:root {
  --brand-primary: #1e293b;
  --brand-accent: #6366f1;
  --brand-primary-rgb: 30, 41, 59;
  --brand-accent-rgb: 99, 102, 241;

  --color-bg: #f1f5f9;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-strong: #cbd5e1;

  --admin-sidebar-bg: #0f172a;
  --admin-sidebar-text: #e2e8f0;
  --admin-sidebar-muted: #94a3b8;
  --admin-sidebar-hover: rgba(255, 255, 255, 0.06);
  --admin-sidebar-active: rgba(99, 102, 241, 0.18);

  --color-success: #059669;
  --color-success-bg: #d1fae5;
  --color-warning: #d97706;
  --color-warning-bg: #fef3c7;
  --color-error: #dc2626;
  --color-error-bg: #fee2e2;
  --color-info: #2563eb;
  --color-info-bg: #dbeafe;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  --header-height: 56px;
  --sidebar-width: 260px;
  --bottom-nav-height: 64px;
  --transition: 180ms ease;
  --z-toast: 9000;
  --z-modal: 8000;
  --z-overlay: 7000;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

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

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-sm);
  line-height: 1.25;
  font-weight: 600;
}

p {
  margin: 0 0 var(--space-md);
}

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

[x-cloak] {
  display: none !important;
}

.text-muted {
  color: var(--color-text-muted);
}

.text-center {
  text-align: center;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.mt-md {
  margin-top: var(--space-md);
}

.mb-md {
  margin-bottom: var(--space-md);
}