/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   NIKOLAC.NET — Core Design System
   Scandinavian × Apple — Monochromatic Elegance
   In Memory of John G Nicholas II
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

@font-face {
  font-family: 'Geist Sans';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/Geist-Light.woff2') format('woff2');
  font-weight: 300; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Sans';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/Geist-Regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Sans';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/Geist-Medium.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Sans';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/Geist-SemiBold.woff2') format('woff2');
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Sans';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/Geist-Bold.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-mono/GeistMono-Regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-mono/GeistMono-Medium.woff2') format('woff2');
  font-weight: 500; font-style: normal; font-display: swap;
}

:root {
  --color-black: #0a0a0a;
  --color-off-black: #1a1a1a;
  --color-charcoal: #2a2a2a;
  --color-warm-gray-900: #3d3d38;
  --color-warm-gray-700: #6b6b64;
  --color-warm-gray-500: #9a9a92;
  --color-warm-gray-300: #c8c8c0;
  --color-warm-gray-200: #dcdcd4;
  --color-warm-gray-100: #ebebe3;
  --color-warm-gray-50: #f5f5f0;
  --color-cream: #fafaf7;
  --color-white: #ffffff;
  --color-accent: #c8a97e;
  --font-sans: 'Geist Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', 'SF Mono', monospace;
  --space-xs: 4px; --space-sm: 8px; --space-md: 16px;
  --space-lg: 24px; --space-xl: 32px; --space-2xl: 48px;
  --space-3xl: 64px; --space-4xl: 96px; --space-5xl: 128px;
  --space-section: 160px;
  --border-hairline: 0.5px solid rgba(0,0,0,0.08);
  --border-thin: 1px solid rgba(0,0,0,0.08);
  --border-medium: 1px solid rgba(0,0,0,0.12);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.10);
  --blur-sm: blur(8px); --blur-md: blur(20px); --blur-lg: blur(40px);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 0.2s; --duration-normal: 0.4s;
  --duration-slow: 0.6s; --duration-glacial: 1.2s;
  --max-width: 1440px;
  --content-padding: clamp(24px, 5vw, 80px);
  --header-height: 72px;
}

*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html {
  font-size:16px; -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale; text-rendering:optimizeLegibility;
  scroll-behavior:smooth;
}
body {
  font-family:var(--font-sans); background:var(--color-cream);
  color:var(--color-black); line-height:1.6; letter-spacing:-0.01em;
  overflow-x:hidden; min-height:100vh;
}
::selection { background:var(--color-black); color:var(--color-white); }
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--color-warm-gray-300); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--color-warm-gray-500); }
img { max-width:100%; height:auto; display:block; }
a { color:inherit; text-decoration:none; transition:color var(--duration-fast) var(--ease-out-expo); }
ul { list-style:none; }
button { cursor:pointer; font-family:inherit; }

/* Typography */
h1,h2,h3,h4,h5,h6 {
  font-family:var(--font-sans); font-weight:500;
  letter-spacing:-0.03em; line-height:1.1; color:var(--color-black);
}
.display-xl {
  font-size:clamp(3.5rem, 8vw, 8rem); font-weight:600;
  letter-spacing:-0.04em; line-height:0.95;
}
.display-lg {
  font-size:clamp(2.5rem, 5vw, 5rem); font-weight:600;
  letter-spacing:-0.03em; line-height:1.0;
}
.display-md {
  font-size:clamp(2rem, 4vw, 3.5rem); font-weight:500;
  letter-spacing:-0.03em; line-height:1.05;
}
.heading-lg { font-size:clamp(1.5rem, 2.5vw, 2.5rem); font-weight:500; letter-spacing:-0.02em; }
.heading-md { font-size:clamp(1.25rem, 2vw, 1.75rem); font-weight:500; letter-spacing:-0.02em; }
.body-lg { font-size:clamp(1rem, 1.5vw, 1.25rem); font-weight:400; line-height:1.7; letter-spacing:-0.01em; }
.body-md { font-size:0.9375rem; font-weight:400; line-height:1.65; }
.body-sm { font-size:0.8125rem; font-weight:400; line-height:1.6; }
.caption {
  font-size:0.75rem; font-weight:400; letter-spacing:0.04em;
  text-transform:uppercase; color:var(--color-warm-gray-700);
}
.label {
  font-family:var(--font-mono); font-size:0.6875rem; font-weight:500;
  letter-spacing:0.08em; text-transform:uppercase; color:var(--color-warm-gray-500);
}
.text-muted { color:var(--color-warm-gray-700); }
.text-accent { color:var(--color-accent); }

a.text-link {
  position:relative; color:var(--color-black);
}
a.text-link::after {
  content:''; position:absolute; bottom:-2px; left:0; width:100%; height:1px;
  background:var(--color-black); transform:scaleX(0); transform-origin:right;
  transition:transform var(--duration-normal) var(--ease-out-expo);
}
a.text-link:hover::after { transform:scaleX(1); transform-origin:left; }

/* Layout */
.container { width:100%; max-width:var(--max-width); margin:0 auto; padding:0 var(--content-padding); }
.container-narrow { max-width:900px; margin:0 auto; padding:0 var(--content-padding); }
.container-wide { max-width:1600px; margin:0 auto; padding:0 var(--content-padding); }
.section { padding:var(--space-section) 0; }
.section-sm { padding:var(--space-4xl) 0; }
.section-lg { padding:calc(var(--space-section)*1.5) 0; }

/* Grid */
.grid { display:grid; gap:var(--space-xl); }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.grid-4 { grid-template-columns:repeat(4,1fr); }
@media(max-width:1024px) { .grid-3,.grid-4 { grid-template-columns:repeat(2,1fr); } }
@media(max-width:640px) { .grid-2,.grid-3,.grid-4 { grid-template-columns:1fr; } }

/* Header */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  height:var(--header-height); display:flex; align-items:center;
  padding:0 var(--content-padding);
  transition:background var(--duration-normal) var(--ease-out-expo),
             backdrop-filter var(--duration-normal) var(--ease-out-expo);
}
.site-header.scrolled {
  background:rgba(250,250,247,0.72);
  backdrop-filter:var(--blur-lg); -webkit-backdrop-filter:var(--blur-lg);
  border-bottom:var(--border-hairline);
}
.header-inner {
  width:100%; max-width:var(--max-width); margin:0 auto;
  display:flex; align-items:center; justify-content:space-between;
}
.logo {
  font-family:var(--font-sans); font-size:1.25rem; font-weight:600;
  letter-spacing:-0.03em; color:var(--color-black); display:flex;
  align-items:center; gap:var(--space-sm);
}
.logo-mark {
  border: none;
  width:28px; height:28px; border:1.5px solid var(--color-black);
  border-radius:4px; display:flex; align-items:center; justify-content:center;
  font-size:0.625rem; font-weight:700; letter-spacing:0;
}
.nav-links { display:flex; align-items:center; gap:var(--space-xl); }
.nav-links a {
  font-size:0.875rem; font-weight:450; letter-spacing:-0.01em;
  color:var(--color-warm-gray-900); position:relative;
  transition:color var(--duration-fast) ease;
}
.nav-links a:hover, .nav-links a.active { color:var(--color-black); }
.nav-links a.active::after {
  content:''; position:absolute; bottom:-4px; left:0; width:100%;
  height:1px; background:var(--color-black);
}
.nav-cta {
  padding:8px 20px; background:var(--color-black); color:var(--color-white)!important;
  border-radius:100px; font-weight:500!important; font-size:0.8125rem!important;
  transition:all var(--duration-fast) var(--ease-out-expo)!important;
}
.nav-cta:hover { background:var(--color-off-black); transform:translateY(-1px); box-shadow:var(--shadow-md); }
.nav-toggle { display:none; flex-direction:column; gap:5px; cursor:pointer; padding:8px; background:none; border:none; }
.nav-toggle span { display:block; width:20px; height:1.5px; background:var(--color-black); transition:all var(--duration-normal) var(--ease-out-expo); }
@media(max-width:768px) {
  .nav-links { display:none; position:fixed; top:var(--header-height); left:0; width:100%;
    background:rgba(250,250,247,0.95); backdrop-filter:var(--blur-lg);
    flex-direction:column; padding:var(--space-xl); gap:var(--space-lg);
    border-bottom:var(--border-thin);
  }
  .nav-links.active { display:flex; }
  .nav-toggle { display:flex; }
}

/* Buttons */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 28px; border-radius:100px; font-family:var(--font-sans);
  font-size:0.875rem; font-weight:500; letter-spacing:-0.01em; cursor:pointer;
  transition:all var(--duration-normal) var(--ease-out-expo); border:none;
  text-decoration:none; position:relative; overflow:hidden;
}
.btn-primary { background:var(--color-black); color:var(--color-white); }
.btn-primary:hover { background:var(--color-off-black); transform:translateY(-2px); box-shadow:var(--shadow-lg); }
.btn-outline { background:transparent; color:var(--color-black); border:1px solid rgba(0,0,0,0.15); }
.btn-outline:hover { background:var(--color-black); color:var(--color-white); border-color:var(--color-black); }
.btn-ghost { background:transparent; color:var(--color-black); padding:8px 16px; }
.btn-ghost:hover { background:rgba(0,0,0,0.04); }
.btn-lg { padding:16px 36px; font-size:1rem; }

/* Cards */
.card {
  background:var(--color-white); border-radius:20px;
  border:var(--border-thin); overflow:hidden; position:relative;
  transition:all var(--duration-normal) var(--ease-out-expo);
}
.card:hover { transform:translateY(-4px); box-shadow:var(--shadow-xl); }
.card-glass {
  background:rgba(255,255,255,0.6); backdrop-filter:var(--blur-md);
  -webkit-backdrop-filter:var(--blur-md); border:var(--border-hairline); border-radius:20px;
}
.card-image {
  width:100%; aspect-ratio:4/3; object-fit:cover;
  background:var(--color-warm-gray-200); position:relative; overflow:hidden;
}
.card-image img { width:100%; height:100%; object-fit:cover; transition:transform var(--duration-glacial) var(--ease-out-expo); }
.card:hover .card-image img { transform:scale(1.05); }
.card-body { padding:var(--space-lg); }
.card-label {
  font-family:var(--font-mono); font-size:0.6875rem; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--color-warm-gray-500); margin-bottom:var(--space-sm);
}
.card-title { font-size:1.25rem; font-weight:500; letter-spacing:-0.02em; margin-bottom:var(--space-sm); }
.card-text { font-size:0.875rem; color:var(--color-warm-gray-700); line-height:1.6; }

#three-background { position:fixed; top:0; left:0; width:100%; height:100%; z-index:-1; pointer-events:none; opacity:0.55; }

/* Hero */
.hero { min-height:100vh; display:flex; align-items:center; position:relative; overflow:hidden; padding-top:var(--header-height); }
.hero-content { max-width:800px; z-index:1; }
.hero-eyebrow {
  font-family:var(--font-mono); font-size:0.6875rem; letter-spacing:0.12em;
  text-transform:uppercase; color:var(--color-warm-gray-500);
  margin-bottom:var(--space-lg);
}
.hero-title { margin-bottom:var(--space-lg); }
.hero-subtitle {
  font-size:clamp(1rem, 2vw, 1.25rem); color:var(--color-warm-gray-700);
  max-width:560px; line-height:1.7; margin-bottom:var(--space-xl);
}
.hero-actions { display:flex; gap:var(--space-md); }

[data-animate] { opacity:0; transform:translateY(30px); }
[data-animate].animated { opacity:1; transform:translateY(0); transition:opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo); }

/* Stats */
.stat-number { font-size:clamp(2.5rem, 4vw, 4rem); font-weight:600; letter-spacing:-0.04em; line-height:1; color:var(--color-black); }
.stat-label {
  font-family:var(--font-mono); font-size:0.6875rem; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--color-warm-gray-500); margin-top:var(--space-sm);
}

/* Forms */
.form-group { margin-bottom:var(--space-lg); }
.form-label { display:block; font-size:0.8125rem; font-weight:500; letter-spacing:-0.01em; margin-bottom:var(--space-sm); color:var(--color-black); }
.form-input {
  width:100%; padding:14px 18px; background:var(--color-white);
  border:var(--border-medium); border-radius:12px; font-family:var(--font-sans);
  font-size:0.9375rem; color:var(--color-black);
  transition:all var(--duration-fast) ease; outline:none;
}
.form-input:focus { border-color:var(--color-black); box-shadow:0 0 0 3px rgba(0,0,0,0.05); }
.form-input::placeholder { color:var(--color-warm-gray-300); }

/* Toast */
.toast {
  position:fixed; bottom:32px; right:32px; background:var(--color-black);
  color:var(--color-white); padding:14px 24px; border-radius:100px;
  font-size:0.875rem; font-weight:450; z-index:9999;
  opacity:0; transform:translateY(20px); pointer-events:none;
  transition:all var(--duration-normal) var(--ease-out-expo);
}
.toast.visible { opacity:1; transform:translateY(0); }

/* Footer */
.site-footer { background:var(--color-black); color:var(--color-white); padding:var(--space-4xl) 0 var(--space-xl); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:var(--space-3xl); margin-bottom:var(--space-4xl); }
.footer-brand { font-size:1.5rem; font-weight:600; letter-spacing:-0.03em; margin-bottom:var(--space-md); }
.footer-description { color:rgba(255,255,255,0.5); font-size:0.875rem; line-height:1.7; max-width:300px; margin-bottom:var(--space-lg); }
.footer-heading {
  font-family:var(--font-mono); font-size:0.625rem; letter-spacing:0.1em;
  text-transform:uppercase; color:rgba(255,255,255,0.35); margin-bottom:var(--space-lg);
}
.footer-links { display:flex; flex-direction:column; gap:var(--space-sm); }
.footer-links a { color:rgba(255,255,255,0.6); font-size:0.875rem; transition:color var(--duration-fast) ease; }
.footer-links a:hover { color:var(--color-white); }
.footer-bottom {
  padding-top:var(--space-xl); border-top:1px solid rgba(255,255,255,0.08);
  display:flex; justify-content:space-between; align-items:center;
  font-size:0.8125rem; color:rgba(255,255,255,0.35);
}
.footer-memorial { font-style:italic; color:rgba(255,255,255,0.25); }
@media(max-width:768px) { .footer-grid { grid-template-columns:1fr 1fr; } }
@media(max-width:480px) { .footer-grid { grid-template-columns:1fr; } .footer-bottom { flex-direction:column; gap:var(--space-md); text-align:center; } }

/* Memorial */
.memorial { text-align:center; padding:var(--space-4xl) 0; background:var(--color-white); }
.memorial-text {
  font-family:var(--font-sans); font-size:clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight:300; font-style:italic; color:var(--color-warm-gray-500);
  letter-spacing:-0.01em; line-height:1.6; max-width:600px; margin:0 auto;
}
.memorial-name { display:block; margin-top:var(--space-lg); font-style:normal; font-weight:500; color:var(--color-warm-gray-700); font-size:0.9375rem; letter-spacing:0.02em; }

/* Login */
.login-page { min-height:100vh; display:flex; align-items:center; justify-content:center; padding:var(--space-xl); position:relative; }
.login-card {
  width:100%; max-width:440px; background:var(--color-white); border-radius:24px;
  border:var(--border-thin); padding:var(--space-3xl);
  position:relative; z-index:1; box-shadow:var(--shadow-xl);
}
.login-card h1 { font-size:1.5rem; font-weight:500; letter-spacing:-0.02em; margin-bottom:var(--space-sm); }
.login-subtitle { color:var(--color-warm-gray-500); font-size:0.875rem; margin-bottom:var(--space-xl); }
.login-footer { text-align:center; margin-top:var(--space-lg); font-size:0.8125rem; color:var(--color-warm-gray-500); }
.login-footer a { color:var(--color-black); font-weight:500; }

/* Dashboard */
.dashboard-layout { display:flex; min-height:100vh; padding-top:var(--header-height); }
.dashboard-sidebar {
  width:260px; background:var(--color-white);
  border-right:var(--border-thin); padding:var(--space-xl);
  position:fixed; top:var(--header-height); left:0;
  height:calc(100vh - var(--header-height)); overflow-y:auto;
}
.dashboard-main { flex:1; margin-left:260px; padding:var(--space-2xl); }
.dashboard-nav-item {
  display:flex; align-items:center; gap:var(--space-md); padding:10px 14px;
  border-radius:10px; font-size:0.875rem; font-weight:450;
  color:var(--color-warm-gray-700); transition:all var(--duration-fast) ease;
  margin-bottom:var(--space-xs);
}
.dashboard-nav-item:hover, .dashboard-nav-item.active { background:rgba(0,0,0,0.04); color:var(--color-black); }
@media(max-width:768px) {
  .dashboard-sidebar { display:none; }
  .dashboard-main { margin-left:0; }
}

/* API cards */
.api-card {
  background:var(--color-white); border:var(--border-thin);
  border-radius:16px; padding:var(--space-xl);
  transition:all var(--duration-normal) var(--ease-out-expo);
}
.api-card:hover { border-color:var(--color-black); box-shadow:var(--shadow-lg); }
.api-method {
  display:inline-block; font-family:var(--font-mono); font-size:0.625rem;
  font-weight:600; letter-spacing:0.06em; padding:4px 10px;
  border-radius:6px; margin-bottom:var(--space-md);
}
.api-method.get { background:#e8f5e9; color:#2e7d32; }
.api-method.post { background:#e3f2fd; color:#1565c0; }
.api-endpoint {
  font-family:var(--font-mono); font-size:0.875rem; font-weight:500;
  color:var(--color-black); margin-bottom:var(--space-sm); word-break:break-all;
}
.api-description { font-size:0.875rem; color:var(--color-warm-gray-700); line-height:1.6; }

/* Property showcase */
.property-showcase {
  position:relative; border-radius:24px; overflow:hidden;
  margin-bottom:var(--space-2xl);
}
.property-showcase img { width:100%; height:500px; object-fit:cover; }
.property-showcase-overlay {
  position:absolute; bottom:0; left:0; right:0; padding:var(--space-2xl);
  background:linear-gradient(transparent, rgba(0,0,0,0.7)); color:var(--color-white);
}
.property-meta { display:flex; gap:var(--space-xl); flex-wrap:wrap; }
.property-meta-item { display:flex; align-items:center; gap:var(--space-sm); }
.property-meta-value { font-size:1.25rem; font-weight:600; letter-spacing:-0.02em; }
.property-meta-label { font-size:0.75rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--color-warm-gray-500); }

/* Spinner */
.spinner {
  width:20px; height:20px; border:2px solid rgba(0,0,0,0.1);
  border-top-color:var(--color-black); border-radius:50%; animation:spin 0.6s linear infinite;
}

/* Keyframes */
@keyframes fadeUp { from{opacity:0;transform:translateY(30px);} to{opacity:1;transform:translateY(0);} }
@keyframes fadeIn { from{opacity:0;} to{opacity:1;} }
@keyframes spin { to{transform:rotate(360deg);} }
@keyframes float { 0%,100%{transform:translateY(0px);} 50%{transform:translateY(-10px);} }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.5;} }

/* Utilities */
.text-center { text-align:center; }
.flex { display:flex; }
.flex-col { flex-direction:column; }
.items-center { align-items:center; }
.justify-between { justify-content:space-between; }
.justify-center { justify-content:center; }
.gap-sm { gap:var(--space-sm); }
.gap-md { gap:var(--space-md); }
.gap-lg { gap:var(--space-lg); }
.gap-xl { gap:var(--space-xl); }
.w-full { width:100%; }
.relative { position:relative; }
.overflow-hidden { overflow:hidden; }
.z-10 { z-index:10; }
.mt-md { margin-top:var(--space-xl); }
.mt-lg { margin-top:var(--space-3xl); }
.mb-md { margin-bottom:var(--space-xl); }
.mb-lg { margin-bottom:var(--space-3xl); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

@media(max-width:768px) {
  :root { --space-section:96px; --header-height:60px; }
  .hero { min-height:90vh; text-align:center; }
  .hero-content { max-width:100%; }
  .hero-subtitle { max-width:100%; }
  .hero-actions { justify-content:center; flex-wrap:wrap; }
  .login-card { padding:var(--space-xl); }
}
@media print {
  .site-header,.site-footer,#three-background,.nav-toggle { display:none!important; }
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   DARK MODE
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
[data-theme="dark"] {
  --color-black: #f5f5f0;
  --color-off-black: #e0e0d8;
  --color-charcoal: #d0d0c8;
  --color-warm-gray-900: #c8c8c0;
  --color-warm-gray-700: #a0a098;
  --color-warm-gray-500: #787870;
  --color-warm-gray-300: #505048;
  --color-warm-gray-200: #3a3a34;
  --color-warm-gray-100: #2a2a26;
  --color-warm-gray-50: #1e1e1c;
  --color-cream: #141412;
  --color-white: #1a1a18;
  --color-accent: #d4b896;
  --border-hairline: 0.5px solid rgba(255,255,255,0.08);
  --border-thin: 1px solid rgba(255,255,255,0.08);
  --border-medium: 1px solid rgba(255,255,255,0.12);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.6);
  color-scheme: dark;
}

[data-theme="dark"] body { background: #141412; color: #f5f5f0; }
[data-theme="dark"] .site-header.scrolled { background: rgba(20,20,18,0.85); }
[data-theme="dark"] .site-header { border-bottom-color: rgba(255,255,255,0.06); }
[data-theme="dark"] .card { background: #1a1a18; }
[data-theme="dark"] .card-glass { background: rgba(20,20,18,0.7); }
[data-theme="dark"] .api-card { background: #1a1a18; }
[data-theme="dark"] .memorial { background: #1a1a18; }
[data-theme="dark"] .site-footer { background: #0a0a08; }
[data-theme="dark"] .btn-outline { border-color: rgba(255,255,255,0.2); color: #f5f5f0; }
[data-theme="dark"] .btn-outline:hover { background: #f5f5f0; color: #0a0a0a; }
[data-theme="dark"] .btn-ghost:hover { background: rgba(255,255,255,0.06); }
[data-theme="dark"] .form-input { background: #1a1a18; color: #f5f5f0; border-color: rgba(255,255,255,0.12); }
[data-theme="dark"] .form-input:focus { border-color: #f5f5f0; box-shadow: 0 0 0 3px rgba(255,255,255,0.05); }
[data-theme="dark"] .form-input::placeholder { color: #505048; }
[data-theme="dark"] ::selection { background: #f5f5f0; color: #0a0a0a; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #3a3a34; }
[data-theme="dark"] .divider { background: rgba(255,255,255,0.06); }
[data-theme="dark"] .divider-thick { background: #f5f5f0; }
[data-theme="dark"] .nav-links a { color: #a0a098; }
[data-theme="dark"] .nav-links a:hover,
[data-theme="dark"] .nav-links a.active { color: #f5f5f0; }
[data-theme="dark"] .nav-links a.active::after { background: #f5f5f0; }
[data-theme="dark"] .nav-cta { background: #f5f5f0; color: #0a0a0a!important; }
[data-theme="dark"] .nav-cta:hover { background: #e0e0d8; }
[data-theme="dark"] .login-card { background: #1a1a18; }
[data-theme="dark"] .toast { background: #f5f5f0; color: #0a0a0a; }
[data-theme="dark"] .api-method.get { background: #1a3a1a; color: #81c784; }
[data-theme="dark"] .api-method.post { background: #1a2a3a; color: #64b5f6; }
[data-theme="dark"] .dashboard-stat-card { background: #1a1a18; }
[data-theme="dark"] .login-error { background: #3a1a1a; color: #ef9a9a; }
[data-theme="dark"] .spinner { border-color: rgba(255,255,255,0.1); border-top-color: #f5f5f0; }

/* Dark mode toggle */
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  border: var(--border-thin); background: transparent;
  cursor: pointer; font-size: 0.875rem; color: var(--color-warm-gray-700);
  transition: all var(--duration-fast) var(--ease-out-expo);
  margin-left: var(--space-sm);
}
.theme-toggle:hover { background: rgba(0,0,0,0.05); color: var(--color-black); }
[data-theme="dark"] .theme-toggle:hover { background: rgba(255,255,255,0.08); color: #f5f5f0; }