/* ============================================================
   Neclia — KINGTONE KT-S Platform Marketing Site
   Dark theme, B2B, responsive. Design tokens first.
   ============================================================ */
:root {
  --bg: #0b1020;
  --bg-grad-1: #0e1530;
  --bg-grad-2: #0a0f1f;
  --surface: #121a30;
  --surface-2: #172242;
  --border: #243154;
  --text: #e8edf7;
  --text-muted: #9aa7c2;
  --primary: #2dd4bf;      /* teal accent */
  --primary-2: #38bdf8;    /* sky */
  --primary-ink: #04201d;
  --danger: #f87171;
  --ok: #34d399;
  --radius: 14px;
  --radius-sm: 9px;
  --maxw: 1180px;
  --shadow: 0 18px 40px -22px rgba(0,0,0,.65);
  --font: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(56,189,248,.10), transparent 60%),
    radial-gradient(900px 500px at 0% 0%, rgba(45,212,191,.08), transparent 55%),
    linear-gradient(180deg, var(--bg-grad-1), var(--bg-grad-2));
  background-attachment: fixed;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 76px 0; }
.section-sm { padding: 46px 0; }
.muted { color: var(--text-muted); }
.center { text-align: center; }
h1, h2, h3 { line-height: 1.2; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 5vw, 50px); margin: 0 0 16px; }
h2 { font-size: clamp(24px, 3.4vw, 34px); margin: 0 0 12px; }
h3 { font-size: 19px; margin: 0 0 8px; }
p { margin: 0 0 14px; }

.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--primary); font-weight: 700; margin-bottom: 12px;
}

/* ---- Header / Nav ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11,16,32,.72);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: grid; place-items: center; color: var(--primary-ink); font-weight: 900; font-size: 16px;
}
.brand .sub { font-size: 12px; color: var(--text-muted); font-weight: 600; letter-spacing: .04em; }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--text-muted); font-weight: 600; font-size: 14px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 6px 10px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: .15s ease;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: var(--primary-ink); }
.btn-primary:hover { filter: brightness(1.07); text-decoration: none; }
.btn-ghost { border-color: var(--border); color: var(--text); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--primary); text-decoration: none; }
.btn-sm { padding: 8px 14px; font-size: 13px; }

/* ---- Hero ---- */
.hero { padding: 92px 0 64px; }
.hero .lead { font-size: clamp(16px, 2.2vw, 20px); color: var(--text-muted); max-width: 720px; }
.hero-cta { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 28px; }
.badge {
  font-size: 13px; color: var(--text-muted); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 999px; background: rgba(255,255,255,.02);
}

/* ---- Cards / grids ---- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card h3 { color: var(--text); }
.card .ico {
  width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center;
  background: rgba(45,212,191,.12); color: var(--primary); font-size: 22px; margin-bottom: 14px;
}

/* ---- Solutions grid (12 industries) ---- */
.industry-grid { grid-template-columns: repeat(3, 1fr); }
.industry-card {
  display: flex; flex-direction: column; gap: 8px;
  border: 1px solid var(--border); border-radius: var(--radius); padding: 22px;
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  transition: .15s ease;
}
.industry-card:hover { border-color: var(--primary); transform: translateY(-3px); text-decoration: none; }
.industry-card .num { font-size: 13px; color: var(--text-muted); font-weight: 700; }
.industry-card h3 { color: var(--text); margin: 2px 0; }
.industry-card p { color: var(--text-muted); font-size: 14px; margin: 0; }
.industry-card .more { margin-top: auto; color: var(--primary-2); font-weight: 700; font-size: 14px; }

/* ---- Deployment modes ---- */
.deploy-grid { grid-template-columns: repeat(3, 1fr); }
.deploy-card { position: relative; overflow: hidden; }
.deploy-card .tag {
  position: absolute; top: 16px; right: 16px; font-size: 12px; font-weight: 700;
  color: var(--primary-ink); background: var(--primary); padding: 4px 10px; border-radius: 999px;
}
.deploy-card ul { margin: 10px 0 0; padding-left: 18px; color: var(--text-muted); font-size: 14px; }
.deploy-card li { margin-bottom: 6px; }

/* ---- Features (S200/S300/S400) ---- */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; }
.feature-row + .feature-row { margin-top: 40px; }
.feature-row.reverse .feature-media { order: 2; }

/* ---- About dual-track ---- */
.dual { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 22px; }
.dual .pill {
  border: 1px solid var(--border); border-radius: 12px; padding: 16px; background: rgba(255,255,255,.02);
}
.dual .pill b { color: var(--primary); }

/* ---- Contact form ---- */
.contact-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; }
.form-card { background: linear-gradient(180deg, var(--surface), var(--surface-2)); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
label { display: block; font-size: 14px; font-weight: 600; margin: 14px 0 6px; color: var(--text); }
label .req { color: var(--primary); }
input, select, textarea {
  width: 100%; padding: 12px 13px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-family: inherit; font-size: 15px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: 13px; color: var(--text-muted); margin-top: 10px; }
.form-status { margin-top: 14px; font-size: 14px; font-weight: 600; padding: 10px 12px; border-radius: 10px; display: none; }
.form-status.ok { display: block; background: rgba(52,211,153,.12); color: var(--ok); border: 1px solid rgba(52,211,153,.4); }
.form-status.err { display: block; background: rgba(248,113,113,.12); color: var(--danger); border: 1px solid rgba(248,113,113,.4); }

/* ---- Footer nav (internal links for SEO) ---- */
.footer-nav { border-top: 1px solid var(--border); padding: 46px 0 26px; margin-top: 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 26px; }
.footer-grid h4 { font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--text-muted); margin: 0 0 12px; }
.footer-grid a { display: block; color: var(--text-muted); font-size: 14px; margin-bottom: 8px; }
.footer-grid a:hover { color: var(--primary-2); text-decoration: none; }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px; color: var(--text-muted); }

/* ---- Breadcrumb on subpages ---- */
.crumb { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
.crumb a { color: var(--text-muted); }
.solutions-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0; }
.solutions-nav a {
  font-size: 13px; border: 1px solid var(--border); padding: 6px 11px; border-radius: 999px;
  color: var(--text-muted); background: rgba(255,255,255,.02);
}
.solutions-nav a:hover, .solutions-nav a.active { color: var(--primary-ink); background: var(--primary); border-color: var(--primary); text-decoration: none; }

/* ---- Admin console ---- */
.admin-shell { padding: 30px 0 60px; }
.admin-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.admin-table th, .admin-table td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; vertical-align: top; }
.admin-table th { background: var(--surface-2); color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.admin-table tr:nth-child(even) td { background: rgba(255,255,255,.015); }
.status-pill { font-size: 12px; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.status-pending { background: rgba(251,191,36,.16); color: #fbbf24; }
.status-approved { background: rgba(52,211,153,.16); color: var(--ok); }
.status-rejected { background: rgba(248,113,113,.16); color: var(--danger); }
.token-bar { display: flex; gap: 10px; align-items: center; margin: 14px 0; flex-wrap: wrap; }
.admin-login { max-width: 420px; margin: 60px auto; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.mini { font-size: 12px; padding: 5px 9px; }

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .grid-3, .grid-4, .industry-grid, .deploy-grid, .dual { grid-template-columns: repeat(2, 1fr); }
  .feature-row, .contact-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px 22px; gap: 14px; }
  .nav-toggle { display: inline-block; }
  .grid-2, .grid-3, .grid-4, .industry-grid, .deploy-grid, .dual, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
}