/* ==========================================================================
   STATED DIRECTION: THE SWISS LEGAL GRID
   --------------------------------------------------------------------------
   Anchor: Swiss
   Why: Legal documentation requires extreme structural clarity and readability.
        Instead of a generic dark-glow developer theme, we commit to the Swiss
        anchor: a pure white/light neutral surface (#FFFFFF / #F9FAFB),
        a single typographic family (Helvetica Neue), and a bold, singular
        accent of Yves Klein Blue (#002FA7) used for focus states and branding.
   Differentiator: A prominent 1px hairline grid that structures all components,
                   with large bold numerals (01, 02, etc.) serving as anchor
                   points that highlight on hover/scroll.
   ========================================================================== */

/* ===== DESIGN TOKENS ===== */
:root {
  /* Color Palette */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --text-primary: #000000;
  --text-secondary: #374151;
  --text-muted: #6b7280;
  --text-dim: #9ca3af;
  
  /* Accent Color: Yves Klein Blue */
  --accent: #002FA7;
  --accent-hover: #002582;
  --accent-light: rgba(0, 47, 167, 0.05);
  
  /* Semantic Colors (Swiss variations - flat, no glow) */
  --success: #059669;
  --success-bg: #f0fdf4;
  --success-border: #10b981;
  
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --warning-border: #f59e0b;
  
  --info: #2563eb;
  --info-bg: #eff6ff;
  --info-border: #3b82f6;

  /* Structure */
  --border-color: #e5e7eb;
  --border-dark: #111111;
  
  /* Typography */
  --font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  
  /* Timing */
  --transition-fast: 0.15s ease-in-out;
  --transition-smooth: 0.25s ease-in-out;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-secondary);
}

body {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Hide background canvas and orbs from previous theme */
#bg-canvas, .bg-orb {
  display: none !important;
}

/* ===== LAYOUT & GRID ===== */
.page-wrapper {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
}

/* ===== HEADER ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 0 1.5rem 0;
  border-bottom: 1px solid var(--border-dark);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: #ffffff;
  transition: background var(--transition-fast);
}

.logo-section:hover .logo-icon {
  background: var(--accent-hover);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

/* Navigation */
nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  border-bottom-color: var(--text-dim);
}

.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--bg-tertiary);
}

@media (max-width: 640px) {
  .menu-toggle {
    display: flex;
  }
  
  nav {
    display: none;
    position: absolute;
    top: 5rem;
    left: 2rem;
    right: 2rem;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg-primary);
    border: 1px solid var(--border-dark);
    padding: 1.5rem;
    z-index: 100;
    gap: 1rem;
  }
  
  nav.open {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    padding: 0.5rem 0;
  }
}

/* ===== HERO SECTION ===== */
.hero-section {
  padding: 4.5rem 0 3.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border-dark);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-badge svg {
  stroke: var(--accent);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.05em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  background: none;
  -webkit-text-fill-color: initial;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 3rem;
  max-width: 680px;
}

/* Trust indicators */
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-bottom: 4rem;
  width: 100%;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.trust-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Choice Cards Grid */
.grid-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  border: 1px solid var(--border-color);
  margin-top: 1rem;
}

.choice-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  padding: 3rem;
  background: var(--bg-primary);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
  position: relative;
}

.grid-choices > .choice-card:first-child {
  border-right: 1px solid var(--border-color);
}

@media (max-width: 768px) {
  .grid-choices {
    grid-template-columns: 1fr;
  }
  .grid-choices > .choice-card:first-child {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
}

.choice-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.choice-card:hover {
  background: var(--bg-secondary);
}

.choice-card:hover::before {
  transform: scaleX(1);
}

.choice-icon-number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-dim);
  line-height: 1;
  margin-bottom: 1.5rem;
  font-style: italic;
  letter-spacing: -0.05em;
  transition: color var(--transition-fast);
}

.choice-card:hover .choice-icon-number {
  color: var(--accent);
}

.choice-card h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 1rem;
  padding-left: 0;
}

.choice-card h2::before {
  display: none;
}

.choice-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
  padding: 0.8rem 1.5rem;
  background: var(--text-primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: var(--transition-fast);
  border: none;
  cursor: pointer;
  margin-top: auto;
  align-self: flex-start;
}

.btn-primary:hover {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary svg {
  transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

/* ===== DOCUMENT LAYOUT ===== */
.doc-wrapper {
  display: grid;
  grid-template-columns: 240px 1fr;
  align-items: start;
  border-top: 1px solid var(--border-dark);
  margin-top: 1rem;
}

@media (max-width: 900px) {
  .doc-wrapper {
    grid-template-columns: 1fr;
  }
}

/* Sidebar Navigation */
.sidebar {
  position: sticky;
  top: 0;
  padding: 2.5rem 2rem 2.5rem 0;
  border-right: 1px solid var(--border-color);
  height: calc(100vh - 4rem);
  overflow-y: auto;
}

@media (max-width: 900px) {
  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
  }
}

.sidebar-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

.sidebar-menu {
  list-style: none;
  padding-left: 0;
}

.sidebar-item {
  margin-bottom: 0.5rem;
  padding-left: 0;
}

.sidebar-item::before {
  display: none;
}

.sidebar-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  display: block;
  padding: 0.4rem 0.75rem;
  transition: var(--transition-fast);
  border-left: 2px solid transparent;
}

.sidebar-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.sidebar-link.active {
  color: var(--accent);
  background: var(--accent-light);
  border-left-color: var(--accent);
}

/* Main Document Content */
main.glass-card {
  padding: 3rem 0 3rem 3rem;
  background: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
}

main.glass-card::before {
  display: none;
}

@media (max-width: 900px) {
  main.glass-card {
    padding: 2rem 0;
  }
}

/* ===== TYPOGRAPHY ===== */
h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 2rem;
  background: none;
  -webkit-text-fill-color: initial;
}

h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  position: relative;
  padding-left: 0;
}

h2::before {
  display: none;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.96rem;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
}

code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.85em;
  padding: 0.2rem 0.4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

ul, ol {
  margin-bottom: 2rem;
  padding-left: 0;
  list-style: none;
}

li {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.96rem;
  line-height: 1.6;
}

li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.65em;
  width: 5px;
  height: 5px;
  background: var(--accent);
}

strong {
  color: var(--text-primary);
  font-weight: 700;
}

small {
  color: var(--text-muted);
  font-size: 0.8em;
}

/* ===== META INFO ===== */
.meta-info {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0;
  background: none;
  border: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.meta-item svg {
  color: var(--text-dim);
  flex-shrink: 0;
}

/* ===== ALERT BOXES (Swiss Style) ===== */
.alert-box {
  padding: 1.5rem;
  margin: 2rem 0;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  border-left: 4px solid var(--text-muted);
  transition: transform var(--transition-fast);
}

.alert-box:hover {
  transform: none; /* No scaling in Swiss grid */
}

.alert-box.success {
  background: var(--success-bg);
  border-color: var(--border-color);
  border-left-color: var(--success-border);
}

.alert-box.success .alert-icon {
  color: var(--success);
}

.alert-box.warning {
  background: var(--warning-bg);
  border-color: var(--border-color);
  border-left-color: var(--warning-border);
}

.alert-box.warning .alert-icon {
  color: var(--warning);
}

.alert-box.info {
  background: var(--info-bg);
  border-color: var(--border-color);
  border-left-color: var(--info-border);
}

.alert-box.info .alert-icon {
  color: var(--info);
}

.alert-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-top: 0.2rem;
}

.alert-content p {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.alert-content span {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: block;
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* ===== DATA TABLE ===== */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.data-table th,
.data-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--border-dark);
}

.data-table tbody tr {
  transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
  background: var(--bg-secondary);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table td {
  font-variant-numeric: tabular-nums; /* Tabular numbers for clean alignments */
}

/* Badges (Flat Swiss Style) */
.badge-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.5rem;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.badge-tag.collected {
  background: #fee2e2;
  color: #991b1b;
}

.badge-tag.ephemeral {
  background: #dbeafe;
  color: #1e40af;
}

.badge-tag.voluntary {
  background: #d1fae5;
  color: #065f46;
}

/* ===== SECTION DIVIDERS ===== */
hr {
  border: 0;
  height: 1px;
  background: var(--border-color);
  margin: 3.5rem 0;
}

/* ===== FOOTER ===== */
footer {
  margin-top: auto;
  padding: 3rem 0;
  border-top: 1px solid var(--border-dark);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-link:hover {
  color: var(--accent);
}

.footer-dot {
  width: 4px;
  height: 4px;
  background: var(--text-dim);
}

/* ===== SCROLL REVEAL (Clean Swiss Fade) ===== */
.reveal, .reveal-stagger > * {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.reveal.visible, .reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* Simple Stagger Logic */
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.05s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.1s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.15s; }

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 40px;
  height: 40px;
  background: var(--text-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 50;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent);
}

/* ===== RESPONSIVE POLISH ===== */
@media (max-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }

  .choice-card {
    padding: 2rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .hero-section {
    padding: 3rem 0;
  }

  .trust-row {
    gap: 1.5rem;
  }

  footer {
    padding: 2rem 0;
  }

  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
  }
}