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

:root {
  --bg:      #09090f;
  --surface: #111118;
  --border:  #1e1e2e;
  --accent:  #ff6b35;
  --text:    #e8e8f0;
  --muted:   #888;
  --radius:  12px;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mono   { font-family: 'JetBrains Mono', monospace; }
.accent { color: var(--accent); }
.muted  { color: var(--muted); }

/* ─── Nav ─── */
nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
}
.nav-home { color: var(--muted); transition: color .2s; text-decoration: none; }
.nav-home:hover { color: var(--text); }
.nav-sep { color: var(--muted); }
.nav-cur { font-weight: 600; }

/* ─── Main ─── */
main {
  flex: 1;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 24px 60px;
  width: 100%;
}

.hero { text-align: center; padding: 40px 0 36px; }
.hero h1 {
  font-size: clamp(48px, 10vw, 80px);
  font-weight: 800;
  letter-spacing: -3px;
  line-height: 1;
  margin-bottom: 10px;
}
.hero-sub { color: var(--muted); font-size: 15px; }

/* ─── Card ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.input-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.label { font-size: 12px; color: var(--muted); letter-spacing: .08em; }
.input-actions { display: flex; gap: 8px; }

.btn-sm {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all .2s;
}
.btn-sm:hover { border-color: var(--text); color: var(--text); }
.accent-btn { border-color: var(--accent) !important; color: var(--accent) !important; }
.accent-btn:hover { background: rgba(255,107,53,.1) !important; }

/* ─── Option List ─── */
.option-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
.option-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color .2s;
}
.option-item:hover { border-color: rgba(255,107,53,.3); }
.option-num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); width: 20px; flex-shrink: 0; }
.option-text { flex: 1; font-size: 14px; }
.option-del { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 16px; padding: 0 2px; transition: color .2s; line-height: 1; }
.option-del:hover { color: #ff6b6b; }

.quick-input {
  width: 100%;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color .2s;
}
.quick-input:focus { border-color: var(--accent); border-style: solid; }
.quick-input::placeholder { color: var(--muted); }

/* ─── Presets ─── */
.presets {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.preset-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.preset-tag {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 100px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all .2s;
}
.preset-tag:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Pick Area ─── */
.pick-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 20px 0 32px;
}

.slot-wrapper {
  width: 100%;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 16px;
  padding: 4px;
  transition: border-color .3s;
}
.slot-wrapper.spinning { border-color: var(--accent); box-shadow: 0 0 40px rgba(255,107,53,.2); }
.slot-wrapper.result   { border-color: var(--accent); box-shadow: 0 0 60px rgba(255,107,53,.3); }

.slot-display {
  background: var(--bg);
  border-radius: 12px;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
#slotText {
  font-size: clamp(24px, 6vw, 40px);
  font-weight: 700;
  letter-spacing: -1px;
  text-align: center;
  padding: 0 20px;
  transition: color .3s;
}
.slot-wrapper.result #slotText { color: var(--accent); }

.spin-btn {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 100px;
  padding: 16px 48px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all .2s;
  letter-spacing: -.3px;
}
.spin-btn:hover { transform: scale(1.04); box-shadow: 0 8px 32px rgba(255,107,53,.4); }
.spin-btn:active { transform: scale(.97); }
.spin-btn:disabled { opacity: .6; cursor: default; transform: none; }

/* ─── History ─── */
.history-list { display: flex; flex-direction: column; gap: 6px; }
.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg);
  border-radius: 8px;
  font-size: 13px;
}
.history-result { font-weight: 600; color: var(--accent); }
.history-time   { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); }

/* ─── Share ─── */
.share-area { display: flex; align-items: center; gap: 12px; justify-content: center; margin-top: -8px; flex-wrap: wrap; }
.share-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 100px;
  font-size: 13px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all .2s;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); }
.share-hint { font-size: 12px; color: var(--accent); }

/* ─── Confetti ─── */
.confetti-wrap { position: fixed; inset: 0; pointer-events: none; z-index: 999; overflow: hidden; }
.confetti-piece {
  position: absolute;
  width: 10px; height: 10px;
  border-radius: 2px;
  animation: confettiFall linear forwards;
}
@keyframes confettiFall {
  0%   { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* ─── Footer ─── */
footer { padding: 24px 28px; text-align: center; border-top: 1px solid var(--border); font-size: 12px; }
footer a:hover { color: var(--accent); }

@media (max-width: 480px) {
  .presets { flex-direction: column; align-items: flex-start; }
}