:root {
  --bg-canvas: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-surface-alt: #e2e8f0;
  --text-primary: #1e293b;
  --text-muted: #64748b;
  --accent-primary: #a65d08;
  --accent-hover: #8c4e06;
  --accent-light: #fef3c7;
  --border-subtle: #cbd5e1;
  --wa-green: #25d366;
  --wa-green-hover: #1ebd5a;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --radius: 4px;
  --shadow-soft: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
  --shadow-lift: 0 10px 25px -4px rgba(15, 23, 42, 0.12);
  --transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Header & Navigation */
.site-header {
  position: relative;
  width: 100%;
  padding: 1.25rem 2rem;
  background-color: transparent;
  transition: background-color var(--transition);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
}

.site-header.scrolled {
  background-color: var(--bg-canvas);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-primary);
  border-radius: 50%;
  display: inline-block;
}

.desktop-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.desktop-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  transition: color var(--transition);
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--accent-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
}

.mobile-nav-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lift);
  padding: 1.5rem;
}

.mobile-nav-panel.open {
  display: block;
}

.mobile-nav-panel ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-panel a {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  text-decoration: none;
}

/* Base Layout & Sections */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.content-narrow {
  max-width: 72ch;
  margin: 0 auto;
}

section {
  padding: 4.5rem 0;
}

.section-pale {
  background-color: var(--bg-surface);
  clip-path: polygon(0 2vw, 100% 0, 100% calc(100% - 2vw), 0 100%);
  padding: 5.5rem 0;
}

.section-pale-flat {
  background-color: var(--bg-surface);
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  display: inline-block;
}

/* Buttons */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  background: transparent;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}

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

.btn-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  border: 1px solid var(--accent-primary);
  background-color: var(--accent-primary);
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-solid:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.bento-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.bento-card.col-12 { grid-column: span 12; }
.bento-card.col-8 { grid-column: span 8; }
.bento-card.col-7 { grid-column: span 7; }
.bento-card.col-6 { grid-column: span 6; }
.bento-card.col-5 { grid-column: span 5; }
.bento-card.col-4 { grid-column: span 4; }

.bento-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  filter: contrast(110%) grayscale(25%);
}

.bento-media-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: center;
}

/* Scenario & Comparison Components */
.decision-scenario {
  border-left: 3px solid var(--accent-primary);
  padding: 1.25rem 1.5rem;
  background: #ffffff;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

.frame-box {
  background: #ffffff;
  padding: 1.75rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.frame-box .metric {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

/* Evidence notes & tags */
.evidence-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  background: var(--bg-surface-alt);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.evidence-badge.high {
  background: #dcfce7;
  color: #166534;
}

.evidence-badge.medium {
  background: #fef3c7;
  color: #92400e;
}

.evidence-badge.open {
  background: #fee2e2;
  color: #991b1b;
}

/* Table styles */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-surface);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background-color: #ffffff;
  color: var(--text-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
}

.form-feedback {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  display: none;
}

.form-feedback.success {
  display: block;
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-feedback.error {
  display: block;
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* Floating WhatsApp Button */
.wa-float-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  background-color: var(--wa-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
  z-index: 999;
  text-decoration: none;
}

.wa-float-btn:hover {
  background-color: var(--wa-green-hover);
  transform: scale(1.08);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.wa-float-btn svg {
  width: 32px;
  height: 32px;
  fill: #ffffff;
}

/* Footer */
.site-footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 4rem 0 2rem;
  border-top: 1px solid #1e293b;
}

.site-footer a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer a:hover {
  color: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: #f8fafc;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.9rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1e293b;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
  .bento-card.col-8,
  .bento-card.col-7,
  .bento-card.col-6,
  .bento-card.col-5,
  .bento-card.col-4 {
    grid-column: span 12;
  }
  .bento-media-split,
  .comparison-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}