/* Inter font from Bunny Fonts (privacy-friendly) */
@import url("https://fonts.bunny.net/css?family=inter:400,500,600,700");

/* ============================================
   Design Tokens
   Matching deanslog / TigerStay / odusprize
   ============================================ */
:root {
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;

  /* Princeton brand */
  --princeton-orange: #E77500;
  --princeton-orange-light: #FFF3E0;
  --princeton-orange-dark: #7A3D00;

  /* Warm neutrals */
  --warm-50: #FAFAF8;
  --warm-100: #F5F4F0;
  --warm-200: #E8E6E1;
  --warm-300: #D4D1C9;
  --warm-500: #595959;
  --warm-700: #4A4740;
  --warm-900: #2A2825;

  /* Semantic */
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --success-text: #166534;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --error-text: #991b1b;
  --warning-bg: #fefce8;
  --warning-border: #fef08a;
  --warning-text: #854d0e;
  --info-bg: #eff6ff;
  --info-border: #bfdbfe;
  --info-text: #1e40af;

  /* Layout */
  --max-width: 80rem; /* 1280px */
  --border-radius: 0.75rem;
  --border-radius-lg: 1rem;
}

/* ============================================
   Base Reset & Typography
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.625;
  color: var(--warm-700);
  background-color: var(--warm-50);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--warm-900);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: 1.875rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
h4 { font-size: 1.125rem; font-weight: 600; margin-bottom: 0.5rem; }

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

a {
  color: var(--princeton-orange-dark);
  text-decoration: underline;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--princeton-orange);
}

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

/* ============================================
   Focus States (Accessibility)
   ============================================ */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--princeton-orange);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.5rem 1rem;
  background: var(--princeton-orange);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.skip-link:focus {
  left: 50%;
  transform: translateX(-50%);
}