:root {
  --bg: #071723;
  --card: rgba(16, 34, 48, 0.8);
  --border: rgba(155, 178, 201, 0.22);
  --text: #ecf1f7;
  --muted: #a8b7c8;
  --tab: #102737;
  --tab-active: #15435d;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  color: var(--text);
  background: radial-gradient(circle at 12% 12%, #0f3a4f, transparent 32%), radial-gradient(circle at 84% 6%, #41210d, transparent 30%), var(--bg);
  font-family: "IBM Plex Sans", sans-serif;
  overflow: hidden;
}

h1,
h2,
h3,
.eyebrow {
  font-family: "Space Grotesk", sans-serif;
}

.bg-glow {
  position: fixed;
  border-radius: 999px;
  filter: blur(90px);
  opacity: 0.22;
  pointer-events: none;
}

.bg-glow-a {
  width: 360px;
  height: 360px;
  left: -120px;
  top: 22%;
  background: #0ea5e9;
}

.bg-glow-b {
  width: 390px;
  height: 390px;
  right: -150px;
  top: 54%;
  background: #f97316;
}

.webapp {
  height: 100vh;
  max-width: 1340px;
  margin: 0 auto;
  padding: 14px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(6px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 16px;
  align-items: flex-end;
}

.topbar h1 {
  margin: 4px 0;
  font-size: clamp(1.2rem, 2.2vw, 1.8rem);
}

.eyebrow {
  margin: 0;
  color: #8ee7df;
  font-weight: 600;
  letter-spacing: 0.07em;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 680px;
  font-size: 0.9rem;
}

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

label {
  display: grid;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--muted);
}

select,
input[type="range"] {
  background: #0f2b3d;
  color: var(--text);
  border: 1px solid rgba(142, 167, 194, 0.35);
  border-radius: 8px;
  padding: 8px;
}

#yearValue {
  font-weight: 700;
  color: #8ee7df;
}

.workbook {
  min-height: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
}

.sheet-panels {
  min-height: 0;
  padding: 12px;
}

.workbook-sheet {
  display: none;
  height: 100%;
  overflow: auto;
  gap: 12px;
}

.workbook-sheet.active {
  display: grid;
}

.kpis {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.kpi-card {
  padding: 12px;
}

.kpi-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.77rem;
}

.kpi-card h3 {
  margin: 5px 0 0;
  font-size: 1.36rem;
}

.kpi-card span {
  color: #8ee7df;
  font-size: 0.75rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.chart-card {
  padding: 12px;
  min-height: 320px;
}

.card-head h2 {
  margin: 0;
  font-size: 0.98rem;
}

.card-head p {
  margin: 5px 0 10px;
  font-size: 0.8rem;
  color: var(--muted);
}

.chart-card canvas {
  width: 100% !important;
  height: 270px !important;
}

.channel-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.channel-card {
  padding: 12px;
}

.channel-card p {
  margin: 0;
  font-size: 0.75rem;
  color: var(--muted);
}

.channel-card h3 {
  margin: 6px 0 0;
  font-size: 1.2rem;
}

.table-wrap {
  padding: 12px;
}

.table-container {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 840px;
}

th,
td {
  border-bottom: 1px solid rgba(173, 191, 210, 0.18);
  text-align: left;
  padding: 9px;
  font-size: 0.86rem;
}

th {
  color: #8ee7df;
  font-weight: 600;
}

.method-card {
  padding: 16px;
  align-content: start;
}

.method-card h2 {
  margin: 0 0 8px;
}

.method-card p {
  margin: 0 0 10px;
  color: var(--muted);
}

.method-card ul {
  margin: 0;
  padding-left: 18px;
  color: #d7e0eb;
  display: grid;
  gap: 8px;
}

.map-card {
  padding: 12px;
}

.map-canvas {
  width: 100%;
  height: 540px;
  border: 1px solid rgba(173, 191, 210, 0.15);
  border-radius: 12px;
  background: rgba(6, 22, 32, 0.65);
}

.sheet-tabs {
  border-top: 1px solid rgba(173, 191, 210, 0.16);
  display: flex;
  gap: 8px;
  padding: 8px;
  overflow-x: auto;
}

.sheet-tab {
  border: 1px solid rgba(142, 167, 194, 0.3);
  background: var(--tab);
  color: #d9e3ee;
  border-radius: 10px;
  padding: 8px 14px;
  font: 600 0.82rem "Space Grotesk", sans-serif;
  cursor: pointer;
  white-space: nowrap;
}

.sheet-tab.active {
  background: var(--tab-active);
  border-color: rgba(126, 214, 255, 0.5);
  color: #a8ecff;
}

@media (max-width: 1060px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .kpis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .channel-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .webapp {
    padding: 10px;
  }

  .map-canvas {
    height: 420px;
  }
}