/* SPDX-License-Identifier: MIT
   Copyright (c) 2025-2026 yujiangxian
   Ocean theme tokens mirrored from app/web/src/styles/globals.css */

:root {
  --bg: #080c14;
  --panel: #0e1626;
  --panel-muted: #121c2e;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-active: rgba(255, 255, 255, 0.15);
  --primary: #48cae4;
  --primary-dim: #0096c7;
  --mint: #48e5c2;
  --amber: #f4a261;
  --text-primary: #e0f7fa;
  --text-secondary: #93b8c5;
  --text-muted: #5a8a9a;

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --maxw: 940px;
  --radius: 14px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--text-primary);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 3px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  margin-right: auto;
}

.brand:hover {
  color: var(--text-primary);
}

.brand__mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--primary);
  flex-shrink: 0;
}

.brand__mark svg {
  width: 17px;
  height: 17px;
  color: var(--bg);
}

.brand__name {
  font-weight: 620;
  font-size: 16px;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.brand__sub {
  display: block;
  font-size: 10.5px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav__links a {
  color: var(--text-secondary);
  font-size: 14px;
}

.nav__links a:hover {
  color: var(--text-primary);
}

.lang {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 11px;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.lang:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}

/* ---------- Sections ---------- */

.section {
  padding: 84px 0;
  border-top: 1px solid var(--border);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.section__title {
  font-size: clamp(23px, 3vw, 29px);
  font-weight: 640;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  line-height: 1.25;
}

.section__lead {
  font-size: 16.5px;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 0 0 40px;
}

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

.hero {
  padding: clamp(64px, 9vw, 104px) 0 76px;
}

.hero__title {
  font-size: clamp(30px, 4.6vw, 46px);
  font-weight: 680;
  letter-spacing: -0.032em;
  line-height: 1.14;
  margin: 0 0 22px;
  max-width: 20ch;
  text-wrap: balance;
}

.hero__lead {
  font-size: 17.5px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 0 18px;
}

.hero__lead--last {
  margin-bottom: 34px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 550;
  padding: 11px 21px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: #04141c;
}

.btn--primary:hover {
  background: #66d6ec;
  color: #04141c;
}

.btn--ghost {
  border-color: var(--border);
  color: var(--text-primary);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
  background: var(--surface);
}

/* ---------- Screenshot ---------- */

.shot {
  margin: 56px 0 0;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel);
  overflow: hidden;
}

.shot__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-muted);
}

.shot__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.shot__path {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot__caption {
  margin: 12px 0 0;
  font-size: 13.5px;
  color: var(--text-muted);
}

/* ---------- Prose ---------- */

.prose p {
  font-size: 16.5px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 0 20px;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose strong {
  color: var(--text-primary);
  font-weight: 560;
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--primary);
  background: rgba(72, 202, 228, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------- Turn steps ---------- */

.steps {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  border-left: 1px solid var(--border);
}

.steps li {
  position: relative;
  padding: 0 0 26px 26px;
}

.steps li:last-child {
  padding-bottom: 0;
}

.steps li::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}

.steps__what {
  font-size: 15.5px;
  font-weight: 560;
  margin: 0 0 3px;
}

.steps__how {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin: 0;
}

/* ---------- Spec list ---------- */

.spec {
  border-top: 1px solid var(--border);
}

.spec__row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 28px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.spec__key {
  font-size: 14.5px;
  font-weight: 560;
  color: var(--text-primary);
  padding-top: 1px;
}

.spec__val {
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0;
}

.spec__val code {
  font-size: 13px;
}

/* ---------- Status ---------- */

.status__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.status__row:first-child {
  border-top: 1px solid var(--border);
}

.status__name {
  font-size: 15px;
}

.status__meta {
  display: block;
  font-size: 13.5px;
  color: var(--text-muted);
}

.pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.pill--live {
  color: var(--mint);
}

.pill--wip {
  color: var(--amber);
}

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

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 36px;
}

.contact__item {
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 0 0 6px;
}

.contact__value {
  font-size: 15px;
  margin: 0;
  word-break: break-word;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
  color: var(--text-muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .nav__links {
    display: none;
  }

  .section {
    padding: 60px 0;
  }

  .spec__row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .hero__cta .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}