:root {
  /* Default (Dark) Theme */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --surface: #1e293b;
  --surface-muted: #334155;
  
  --accent-blue: #60a5fa;
  --accent-gold: #fbbf24;
  --accent-amber: #fbbf24;
  --accent-forest: #34d399;
  --accent-maroon: #f87171;
  --accent-green: #34d399;
  --accent-red: #f87171;
  --accent-purple: #a78bfa;
  
  --color-primary: #60a5fa;
  --color-accent: #fbbf24;
  --color-success: #34d399;
  --color-info: #38bdf8;
  --color-warning: #fbbf24;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  
  --border-color: #334155;
  --border-strong: #475569;
  
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.4);
  --glow-strong: 0 30px 50px rgba(96, 165, 250, 0.15);
  
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 20px;
  
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 48px;
  
  --container-max: 560px;
  --container-wide: 1260px;
  
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-primary: #fbf4ea;
  --bg-secondary: #ffffff;
  --bg-card: #fffdf9;
  --surface: #ffffff;
  --surface-muted: #f5efe5;
  
  --accent-blue: #1d4c81;
  --accent-gold: #c27c31;
  --accent-amber: #c27c31;
  --accent-forest: #23623d;
  --accent-maroon: #7c2d30;
  --accent-green: #23623d;
  --accent-red: #7c2d30;
  --accent-purple: #6d28d9;
  
  --color-primary: #1d4c81;
  --color-accent: #c27c31;
  --color-success: #23623d;
  --color-info: #0b6ba0;
  --color-warning: #c27c31;
  
  --text-primary: #1f2a37;
  --text-secondary: #4f5661;
  
  --border-color: #e2d8cc;
  --border-strong: #cfc3af;
  
  --shadow-soft: 0 10px 25px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 16px 32px rgba(0, 0, 0, 0.08);
  --glow-strong: 0 20px 40px rgba(29, 76, 129, 0.15);
  
  color-scheme: light;
}

[data-theme="dark"] {
  /* Explicit dark theme (matches :root) */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --surface: #1e293b;
  --surface-muted: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: #334155;
  --border-strong: #475569;
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.page {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg-primary);
}

.bg-gradient {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--bg-primary);
}

.container {
  width: clamp(320px, 100%, 900px);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-6);
}

.container-wide {
  width: clamp(320px, 100%, 1360px);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-7);
}

.section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
}

.btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-md);
  font: inherit;
  font-weight: 600;
  padding: 12px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-success {
  background: var(--accent-green);
  color: #fff;
}

.btn-danger {
  background: var(--accent-red);
  color: #fff;
}

.input-control {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-primary);
  font: inherit;
}

.logo {
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-amber), var(--accent-blue));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
}

 /* Dark mode - bright blue for high contrast */
[data-theme="dark"] .logo-mark,
.logo-mark {
  color: #60a5fa;
}

 /* Light mode - vibrant blue for visibility */
[data-theme="light"] .logo-mark {
  color: #2563eb;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.logo-mark img {
  height: 52px;
  width: auto;
}

.logo-mark-text {
  font-weight: 700;
  letter-spacing: -0.02em;
}