:root {
  --bg: #080e1c;
  --surface: #0d1526;
  --surface-2: #162035;
  --accent: #2563eb;
  --accent-light: #60a5fa;
  --accent-glow: rgba(37, 99, 235, 0.4);
  --text: #e2e8f0;
  --text-muted: #4b6180;
  --border: rgba(255, 255, 255, 0.07);
  --radius: 12px;
  --radius-lg: 20px;
}

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

html { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  background-image: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.1) 0%, transparent 55%);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  max-width: 600px;
  margin: 0 auto;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

/* ── Header ─────────────────────────────────────────── */

.app-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.logo {
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 8px;
}

.install-btn {
  grid-column: 3;
  justify-self: end;
}

.logo-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-light);
  filter: drop-shadow(0 0 5px var(--accent-glow));
}

.logo-text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--accent-light) 0%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.install-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.install-btn:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
}

.install-btn svg {
  width: 15px;
  height: 15px;
}

/* ── Result Section (main element) ──────────────────── */

.result-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px 16px;
  gap: 10px;
  min-height: 0;
}

.result-number {
  font-size: clamp(80px, 22vw, 160px);
  font-weight: 900;
  line-height: 1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -4px;
  transition: color 0.15s;
}

.result-number.idle {
  color: var(--text-muted);
  opacity: 0.25;
  letter-spacing: -2px;
}

.result-number.shuffling {
  animation: numShake 0.07s infinite;
  color: var(--accent-light);
}

.result-number.reveal {
  animation: numPop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes numShake {
  0%, 100% { transform: translateX(0); }
  33%       { transform: translateX(-3px); }
  66%       { transform: translateX(3px); }
}

@keyframes numPop {
  0%   { transform: scale(0.8);  opacity: 0.5; }
  100% { transform: scale(1);    opacity: 1; }
}

.result-context {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.2px;
  min-height: 22px;
}

/* ── Controls ─────────────────────────────────────────── */

.controls {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
}

/* ── Odds Pills ──────────────────────────────────────── */

.odds-selector {
  padding: 16px 20px 12px;
}

.odds-pills {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.odds-pills::-webkit-scrollbar { display: none; }

.odds-pill[data-odds="custom"] {
  grid-column: 1 / -1;
  justify-self: center;
  padding: 8px 24px;
}

.odds-pill {
  flex-shrink: 0;
  padding: 8px 16px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s, box-shadow 0.15s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.odds-pill:hover {
  border-color: var(--accent-light);
  color: var(--text);
}

.odds-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 16px var(--accent-glow);
}

/* ── Custom Panel ────────────────────────────────────── */

.custom-panel {
  padding: 4px 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.custom-panel label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
}

.custom-panel label em {
  font-style: normal;
  color: var(--accent-light);
}

.custom-input-row {
  display: flex;
  gap: 8px;
  width: 100%;
  max-width: 320px;
}

.custom-input-row input {
  flex: 1;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
}

.custom-input-row input:focus {
  border-color: var(--accent-light);
}

.custom-input-row input.error {
  border-color: #ef4444;
  animation: errorShake 0.3s ease;
}

@keyframes errorShake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-6px); }
  75%       { transform: translateX(6px); }
}

.btn-secondary {
  padding: 10px 18px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.btn-secondary:hover { background: var(--accent-light); }

/* ── Roll Button ─────────────────────────────────────── */

.roll-row {
  padding: 4px 20px 18px;
  display: flex;
  justify-content: center;
}

.roll-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 56px;
  background: linear-gradient(135deg, var(--accent) 0%, #1e40af 100%);
  border: none;
  border-radius: 100px;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 3px;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.15s ease;
  box-shadow: 0 4px 20px var(--accent-glow);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.roll-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.roll-btn:active:not(:disabled) { transform: scale(0.95); }
.roll-btn:disabled { cursor: not-allowed; opacity: 0.7; }

.roll-btn.rolling {
  animation: btnPulse 0.2s ease-in-out infinite alternate;
}

@keyframes btnPulse {
  from { box-shadow: 0 4px 20px var(--accent-glow); }
  to   { box-shadow: 0 4px 44px rgba(37, 99, 235, 0.75); }
}

.roll-btn-icon {
  width: 18px;
  height: 18px;
}

.roll-btn.rolling .roll-btn-icon {
  animation: iconSpin 0.4s linear infinite;
}

@keyframes iconSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ── Stats Row ───────────────────────────────────────── */

.stats-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
}

.stat-count {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

.reset-btn {
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.reset-btn:hover {
  border-color: rgba(239, 68, 68, 0.5);
  color: #f87171;
}

/* ── History ─────────────────────────────────────────── */

.history-section {
  border-top: 1px solid var(--border);
}

.history-toggle {
  width: 100%;
  padding: 13px 20px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s;
}

.history-toggle:hover { color: var(--text); }

.history-badge {
  background: var(--surface-2);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
}

.chevron {
  width: 16px;
  height: 16px;
  margin-left: auto;
  transition: transform 0.2s ease;
}

.history-section.open .chevron { transform: rotate(180deg); }

.history-list {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px 20px 20px;
}

.history-section.open .history-list { display: flex; }

.history-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  animation: slideIn 0.15s ease-out;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.history-item-number {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.history-item-odds {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Utilities ───────────────────────────────────────── */

.hidden { display: none !important; }

/* ── Desktop ─────────────────────────────────────────── */

@media (min-width: 600px) {
  .result-section {
    padding: 48px 40px 24px;
  }

  .odds-selector {
    padding: 18px 28px 14px;
  }

  .roll-row {
    padding: 4px 28px 20px;
  }

  .roll-btn {
    padding: 18px 72px;
    font-size: 20px;
  }

  .controls {
    padding: 0 8px;
  }
}

@media (max-width: 599px) {
  .odds-pills {
    gap: 6px;
  }

  .odds-pill {
    padding: 8px 4px;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}