/* Stripe-inspired CSS custom properties */
:root {
  --color-primary: #635BFF;
  --color-primary-hover: #533afd;
  --color-primary-light: #A99DFE;
  --color-surface: #F8FAFD;
  --color-white: #FFFFFF;
  --color-ink: #061B31;
  --color-carbon: #0A2540;
  --color-muted: #50617A;
  --color-border: #E5EDF5;
  --color-cyan: #00D4FF;
  --color-orange: #FF6118;
  --color-purple: #5E46BF;
  --color-pink: #FFE0EF;
  --color-success: #0E9F6E;
  --color-danger: #E02424;
  --gradient-signature: linear-gradient(120deg, #FF6118 0%, #FFE0EF 30%, #5E46BF 60%, #00D4FF 100%);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-pill: 9999px;
  --shadow-sm: 0 1px 2px rgba(10,37,64,0.08);
  --shadow-card: 0 6px 24px rgba(10,37,64,0.08), 0 1px 2px rgba(10,37,64,0.04);
  --shadow-lift: 0 20px 50px rgba(10,37,64,0.12);
  --duration-fast: 150ms;
  --duration-base: 200ms;
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-surface);
  color: var(--color-ink);
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Buttons */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--duration-fast), box-shadow var(--duration-fast), transform var(--duration-fast);
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(99,91,255,0.3);
  transform: translateY(-1px);
  color: #fff;
  text-decoration: none;
}

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-white);
  color: var(--color-carbon);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  text-decoration: none;
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  color: var(--color-carbon);
  text-decoration: none;
}

.btn-danger {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-danger);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity var(--duration-fast);
  text-decoration: none;
}
.btn-danger:hover { opacity: 0.88; color: #fff; text-decoration: none; }

/* Cards */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-card);
}

.card:hover { box-shadow: var(--shadow-lift); }

/* Badges */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
}
.badge-premium { background: #f0eeff; color: var(--color-primary); }
.badge-free    { background: #f0fff4; color: #0E9F6E; }
.badge-scanned { background: #e6f7ff; color: #0369a1; }
.badge-stub    { background: #f4f5f7; color: var(--color-muted); }
.badge-admin   { background: #fff3e0; color: #b45309; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Form controls */
.form-input {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-white);
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99,91,255,0.12);
}

/* Alert / flash */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #6ee7b7; }
.alert-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-info    { background: #eff6ff; color: #1d4ed8; border: 1px solid #93c5fd; }

/* Admin sidebar */
.admin-layout { display: flex; gap: 0; min-height: calc(100vh - 56px); }
.admin-sidebar {
  width: 200px;
  min-width: 200px;
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  padding: 24px 0;
}
.admin-sidebar a {
  display: block;
  padding: 8px 20px;
  font-size: 14px;
  color: var(--color-muted);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}
.admin-sidebar a:hover { color: var(--color-ink); text-decoration: none; }
.admin-sidebar a.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  background: rgba(99,91,255,0.04);
}
.admin-content { flex: 1; padding: 32px 40px; }

/* Stat card */
.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}
.stat-card .stat-label { font-size: 12px; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .stat-value { font-size: 28px; font-weight: 600; color: var(--color-carbon); margin-top: 4px; }

/* Table */
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { text-align: left; padding: 8px 12px; color: var(--color-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 1px solid var(--color-border); }
.data-table td { padding: 10px 12px; border-bottom: 1px solid #f1f5f9; color: var(--color-ink); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f9fbfd; }

/* Mono key display */
.api-key-display {
  font-family: var(--font-mono);
  font-size: 13px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 10px 14px;
  letter-spacing: 0.04em;
  color: var(--color-carbon);
}

/* Bar chart */
.bar-chart { display: flex; align-items: flex-end; gap: 4px; height: 120px; }
.bar-chart .bar {
  flex: 1;
  background: var(--color-primary);
  border-radius: 3px 3px 0 0;
  opacity: 0.8;
  min-height: 2px;
  transition: opacity var(--duration-fast);
}
.bar-chart .bar:hover { opacity: 1; }

/* Lock overlay for cards */
.card-locked { position: relative; overflow: hidden; }
.card-locked-overlay {
  position: absolute; inset: 0;
  background: rgba(248,250,253,0.7);
  backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-2xl);
}

/* Gradient accent bar */
.accent-bar {
  height: 4px;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

/* Pricing */
.pricing-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99,91,255,0.12), var(--shadow-card);
}
.pricing-card .price-amount { font-size: 42px; font-weight: 700; color: var(--color-carbon); }
.pricing-card .price-period { font-size: 16px; color: var(--color-muted); font-weight: 400; }
.pricing-feature { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--color-ink); padding: 6px 0; }
.pricing-feature .check { color: var(--color-success); font-weight: 700; }