:root {
  --bg: #0b1020;
  --bg-panel: #151b30;
  --accent: #ffb347;
  --accent-soft: #ffd9a0;
  --text-main: #f5f5f5;
  --text-muted: #b0b7d1;
  --danger: #ff6b6b;
  --success: #4cd964;
  --border-soft: #262c45;
  --shadow-soft: 0 18px 40px rgba(0,0,0,0.45);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --transition-fast: 0.18s ease-out;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-main);
  background: radial-gradient(circle at top, #1b2340 0, #050814 55%, #02030a 100%);
  color: var(--text-main);
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Top bar */

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(5, 8, 20, 0.96);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  background: conic-gradient(from 210deg, #ffb347, #ff6b6b, #4cd964, #4da3ff, #ffb347);
  box-shadow: 0 0 18px rgba(255,179,71,0.7);
}

.brand-text-main {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 15px;
  text-transform: uppercase;
}

.brand-text-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* Model navigation */

.model-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 760px;
  justify-content: center;
}

.model-btn {
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 6px 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(21,27,48,0.9);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.model-btn span.index {
  font-weight: 700;
  color: var(--accent-soft);
}

.model-btn:hover {
  background: #202744;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.35);
  border-color: rgba(255,255,255,0.18);
}

.model-btn.active {
  background: linear-gradient(135deg, #ffb347, #ff6b6b);
  color: #050814;
  border-color: transparent;
}

/* Language toggle */

.lang-toggle {
  display: inline-flex;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.12);
  overflow: hidden;
}

.lang-toggle button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 6px 12px;
  font-size: 11px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-toggle button.active {
  background: var(--accent);
  color: #050814;
}

/* Layout */

.main-content {
  padding: 24px 32px 40px;
  max-width: 1280px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
  gap: 22px;
}

@media (max-width: 960px) {
  .main-content {
    padding: 18px 16px 32px;
  }
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Panels */

.panel {
  background: radial-gradient(circle at top left, #1f2745 0, #101528 45%, #070a14 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 20px;
  position: relative;
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
}

.panel-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

/* Controls */

.control-group {
  margin-bottom: 14px;
}

.control-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 4px;
}

.control-label span.name {
  font-weight: 500;
}

.control-label span.value {
  color: var(--accent-soft);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
}

.inline-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 13px;
}

.inline-options label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

/* Result & charts */

.result-box {
  background: rgba(5,8,20,0.9);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 14px 14px 12px;
  margin-top: 8px;
}

.result-main {
  font-size: 22px;
  font-weight: 700;
}

.result-tagline {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.result-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.metric-pill {
  border-radius: var(--radius-pill);
  padding: 4px 10px;
  font-size: 11px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.metric-pill span.label {
  color: var(--text-muted);
  margin-right: 4px;
}

.metric-pill span.value {
  font-weight: 600;
}

.chart-area {
  margin-top: 14px;
  height: 220px;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at top, #222b4a 0, #0a0f20 55%, #050814 100%);
  border: 1px dashed rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 12px;
}

/* Story button & modal */

.story-btn,
.start-btn {
  border-radius: var(--radius-pill);
  border: none;
  padding: 7px 14px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
}

.story-btn {
  background: rgba(255,255,255,0.06);
  color: var(--text-main);
}

.story-btn:hover {
  background: rgba(255,255,255,0.12);
}

.start-btn {
  background: linear-gradient(135deg, #4da3ff, #4cd964);
  color: #050814;
}

.start-btn:hover {
  filter: brightness(1.05);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: #050814;
  border-radius: 18px;
  max-width: 780px;
  width: 92%;
  max-height: 80vh;
  overflow: auto;
  padding: 20px 22px 18px;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 60px rgba(0,0,0,0.7);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-body {
  font-size: 14px;
  color: var(--text-main);
}

.modal-body p {
  margin: 8px 0;
}

.modal-body .quote {
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  margin: 10px 0;
  color: var(--accent-soft);
  font-size: 13px;
}

/* Language visibility */

[data-lang="lv"] { display: none; }
[data-lang="en"] { display: none; }

body.lang-lv [data-lang="lv"],
body.lang-en [data-lang="en"] {
  display: inline;
}

body.lang-lv [data-lang-block="lv"],
body.lang-en [data-lang-block="en"] {
  display: block;
}

[data-lang-block] { display: none; }