/* Amodei Theme Overrides */
@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,200..800;1,6..72,200..800&display=swap');

:root {
  /* Color Palette - Ivory & Slate */
  --amodei-ivory-light: #faf9f5;
  --amodei-ivory-medium: #f0eee6;
  --amodei-ivory-dark: #e8e6dc;
  
  --amodei-slate-light: #5e5d59;
  --amodei-slate-medium: #3d3d3a;
  --amodei-slate-dark: #1f1e1d;
  
  --amodei-cloud-light: #d1cfc5;
  --amodei-cloud-medium: #b0aea5;
  --amodei-cloud-dark: #87867f;

  /* Semantic Variables (Light Mode Default) */
  --bg-color: var(--amodei-ivory-medium);
  --text-color: var(--amodei-slate-dark);
  --heading-color: var(--amodei-slate-dark);
  --link-color: var(--amodei-slate-dark);
  --link-hover-color: var(--amodei-slate-light);
  --border-color: var(--amodei-cloud-light);
  --secondary-text: var(--amodei-cloud-medium);
  --code-bg: var(--amodei-ivory-dark);
  --card-bg: #fff;
  
  /* Typography */
  --font-body: 'Newsreader', 'Times New Roman', serif;
  --font-heading: 'Newsreader', 'Times New Roman', serif;
  --font-mono: "PT Mono", monospace;
}

/* Dark Mode Overrides */
body.dark-mode {
  --bg-color: var(--amodei-slate-dark);
  --text-color: var(--amodei-ivory-medium);
  --heading-color: var(--amodei-ivory-medium);
  --link-color: var(--amodei-ivory-medium);
  --link-hover-color: var(--amodei-ivory-dark);
  --border-color: var(--amodei-slate-light);
  --secondary-text: var(--amodei-slate-light);
  --code-bg: var(--amodei-slate-medium);
  --card-bg: rgba(255,255,255,0.05);
}

/* Global Reset & Base Styles */
html {
  font-family: var(--font-body);
  font-optical-sizing: auto;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography Overrides */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading) !important;
  color: var(--heading-color) !important;
  font-weight: 500;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; line-height: 1.1; margin-bottom: 1.5rem; }
h2 { font-size: 1.8rem; margin-top: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; margin-top: 2rem; }

p {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

a {
  color: var(--link-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--link-hover-color);
  text-decoration-thickness: 2px;
}

/* Container & Layout */
.container {
  max-width: 42rem;
}

/* Code & Pre */
code, pre {
  font-family: var(--font-mono);
  background-color: var(--code-bg);
  color: var(--text-color);
  border-radius: 4px;
}

pre {
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

/* Masthead */
.masthead-title, .masthead-title a {
  color: var(--text-color) !important;
  font-family: var(--font-heading) !important;
}

.masthead-title small {
  color: var(--secondary-text) !important;
}

/* Sidebar Overrides */
.sidebar {
  background-color: var(--bg-color);
  color: var(--text-color);
  border-right: 1px solid var(--border-color);
}
.sidebar-nav-item {
  color: var(--text-color);
}
.sidebar-nav-item.active, .sidebar-nav-item:hover, .sidebar-nav-item:focus {
  background-color: rgba(0,0,0,0.05);
  color: var(--text-color);
  border-left-color: var(--text-color);
}
body.dark-mode .sidebar-nav-item.active {
    background-color: rgba(255,255,255,0.1);
}

/* =========================================
   CORE / TECHNICAL DOCS OVERRIDES
   ========================================= */

/* Hero Section */
.tech-hero {
  background: var(--bg-color) !important;
  border-bottom: 1px solid var(--border-color) !important;
}
.hero-title {
  color: var(--heading-color) !important;
  font-family: var(--font-heading) !important;
}
.hero-subtitle, .hero-body {
  color: var(--secondary-text) !important;
  font-family: var(--font-body) !important;
}

/* Wireframe BG Adjustment for light mode */
body:not(.dark-mode) .snn-wireframe-bg {
  opacity: 0.05;
  filter: invert(1);
}

/* Section Headers */
.section-title {
  color: var(--heading-color) !important;
  font-family: var(--font-heading) !important;
}
.section-subtitle {
  color: var(--secondary-text) !important;
  font-family: var(--font-body) !important;
}

/* Cards (Pillars, Request Box) */
.pillar-card.layer-card, .request-box {
  background: var(--card-bg) !important;
  border-color: var(--border-color) !important;
}
.card-header {
  border-bottom-color: var(--border-color) !important;
}

/* Text Elements */
.text-body, .pillar-features li, .access-list li, .request-instruction {
  color: var(--text-color) !important;
  font-family: var(--font-body) !important;
}
.pillar-features strong {
  color: var(--heading-color) !important;
}

/* Architecture Diagram */
.architecture-diagram-container {
  background: var(--card-bg) !important;
  border-color: var(--border-color) !important;
}
.arch-node {
  background: var(--bg-color) !important;
  border-color: var(--border-color) !important;
}
.node-label {
  color: var(--text-color) !important;
  font-family: var(--font-body) !important;
}
.connection-line {
  background: var(--border-color) !important;
}
.connection-line::after { border-left-color: var(--border-color) !important; }
.connection-line::before { border-right-color: var(--border-color) !important; }
.connection-label {
  color: var(--secondary-text) !important;
  font-family: var(--font-body) !important; /* Maybe keep sans for small labels? sticking to serif for consistency */
}

/* Quotes */
.research-quote {
  background: var(--card-bg) !important;
  color: var(--text-color) !important;
  font-family: var(--font-body) !important;
}

/* Status Grid */
.status-grid {
  background: var(--card-bg) !important;
  border-color: var(--border-color) !important;
}
.status-item .label {
  color: var(--secondary-text) !important;
  font-family: var(--font-body) !important;
}
.status-item .value {
  color: var(--text-color) !important;
}

/* Buttons */
.btn-access, .btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-family: var(--font-body) !important;
  font-weight: 600;
  transition: opacity 0.2s, background-color 0.2s;
  cursor: pointer;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--text-color);
  color: var(--bg-color);
  border: 1px solid var(--text-color);
}

.btn-primary:hover {
  opacity: 0.9;
  text-decoration: none;
  color: var(--bg-color);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--text-color);
  text-decoration: none;
}

/* Toggle Switch Styling */
.theme-toggle-wrapper {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 50;
}

.theme-toggle {
  opacity: 0;
  position: absolute;
}

.theme-toggle-label {
  width: 50px;
  height: 26px;
  background-color: var(--amodei-slate-dark);
  border-radius: 50px;
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px;
  transition: background-color 0.3s ease;
  border: 1px solid var(--border-color);
}

.theme-toggle-ball {
  background-color: var(--amodei-ivory-light);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  position: absolute;
  left: 3px;
  top: 2px;
  transition: transform 0.3s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* Dark Mode Toggle State */
body.dark-mode .theme-toggle-label {
  background-color: var(--amodei-ivory-medium);
}

body.dark-mode .theme-toggle-ball {
  transform: translateX(24px);
  background-color: var(--amodei-slate-dark);
}