:root {
  --bg: #0a0f1e;
  --surface: #111827;
  --surface2: #1a2236;
  --border: #1f2d45;
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --blue: #3b82f6;
  --green: #22c55e;
  --meta: #1877f2;
  --ga4: #f97316;
  --gtm: #4ade80;
  --purple: #a78bfa;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────── */
header {
  background: linear-gradient(135deg, #0d1b33 0%, #0a0f1e 100%);
  border-bottom: 1px solid var(--border);
  padding: 18px 32px 12px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.header-title { display: flex; align-items: center; gap: 16px; }
.header-logo-img { height: 32px; width: auto; }
.header-title-sep { width: 1px; height: 28px; background: var(--border); }
.header-subtitle { font-size: 11px; color: var(--muted); letter-spacing: 0.3px; }
.header-updated { font-size: 11px; color: var(--muted); margin-top: 8px; text-align: right; }

.header-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.date-range { display: flex; align-items: center; gap: 6px; }
.date-range input[type="date"] {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  color-scheme: dark;
}
.date-sep { color: var(--muted); font-size: 13px; }
.btn-apply {
  background: var(--gold);
  color: #0a0f1e;
  border: none;
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-apply:hover { opacity: 0.85; }

.btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.15s;
}
.btn-logout:hover { border-color: #ef4444; color: #fca5a5; }

.period-selector { display: flex; gap: 4px; background: var(--surface2); padding: 4px; border-radius: 8px; border: 1px solid var(--border); }
.period-btn { background: none; border: none; color: var(--muted); padding: 5px 12px; border-radius: 6px; cursor: pointer; font-size: 12px; font-weight: 500; transition: all 0.15s; }
.period-btn:hover { color: var(--text); }
.period-btn.active { background: var(--gold); color: #0a0f1e; font-weight: 700; }

/* ── Main layout ─────────────────────────────── */
main { max-width: 1200px; margin: 0 auto; padding: 32px 24px; display: flex; flex-direction: column; gap: 40px; }

/* ── Section ─────────────────────────────────── */
.section-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.section-header h2 { font-size: 17px; font-weight: 600; }

.section-badge {
  font-size: 10px; font-weight: 700; letter-spacing: 0.8px;
  text-transform: uppercase; padding: 3px 8px; border-radius: 4px;
}
.section-badge.meta  { background: rgba(24,119,242,0.15); color: var(--meta); border: 1px solid rgba(24,119,242,0.3); }
.section-badge.ga4   { background: rgba(249,115,22,0.15); color: var(--ga4); border: 1px solid rgba(249,115,22,0.3); }
.section-badge.gtm   { background: rgba(74,222,128,0.12); color: var(--gtm); border: 1px solid rgba(74,222,128,0.25); }
.section-badge.attr  { background: rgba(167,139,250,0.15); color: var(--purple); border: 1px solid rgba(167,139,250,0.3); }
.section-badge.ads   { background: rgba(201,168,76,0.15); color: var(--gold); border: 1px solid rgba(201,168,76,0.3); }

/* ── Campaign blocks ─────────────────────────── */
.campaign-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}
.campaign-block:last-child { margin-bottom: 0; }

.campaign-card {
  padding: 24px;
  border-right: 1px solid var(--border);
}

.campaign-type { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.campaign-name { font-size: 15px; font-weight: 600; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--border); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.card-metric { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; font-size: 13px; border-bottom: 1px solid var(--border); }
.card-metric:last-child { border-bottom: none; }
.card-metric-label { color: var(--muted); }
.card-metric-value { font-weight: 600; }
.card-metric-value.highlight { color: var(--gold); font-size: 15px; }
.card-metric-value.gold { color: var(--gold); }
.card-metric-value.green { color: var(--green); }

/* ── Funnel ──────────────────────────────────── */
.funnel { padding: 24px; }
.funnel-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.6px; color: var(--muted); margin-bottom: 18px; }

.funnel-step { margin-bottom: 4px; }
.funnel-step-info { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
.funnel-step-label { font-size: 12px; color: var(--muted); }
.funnel-step-value { font-size: 14px; font-weight: 600; }
.funnel-step-value.cost { color: var(--gold); }
.funnel-step-value.muted { color: var(--muted); font-style: italic; font-size: 12px; }

.funnel-bar { height: 8px; background: var(--surface2); border-radius: 4px; overflow: hidden; }
.funnel-bar-fill { height: 100%; background: linear-gradient(90deg, var(--gold), var(--gold-light)); border-radius: 4px; transition: width 0.6s ease; }

.funnel-pct { font-size: 11px; color: var(--muted); margin-left: 8px; font-weight: 400; }
.funnel-connector { text-align: left; padding-left: 4px; font-size: 11px; color: var(--border); margin: 5px 0; }

/* ── Attribution funnel ──────────────────────── */
.attr-funnel {
  display: flex;
  align-items: stretch;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 24px;
  gap: 0;
}
.attr-step { display: flex; align-items: center; flex: 1; min-width: 130px; }
.attr-step-box {
  flex: 1;
  border: 1px solid;
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
}
.attr-step-value { font-size: 26px; font-weight: 700; line-height: 1.1; }
.attr-step-label { font-size: 11px; color: var(--muted); margin-top: 6px; line-height: 1.4; }
.attr-step-sub { font-size: 10px; color: var(--muted); margin-top: 4px; }
.attr-arrow { font-size: 18px; color: var(--border); padding: 0 6px; flex-shrink: 0; }

.section-subtitle { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 12px; }

/* ── Ads grid ────────────────────────────────── */
.ads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.ad-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: border-color 0.2s;
}
.ad-card:hover { border-color: var(--gold); }
.ad-badge {
  position: absolute; top: 8px; left: 8px; z-index: 1;
  background: var(--gold); color: #0a0f1e;
  font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 4px;
}
.ad-thumb { width: 100%; aspect-ratio: 1/1; background: var(--surface2); overflow: hidden; }
.ad-thumb img { width: 100%; height: 100%; object-fit: cover; }
.ad-thumb-placeholder {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  font-size: 40px; font-weight: 800; color: var(--border); letter-spacing: -2px;
}
.ad-info { padding: 14px; }
.ad-name { font-size: 13px; font-weight: 600; margin-bottom: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ad-campaign-tag { display: inline-block; font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 4px; margin-bottom: 10px; background: rgba(201,168,76,0.15); color: var(--gold); border: 1px solid rgba(201,168,76,0.3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.ad-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.ad-metric-val { font-size: 16px; font-weight: 700; display: block; }
.ad-metric-lbl { font-size: 10px; color: var(--muted); }
.ad-spend { font-size: 12px; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; }

/* ── GA4 cards ───────────────────────────────── */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-bottom: 20px; }
.cards-3 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.card:hover { border-color: var(--gold); transition: border-color 0.2s; }
.card-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 10px; }
.stat-big { font-size: 36px; font-weight: 700; color: var(--gold); }

/* ── Chart ───────────────────────────────────── */
.chart-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; position: relative; }

/* ── Pages table ─────────────────────────────── */
.pages-table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.pages-table { width: 100%; border-collapse: collapse; }
.pages-table th { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); text-align: left; background: var(--surface2); }
.pages-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
.pages-table tr:last-child td { border-bottom: none; }
.pages-table tr:hover td { background: var(--surface2); }
.page-title { font-size: 13px; font-weight: 500; }
.page-bar-wrap { height: 3px; background: var(--border); border-radius: 2px; margin-top: 5px; max-width: 200px; }
.page-bar { height: 100%; background: var(--gold); border-radius: 2px; }
.page-path { font-family: 'Menlo', monospace; font-size: 11px; color: var(--muted); }
.channel-tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 20px; background: var(--surface2); border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.channel-tag--utm { background: rgba(212,175,55,0.12); border-color: rgba(212,175,55,0.35); color: var(--gold); }
.page-campaign { font-size: 10px; color: var(--muted); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px; }
.num { text-align: right; font-weight: 600; }

/* ── Events ──────────────────────────────────── */
.events-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.event-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; transition: border-color 0.2s; }
.event-card:hover { border-color: var(--gold); }
.event-card.featured { border-color: rgba(201,168,76,0.4); }
.event-name { font-family: 'Menlo', monospace; font-size: 12px; color: var(--muted); }
.event-name.featured-name { color: var(--gold-light); }
.event-count { font-size: 22px; font-weight: 700; }

/* ── UTM table ───────────────────────────────── */
.medium-tag { background: var(--surface2); padding: 2px 6px; border-radius: 4px; font-size: 11px; color: var(--muted); }

/* ── Skeleton ────────────────────────────────── */
.skeleton, .card.skeleton, .skeleton-block {
  background: linear-gradient(90deg, var(--surface) 25%, var(--surface2) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius);
  border: none;
}
.skeleton-block { height: 220px; margin-bottom: 16px; }
.card.skeleton { min-height: 100px; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Misc ────────────────────────────────────── */
.error-msg {
  background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3);
  color: #fca5a5; padding: 16px 20px; border-radius: var(--radius); font-size: 13px;
}

@media (max-width: 720px) {
  header { padding: 14px 16px 10px; }
  main { padding: 20px 14px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .campaign-block { grid-template-columns: 1fr; }
  .campaign-card { border-right: none; border-bottom: 1px solid var(--border); }
  .attr-funnel { flex-direction: column; }
  .attr-arrow { transform: rotate(90deg); padding: 6px 0; text-align: center; }
}