:root {
  /* Dark Navy Theme Palette */
  --bg-primary: #0f172a;      /* Deep Navy Background */
  --bg-secondary: #1e293b;    /* Card Background */
  --bg-tertiary: #334155;     /* Input/Hover Background */

  --text-primary: #f8fafc;    /* White text */
  --text-secondary: #94a3b8;  /* Muted text */
  --text-tertiary: #64748b;   /* Subtle text */

  --primary-color: #6366f1;   /* Indigo */
  --primary-hover: #4f46e5;

  --accent-color: #f59e0b;    /* Amber/Orange */

  --border-color: #334155;
  --border-light: #475569;

  --danger-color: #ef4444;

  /* Dimensions */
  --container-width: 1000px;
  --card-radius: 12px;
  --btn-radius: 6px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Utilities */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-danger {
  color: var(--danger-color) !important;
}