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

:root {
  --bg: #ffffff;
  --bg-subtle: #f7f7f8;
  --surface: #ffffff;
  --surface-hover: #f9f9f9;
  --border: #e8e8eb;
  --border-focus: #dc2626;
  --text: #1a1a1a;
  --text-muted: #888893;
  --accent: #dc2626;
  --accent-hover: #b91c1c;
  --accent-dim: rgba(220,38,38,0.06);
  --accent-border: rgba(220,38,38,0.18);
  --accent-glow: rgba(220,38,38,0.1);
  --success: #16a34a;
  --success-bg: rgba(22,163,74,0.06);
  --success-border: rgba(22,163,74,0.18);
  --danger: #dc2626;
  --danger-bg: rgba(220,38,38,0.06);
  --danger-border: rgba(220,38,38,0.18);
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
  background: var(--bg-subtle);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.mascot-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.mascot {
  width: 180px;
  height: 180px;
  object-fit: contain;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 4px;
}
.brand-row .mascot-inline {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.brand-text {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 2px; color: var(--accent);
}

h1 {
  font-size: 22px; font-weight: 700; letter-spacing: -0.3px;
  color: var(--text);
}
.subtitle { font-size: 14px; color: var(--text-muted); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.field-label {
  font-size: 13px; font-weight: 600; color: var(--text);
  margin-bottom: 6px; display: flex; align-items: center; gap: 6px;
}
.field-label i { width: 14px; height: 14px; color: var(--text-muted); }

.field-input {
  width: 100%; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: 8px;
  font-size: 14px; color: var(--text);
  background: var(--bg-subtle); outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: #fff;
}
.field-input::placeholder { color: #b0b0b8; }
.field-input-mono {
  font-family: 'SF Mono', 'JetBrains Mono', 'Cascadia Code', monospace;
  text-align: center; letter-spacing: 3px; font-size: 15px;
}
.field-input-mono::placeholder { letter-spacing: 0; font-family: inherit; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border: none; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  line-height: 1;
}
.btn:active { transform: scale(0.98); }
.btn i { width: 16px; height: 16px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 8px rgba(220,38,38,0.2);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-full { width: 100%; }

.btn-sm {
  padding: 6px 12px; font-size: 12px; font-weight: 600;
  border-radius: 6px; gap: 5px;
}
.btn-sm i { width: 13px; height: 13px; }

.btn-outline-red {
  background: var(--accent-dim); color: var(--accent);
  border: 1px solid var(--accent-border);
}
.btn-outline-red:hover:not(:disabled) { background: rgba(220,38,38,0.1); }

.btn-outline-muted {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-outline-muted:hover:not(:disabled) { background: var(--bg-subtle); color: var(--danger); border-color: var(--accent-border); }

.result-card {
  padding: 20px; border-radius: var(--radius); text-align: center;
}
.result-card-success {
  background: var(--success-bg); border: 1px solid var(--success-border);
}
.result-card .label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1.5px; margin-bottom: 6px;
}
.result-card-success .label { color: var(--success); }
.result-card .code {
  font-size: 36px; font-weight: 800; color: var(--text);
  font-family: 'SF Mono', 'JetBrains Mono', monospace;
  letter-spacing: 8px;
}
.result-card .timer {
  font-size: 12px; color: var(--text-muted); margin-top: 8px;
  display: flex; align-items: center; justify-content: center; gap: 4px;
}
.result-card .timer i { width: 13px; height: 13px; }

.result-card-error {
  background: var(--danger-bg); border: 1px solid var(--danger-border);
}
.result-card-error .label { color: var(--danger); }
.result-card-error .message { font-size: 14px; color: var(--danger); font-weight: 500; }

.progress-bar {
  width: 100%; height: 3px; background: var(--border);
  border-radius: 2px; margin-top: 12px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 2px; transition: width 1s linear;
}
.progress-bar-red { background: var(--accent); }

.dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-green { background: var(--success); }
.dot-red { background: var(--danger); }
.dot-gray { background: #ccc; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: 4px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
}
.badge-active { background: var(--success-bg); color: var(--success); }
.badge-used { background: var(--danger-bg); color: var(--danger); }
.badge-expired { background: var(--bg-subtle); color: #bbb; }

.token-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px; border-radius: 6px;
  font-size: 12px; font-family: 'SF Mono', monospace; font-weight: 600;
  border: 1px solid var(--border); background: var(--bg-subtle);
  cursor: pointer; transition: all 0.15s;
  user-select: all; color: var(--text);
}
.token-chip:hover { border-color: var(--accent-border); background: var(--accent-dim); }

.toast {
  position: fixed; top: 20px; right: 20px; z-index: 1000;
  padding: 12px 18px; border-radius: 8px;
  font-size: 13px; font-weight: 500;
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform 0.3s ease;
}
.toast.show { transform: translateX(0); }
.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }

.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

.footer-text {
  margin-top: 24px; text-align: center;
  font-size: 11px; color: #ccc;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.footer-text i { width: 12px; height: 12px; }

@media (max-width: 640px) {
  h1 { font-size: 20px; }
  .result-card .code { font-size: 28px; letter-spacing: 4px; }
  .mascot { width: 140px; height: 140px; }
  .brand-row .mascot-inline { width: 32px; height: 32px; }
}