nav-links a:not(.nav-cta)::after { display: none; }
  .nav-cta { text-align: center; margin-top: 8px; }
  .nav-toggle { display: flex; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .os-card { grid-template-columns: 1fr; gap: 32px; }
  .cards-grid, .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .markets-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 600px) {
  .cards-grid, .cap-grid, .markets-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .trust-label { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .2s !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}