/* ===== Clash Verge DataViz (c22) — Dashboard / Metrics Style ===== */
:root {
  --bg: #FFFFFF;
  --bg-card: #F8FAFC;
  --bg-hover: #F1F5F9;
  --border: #E2E8F0;
  --border-light: #CBD5E1;
  --blue: #3B82F6;
  --green: #10B981;
  --orange: #F59E0B;
  --red: #EF4444;
  --purple: #8B5CF6;
  --cyan: #06B6D4;
  --accent: #3B82F6;
  --text: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --font: -apple-system, 'Inter', 'SF Pro Display', 'PingFang SC', sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(15,23,42,0.08);
  --shadow-lg: 0 4px 12px rgba(15,23,42,0.12);
  --transition: all 0.2s ease;
  --gap: 14px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 14px;
  font-feature-settings: 'tnum';
  font-variant-numeric: tabular-nums;
}

/* Navbar */
.navbar {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background: rgba(255,255,255,0.95);
  -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.navbar .container {
  max-width:1200px; margin:0 auto; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between; height:52px;
}
.logo {
  display:flex; align-items:center; gap:8px;
  font-size:14px; font-weight:700; color:var(--text);
  text-decoration:none; white-space:nowrap; flex-shrink:0;
  font-family:var(--font-mono); letter-spacing:0.02em;
}
.logo-dot { width:8px; height:8px; border-radius:50%; background:var(--green); box-shadow:0 0 6px rgba(16,185,129,0.5); }
.navbar-nav {
  display:flex; align-items:center; gap:2px; flex-shrink:0;
  list-style:none; margin:0; padding:0;
}
.nav-link {
  padding:6px 14px; font-size:12px; font-weight:500;
  color:var(--text-secondary); text-decoration:none;
  transition:var(--transition); border-radius:var(--radius);
}
.nav-link:hover { color:var(--text); background:var(--bg-hover); }
.nav-link.active { color:var(--blue); background:rgba(59,130,246,0.1); font-weight:600; }
.nav-cta {
  background:var(--blue); color:#fff !important; font-weight:600;
  border-radius:var(--radius);
}
.nav-cta:hover { background:#2563EB !important; }
.mobile-menu-btn {
  display:none; width:36px; height:36px; align-items:center; justify-content:center;
  border:1px solid var(--border); background:none; cursor:pointer;
  border-radius:var(--radius); font-size:16px; color:var(--text-secondary);
}

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:48px 0; }

/* Hero — dashboard header */
.hero {
  padding:110px 0 50px;
  border-bottom:1px solid var(--border);
}
.hero .status-bar {
  display:flex; align-items:center; gap:8px; margin-bottom:14px;
  font-size:11px; color:var(--text-muted); font-family:var(--font-mono);
}
.hero .status-dot { width:6px; height:6px; border-radius:50%; background:var(--green); }
.hero h1 {
  font-size:32px; font-weight:700; letter-spacing:-0.02em; margin-bottom:8px;
  font-family:var(--font-mono);
}
.hero h1 .metric { color:var(--blue); }
.hero p {
  font-size:14px; color:var(--text-secondary); max-width:560px;
  margin-bottom:24px;
}
.hero-actions { display:flex; gap:10px; }

/* Page Header */
.page-header {
  padding:100px 0 40px; border-bottom:1px solid var(--border);
}
.page-header .breadcrumb {
  font-size:11px; color:var(--text-muted); font-family:var(--font-mono); margin-bottom:10px;
}
.page-header h1 { font-size:26px; font-weight:700; font-family:var(--font-mono); margin-bottom:6px; }
.page-header p { font-size:13px; color:var(--text-secondary); }

/* Buttons */
.btn {
  display:inline-flex; align-items:center; gap:6px;
  padding:10px 22px; border-radius:var(--radius);
  font-size:13px; font-weight:600; text-decoration:none;
  transition:var(--transition); cursor:pointer; border:none;
}
.btn-primary { background:var(--blue); color:#fff; }
.btn-primary:hover { background:#2563EB; transform:translateY(-1px); box-shadow:0 4px 12px rgba(59,130,246,0.3); }
.btn-secondary { background:var(--bg-card); color:var(--text-secondary); border:1px solid var(--border); }
.btn-secondary:hover { border-color:var(--text-muted); color:var(--text); }
.btn-sm { padding:7px 16px; font-size:11px; }

/* Metric Card */
.metric-card {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px;
  transition:var(--transition);
}
.metric-card:hover { border-color:var(--border-light); box-shadow:var(--shadow); }
.metric-card .m-label {
  font-size:10px; font-weight:600; color:var(--text-muted);
  text-transform:uppercase; letter-spacing:0.06em; margin-bottom:6px;
}
.metric-card .m-value {
  font-family:var(--font-mono); font-size:28px; font-weight:700;
  font-feature-settings:'tnum'; font-variant-numeric:tabular-nums;
  color:var(--text); line-height:1.1; margin-bottom:4px;
}
.metric-card .m-sub {
  font-size:11px; color:var(--text-muted); font-family:var(--font-mono);
}
.metric-card .m-trend {
  display:inline-flex; align-items:center; gap:4px;
  font-size:11px; font-weight:600; margin-top:4px; font-family:var(--font-mono);
}
.t-up { color:var(--green); }
.t-down { color:var(--red); }

/* Mini Bar Chart */
.bar-chart { display:flex; align-items:flex-end; gap:3px; height:40px; margin-top:10px; }
.bar-chart .bar {
  flex:1; border-radius:2px 2px 0 0; transition:height 0.6s ease;
  min-height:2px;
}
.bar.b-blue { background:var(--blue); }
.bar.b-green { background:var(--green); }
.bar.b-purple { background:var(--purple); }
.bar.b-orange { background:var(--orange); }
.bar.b-cyan { background:var(--cyan); }

/* Stats Row — metrics grid */
.metrics-row { display:grid; grid-template-columns:repeat(4,1fr); gap:var(--gap); margin-bottom:var(--gap); }
.metrics-3 { grid-template-columns:repeat(3,1fr); }

/* Feature Grid */
.feat-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gap); }
.feat-card { cursor:default; }
.feat-card .f-icon { font-size:20px; margin-bottom:8px; display:block; opacity:0.6; }
.feat-card h3 { font-size:13px; font-weight:700; font-family:var(--font-mono); margin-bottom:4px; }
.feat-card p { font-size:11px; color:var(--text-secondary); line-height:1.55; }
.feat-card .f-metric {
  font-family:var(--font-mono); font-size:22px; font-weight:700;
  color:var(--blue); margin-top:8px;
}

/* Platform Grid */
.plat-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:10px; }
.plat-card { padding:18px 12px; text-align:center; }
.plat-card .p-icon { font-size:24px; margin-bottom:6px; display:block; opacity:0.7; }
.plat-card h4 { font-size:12px; font-weight:700; font-family:var(--font-mono); }
.plat-card p { font-size:10px; color:var(--text-muted); }

/* Download */
.dl-channels { display:flex; gap:8px; margin-bottom:24px; flex-wrap:wrap; }
.ch-tab {
  padding:8px 18px; border-radius:var(--radius); font-size:11px; font-weight:600;
  cursor:pointer; border:1px solid var(--border); background:var(--bg-card);
  color:var(--text-secondary); transition:var(--transition); font-family:var(--font-mono);
}
.ch-tab:hover { border-color:var(--blue); color:var(--blue); }
.ch-tab.active { background:var(--blue); color:#fff; border-color:var(--blue); }
.dl-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:10px; }
.dl-card { padding:18px; cursor:pointer; }
.dl-card:hover { border-color:var(--blue); }
.dl-card-head { display:flex; align-items:center; gap:8px; margin-bottom:10px; }
.dl-card-icon { font-size:18px; opacity:0.7; }
.dl-card h4 { font-size:12px; font-weight:700; font-family:var(--font-mono); }
.dl-card .dl-m { font-size:10px; color:var(--text-muted); margin-bottom:10px; }
.dl-card .btn { width:100%; justify-content:center; }

/* Tables — dashboard table */
.dash-table {
  width:100%; border-collapse:collapse; font-size:12px;
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); overflow:hidden; margin-bottom:24px;
}
.dash-table th, .dash-table td { padding:10px 16px; text-align:left; }
.dash-table thead th {
  font-size:10px; font-weight:600; color:var(--text-muted);
  text-transform:uppercase; letter-spacing:0.06em;
  background:var(--bg); border-bottom:1px solid var(--border);
}
.dash-table tbody td { border-bottom:1px solid var(--border); color:var(--text-secondary); }
.dash-table tbody tr:last-child td { border-bottom:none; }
.dash-table tbody tr:hover td { background:var(--bg-hover); }
.d-tag {
  display:inline-block; padding:1px 6px; border-radius:4px; font-size:10px; font-weight:600;
  font-family:var(--font-mono); background:rgba(59,130,246,0.1); color:var(--blue);
}

/* Detail Cards */
.detail-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:var(--gap); }
.detail-card { padding:20px; }
.detail-card:hover { border-color:var(--blue); }
.detail-card .dc-head { display:flex; align-items:center; gap:8px; margin-bottom:8px; }
.detail-card .dc-icon { font-size:18px; opacity:0.6; }
.detail-card .dc-status {
  font-size:9px; padding:2px 8px; border-radius:4px; font-weight:600; font-family:var(--font-mono);
  background:rgba(16,185,129,0.1); color:var(--green);
}
.detail-card h3 { font-size:13px; font-weight:700; font-family:var(--font-mono); }
.detail-card p { font-size:11px; color:var(--text-secondary); line-height:1.6; margin-bottom:6px; }
.detail-card ul { list-style:none; padding:0; }
.detail-card ul li { padding:1px 0; font-size:11px; color:var(--text-muted); font-family:var(--font-mono); }
.detail-card ul li::before { content:'> '; color:var(--border-light); }

/* Compare */
.cmp-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:var(--gap); }
.cmp-card { padding:20px; }
.cmp-hl { border-color:var(--blue); background:rgba(59,130,246,0.04); }
.cmp-card h3 { font-size:14px; font-weight:700; font-family:var(--font-mono); margin-bottom:8px; }
.cmp-card ul { list-style:none; padding:0; }
.cmp-card ul li { padding:2px 0; font-size:11px; color:var(--text-secondary); }
.cmp-card ul li::before { content:'+ '; color:var(--green); }

/* Tutorial Cards */
.tut-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gap); }
.tut-card { padding:18px; cursor:pointer; }
.tut-card:hover { border-color:var(--blue); }
.tut-card .t-icon { font-size:24px; margin-bottom:8px; display:block; opacity:0.6; }
.tut-card h3 { font-size:12px; font-weight:700; font-family:var(--font-mono); margin-bottom:4px; }
.tut-card p { font-size:11px; color:var(--text-secondary); line-height:1.5; margin-bottom:6px; }
.tut-meta { display:flex; align-items:center; gap:6px; font-size:9px; color:var(--text-muted); font-family:var(--font-mono); }
.tut-tag { padding:2px 6px; border-radius:4px; font-weight:600; }
.t-easy { background:rgba(16,185,129,0.1); color:var(--green); }
.t-mid { background:rgba(245,158,11,0.1); color:var(--orange); }
.t-hard { background:rgba(239,68,68,0.1); color:var(--red); }

/* Tutorial Detail */
.tut-detail { margin-bottom:36px; }
.tut-detail h3 { font-size:16px; font-weight:700; font-family:var(--font-mono); margin-bottom:12px; padding-bottom:8px; border-bottom:1px solid var(--border); }
.dash-steps { list-style:none; padding:0; }
.dash-steps li {
  padding:10px 14px; margin-bottom:4px; background:var(--bg-card);
  border:1px solid var(--border); border-radius:var(--radius);
  font-size:12px; color:var(--text-secondary); font-family:var(--font-mono);
  transition:var(--transition);
}
.dash-steps li:hover { border-color:var(--blue); }
.dash-steps li::before { content:'$ '; color:var(--green); }
.code-block {
  background:var(--bg); border:1px solid var(--border);
  padding:14px 18px; border-radius:var(--radius); font-family:var(--font-mono);
  font-size:11px; line-height:1.8; color:var(--text-secondary); overflow-x:auto; margin:8px 0;
}
.code-block .c { color:var(--text-muted); }
.info-box {
  padding:10px 14px; border-left:3px solid var(--blue);
  background:rgba(59,130,246,0.04); font-size:11px; color:var(--text-secondary);
  border-radius:0 var(--radius) var(--radius) 0; margin:8px 0; font-family:var(--font-mono);
}

/* Progress Bar */
.progress-bar {
  height:4px; background:var(--border); border-radius:2px; overflow:hidden; margin-top:6px;
}
.progress-fill {
  height:100%; border-radius:2px; transition:width 0.8s ease;
}
.pf-blue { background:var(--blue); }
.pf-green { background:var(--green); }
.pf-purple { background:var(--purple); }
.pf-orange { background:var(--orange); }

/* About */
.about-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
.about-card { padding:18px; text-align:center; }
.about-card:hover { border-color:var(--blue); }
.about-card .a-icon { font-size:24px; margin-bottom:8px; display:block; opacity:0.6; }
.about-card h4 { font-size:11px; font-weight:700; font-family:var(--font-mono); }
.about-card p { font-size:10px; color:var(--text-muted); }

/* Friends */
.friends-wrap { padding:28px 0; }
.friends-wrap h3 { font-size:11px; font-weight:600; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:12px; text-align:center; font-family:var(--font-mono); }
.friends-list { display:flex; flex-wrap:wrap; gap:4px; justify-content:center; }
.friends-list a {
  padding:5px 12px; border-radius:var(--radius); font-size:10px; font-weight:500;
  color:var(--text-secondary); text-decoration:none; border:1px solid var(--border);
  transition:var(--transition); font-family:var(--font-mono);
}
.friends-list a:hover { border-color:var(--blue); color:var(--blue); background:rgba(59,130,246,0.04); }

/* Footer */
.footer {
  background:var(--bg); border-top:1px solid var(--border); padding:36px 0 16px;
}
.footer-inner { display:flex; justify-content:space-between; align-items:start; flex-wrap:wrap; gap:28px; margin-bottom:24px; }
.footer-brand p { font-size:10px; color:var(--text-muted); margin-top:4px; font-family:var(--font-mono); }
.footer-links h4 { font-size:10px; font-weight:600; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:8px; }
.footer-links ul { list-style:none; padding:0; }
.footer-links ul li { margin-bottom:4px; }
.footer-links ul li a { font-size:11px; color:var(--text-secondary); text-decoration:none; transition:var(--transition); font-family:var(--font-mono); }
.footer-links ul li a:hover { color:var(--blue); }
.footer-bottom { border-top:1px solid var(--border); padding-top:12px; text-align:center; font-size:9px; color:var(--text-muted); font-family:var(--font-mono); }

/* Modal */
.dl-modal-overlay {
  display:none; position:fixed; inset:0; z-index:9999;
  background:rgba(15,23,42,0.35);
  -webkit-backdrop-filter:blur(4px); backdrop-filter:blur(4px);
  align-items:center; justify-content:center;
}
.dl-modal-overlay.active { display:flex; }
.dl-modal {
  background:var(--bg-card); border:1px solid var(--border-light);
  border-radius:var(--radius-lg); box-shadow:var(--shadow-lg);
  padding:28px; max-width:380px; width:90%; text-align:center;
  animation:modalIn 0.2s ease;
}
@keyframes modalIn { from{opacity:0;transform:scale(0.95) translateY(12px)} to{opacity:1;transform:scale(1) translateY(0)} }
.dl-modal-icon { font-size:32px; margin-bottom:10px; opacity:0.6; }
.dl-modal h3 { font-size:16px; font-weight:700; font-family:var(--font-mono); margin-bottom:4px; }
.dl-modal p { font-size:12px; color:var(--text-secondary); margin-bottom:6px; }
.dl-modal .dl-filename {
  display:inline-block; padding:4px 12px; border-radius:var(--radius);
  border:1px solid var(--border); font-size:11px; font-family:var(--font-mono); color:var(--blue); margin-bottom:14px;
}
.dl-modal-actions { display:flex; gap:8px; justify-content:center; }

/* Reveal */
.reveal { opacity:0; transform:translateY(8px); transition:opacity 0.4s ease,transform 0.4s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }

@media (max-width:1024px) {
  .feat-grid,.metrics-row{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:1fr} .tut-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px) {
  .mobile-menu-btn{display:flex}
  .navbar-nav{position:fixed;top:52px;left:0;right:0;background:var(--bg);flex-direction:column;padding:8px;transform:translateY(-120%);opacity:0;pointer-events:none;transition:all 0.2s ease;border-bottom:1px solid var(--border)}
  .navbar-nav.active,.navbar-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .navbar-nav .nav-link{width:100%;padding:9px 14px}
  .hero h1{font-size:22px}
  .feat-grid,.metrics-row{grid-template-columns:1fr}
  .plat-grid{grid-template-columns:repeat(2,1fr)}
  .tut-grid,.about-grid{grid-template-columns:1fr}
  .cmp-grid{grid-template-columns:1fr}
  .footer-inner{flex-direction:column}
}