/* ── Reset & base ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Ensure hidden attribute always wins over display rules */
[hidden] { display: none !important; }

:root {
  --bg: #070713;
  --bg2: #0d0d22;
  --card-bg: rgba(255,255,255,0.035);
  --card-border: rgba(255,255,255,0.07);
  --card-shadow: 0 24px 64px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04);

  --text: #f0f0ff;
  --text-muted: rgba(240,240,255,0.5);
  --text-subtle: rgba(240,240,255,0.28);

  --up: #FF4757;
  --up-glow: rgba(255,71,87,0.18);
  --down: #2ED573;
  --down-glow: rgba(46,213,115,0.15);
  --same: #8888aa;

  --radius: 28px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

html { height: 100%; }

body {
  font-family: var(--font);
  background: radial-gradient(ellipse at 50% 0%, #111130 0%, var(--bg) 70%);
  min-height: 100vh;
  min-height: 100dvh;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: env(safe-area-inset-top, 12px) env(safe-area-inset-right, 12px) env(safe-area-inset-bottom, 12px) env(safe-area-inset-left, 12px);
  -webkit-font-smoothing: antialiased;
}

/* ── States ───────────────────────────────────── */
.full-screen-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 100dvh;
}

.state-label {
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* Spinner */
.spinner {
  width: 36px;
  height: 36px;
  border: 2.5px solid rgba(255,255,255,0.1);
  border-top-color: rgba(255,255,255,0.6);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Error */
.error-icon {
  width: 52px;
  height: 52px;
  color: var(--text-muted);
}

.retry-btn {
  margin-top: 4px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  padding: 10px 28px;
  border-radius: 50px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.retry-btn:hover { background: rgba(255,255,255,0.13); border-color: rgba(255,255,255,0.2); }
.retry-btn:active { background: rgba(255,255,255,0.06); }

/* ── Layout ───────────────────────────────────── */
#content-state { width: 100%; animation: fadeUp 0.45s ease both; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.container {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 12px 0;
}

/* ── Header ───────────────────────────────────── */
header { padding: 4px 4px 0; }

.wordmark {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.fuel-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

/* ── Card ─────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 36px 28px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── Change block (hero) ──────────────────────── */
.change-block {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 10px;
}

.change-arrow {
  font-size: 2.8rem;
  line-height: 1;
  transition: color 0.3s;
}

.change-amount {
  font-size: clamp(3.6rem, 16vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  transition: color 0.3s;
}

.change-label {
  font-size: 1rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
  margin-bottom: 6px;
}

.tomorrow-date {
  font-size: 0.78rem;
  color: var(--text-subtle);
  letter-spacing: 0.03em;
  margin-bottom: 28px;
}

/* Color states */
.card.up   .change-arrow,
.card.up   .change-amount { color: var(--up); }
.card.up   { box-shadow: var(--card-shadow), 0 0 60px var(--up-glow); }

.card.down .change-arrow,
.card.down .change-amount { color: var(--down); }
.card.down { box-shadow: var(--card-shadow), 0 0 60px var(--down-glow); }

.card.same .change-arrow,
.card.same .change-amount { color: var(--same); }

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: rgba(255,255,255,0.07);
  margin-bottom: 24px;
}

/* ── Price row ────────────────────────────────── */
.price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
}

.price-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.price-day {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 4px;
}

.price-value {
  font-size: clamp(1.6rem, 8vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--text);
}

.price-unit {
  font-size: 0.72rem;
  color: var(--text-subtle);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

.price-date {
  font-size: 0.68rem;
  color: var(--text-subtle);
  margin-top: 4px;
}

.price-arrow-icon {
  width: 20px;
  height: 20px;
  color: var(--text-subtle);
  flex-shrink: 0;
}

/* ── Footer ───────────────────────────────────── */
footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-subtle);
  letter-spacing: 0.02em;
  padding-bottom: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}


.footer-dot { opacity: 0.4; }

/* ── Responsive tweaks ────────────────────────── */
@media (max-width: 360px) {
  .card { padding: 28px 20px 26px; }
}

@media (min-height: 700px) {
  body { padding: 24px 16px; }
}