/**
 * Main Stylesheet for Center of Eastern Indonesian Studies
 * Production-ready, zero-dependency, semantic CSS with CSS custom properties.
 */

:root {
  --theme-primary: #0B1F33;
  --theme-secondary: #0F766E;
  --theme-accent: #167D9A;
  --theme-sand: #D8C3A5;
  --theme-background: #F7F4ED;
  --theme-surface: #FFFFFF;
  --theme-text: #1F2933;
  --theme-muted: #64748B;
  --theme-border: #E2E8F0;

  --font-heading: 'DM Serif Display', Georgia, Cambria, "Times New Roman", Times, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-nav: 'Inter', sans-serif;

  --base-font-size: 16px;
  --heading-line-height: 1.25;
  --body-line-height: 1.65;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-2xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-xs: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.1), 0 2px 6px -2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.12), 0 4px 10px -4px rgba(0, 0, 0, 0.06);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] {
  --theme-background: #0B132B;
  --theme-surface: #1C2541;
  --theme-text: #F1F5F9;
  --theme-border: #334155;
  --theme-muted: #94A3B8;
}

/* ==========================================================================
   Base CSS Reset & Typography
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--base-font-size);
  line-height: var(--body-line-height);
  background-color: var(--theme-background);
  color: var(--theme-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6, .font-heading {
  font-family: var(--font-heading);
  line-height: var(--heading-line-height);
  color: var(--theme-primary);
  font-weight: 700;
}

h1 { font-size: 2.75rem; letter-spacing: -0.025em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.5rem; letter-spacing: -0.015em; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.05em; }

p {
  margin-bottom: 1rem;
}
p:last-child {
  margin-bottom: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

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

button, input, select, textarea {
  font: inherit;
}

/* ==========================================================================
   Layout Containers & Grid Utilities
   ========================================================================== */
.site-container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.site {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1 0 auto;
}

/* Flexbox Helpers */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-grow { flex-grow: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

/* Grid Helpers */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .sm\:flex-row { flex-direction: row; }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:flex-row { flex-direction: row; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .lg\:col-span-4 { grid-column: span 4 / span 4; }
  .lg\:col-span-5 { grid-column: span 5 / span 5; }
  .lg\:col-span-7 { grid-column: span 7 / span 7; }
  .lg\:col-span-8 { grid-column: span 8 / span 8; }
}

/* Gap System */
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-2\.5 { gap: 0.625rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }

/* Spacing Helpers */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-2\.5 { padding: 0.625rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.p-12 { padding: 3rem; }

.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-1\.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2\.5 { padding-top: 0.625rem; padding-bottom: 0.625rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-3\.5 { padding-top: 0.875rem; padding-bottom: 0.875rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }

.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2\.5 { padding-left: 0.625rem; padding-right: 0.625rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-3\.5 { padding-left: 0.875rem; padding-right: 0.875rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-14 { margin-bottom: 3.5rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-auto { margin-top: auto; }

.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-xs { max-width: 20rem; }
.max-w-md { max-width: 28rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-none { max-width: none; }
.w-full { width: 100%; }
.h-full { height: 100%; }

.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.space-y-8 > * + * { margin-top: 2rem; }

/* Typography Helpers */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-\[10px\] { font-size: 10px; line-height: 14px; }
.text-\[11px\] { font-size: 11px; line-height: 15px; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.uppercase { text-transform: uppercase; }
.italic { font-style: italic; }
.not-italic { font-style: normal; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }
.tracking-tight { letter-spacing: -0.025em; }

.leading-none { line-height: 1; }
.leading-tight { line-height: 1.25; }
.leading-snug { line-height: 1.375; }
.leading-relaxed { line-height: 1.625; }

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

.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.break-words { overflow-wrap: break-word; }

/* Colors & Backgrounds */
.bg-white { background-color: #ffffff; }
.bg-slate-50 { background-color: #f8fafc; }
.bg-slate-100 { background-color: #f1f5f9; }
.bg-slate-200 { background-color: #e2e8f0; }
.bg-slate-800 { background-color: #1e293b; }
.bg-slate-900 { background-color: #0f172a; }
.bg-teal-50 { background-color: #f0fdfa; }
.bg-teal-100 { background-color: #ccfbf1; }
.bg-emerald-50 { background-color: #ecfdf5; }
.bg-amber-100 { background-color: #fef3c7; }

.text-white { color: #ffffff; }
.text-slate-200 { color: #e2e8f0; }
.text-slate-300 { color: #cbd5e1; }
.text-slate-400 { color: #94a3b8; }
.text-slate-500 { color: #64748b; }
.text-slate-700 { color: #334155; }
.text-slate-800 { color: #1e293b; }
.text-slate-900 { color: #0f172a; }
.text-teal-200 { color: #99f6e4; }
.text-teal-300 { color: #5eead4; }
.text-teal-400 { color: #2dd4bf; }
.text-emerald-700 { color: #047857; }
.text-amber-800 { color: #92400e; }

/* Borders & Radii */
.rounded { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius); }
.rounded-xl { border-radius: var(--radius-lg); }
.rounded-2xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.border { border: 1px solid var(--theme-border); }
.border-t { border-top: 1px solid var(--theme-border); }
.border-b { border-bottom: 1px solid var(--theme-border); }
.border-l { border-left: 1px solid var(--theme-border); }
.border-r { border-right: 1px solid var(--theme-border); }

.border-white\/10 { border-color: rgba(255, 255, 255, 0.1); }
.border-white\/20 { border-color: rgba(255, 255, 255, 0.2); }
.border-white\/30 { border-color: rgba(255, 255, 255, 0.3); }
.border-slate-200 { border-color: #e2e8f0; }
.border-slate-700 { border-color: #334155; }
.border-slate-800 { border-color: #1e293b; }

.shadow-2xs { box-shadow: var(--shadow-2xs); }
.shadow-xs { box-shadow: var(--shadow-xs); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.top-0 { top: 0; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.z-10 { z-index: 10; }
.z-50 { z-index: 50; }
.overflow-hidden { overflow: hidden; }

.hidden { display: none !important; }
.block { display: block; }

/* Custom User CSS */
/* Custom Institute Styles */
.ceis-quote-mark {
  color: var(--theme-secondary);
  font-family: var(--font-heading);
}