/* Clarity Protocol - Dark Industrial Clinical Aesthetic */

:root {
  /* Dark-only color scheme */
  color-scheme: dark;

  /* Surface hierarchy - deep black base */
  --surface-0: #08080c;
  --surface-1: #0f0f14;
  --surface-2: #161620;
  --surface-3: #1e1e2a;

  /* Accent spectrum - cyan/teal */
  --accent-primary: #00d4ff;
  --accent-secondary: #0099cc;
  --accent-glow: rgba(0, 212, 255, 0.15);

  /* Legacy accent mapping */
  --accent: var(--accent-primary);
  --accent-hover: var(--accent-secondary);

  /* Text hierarchy */
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-tertiary: #606070;

  /* Borders */
  --border: #1a1a24;
  --border-subtle: #12121a;

  /* Typography - JetBrains Mono throughout */
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Consolas', monospace;
  --font-sans: 'JetBrains Mono', 'SF Mono', monospace;

  /* Confidence colors */
  --confidence-high: #00d4aa;
  --confidence-medium: #d4a800;
  --confidence-low: #ff4466;
}

/* Base reset and box model */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Body and typography */
body {
  background: var(--surface-0);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Container for content width */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 2.5rem;
  }
}

/* Header and navigation */
header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(8, 8, 12, 0.85);
}

/* Navigation - New Industrial Design */
.nav-main {
  width: 100%;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 56px;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  display: flex;
  gap: 0.35rem;
  transition: opacity 0.15s ease;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo__text {
  color: var(--text-primary);
}

.nav-logo__accent {
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-links li {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.15s ease;
  position: relative;
}

@media (min-width: 768px) {
  .nav-link {
    padding: 0.5rem 1rem;
    font-size: 14px;
  }
}

.nav-link__number {
  color: var(--text-tertiary);
  margin-right: 0.25rem;
  font-size: 0.75em;
}

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

.nav-link:hover .nav-link__number {
  color: var(--text-secondary);
}

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

.nav-link.active .nav-link__number {
  color: var(--accent-secondary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--accent-primary);
}

/* Main content area */
main {
  padding: 6rem 0 3rem 0;
  min-height: calc(100vh - 200px);
}

@media (min-width: 768px) {
  main {
    padding: 7rem 0 4rem 0;
  }
}

/* Footer */
footer {
  background: var(--surface-0);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

footer .container {
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
  letter-spacing: -0.003em;
}

/* Typography hierarchy */
h1, h2, h3 {
  font-family: var(--font-mono);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
  margin-top: 3rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h2 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.015em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  max-width: 75ch;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
  letter-spacing: -0.003em;
}

code {
  background: var(--surface-2);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  border: 1px solid var(--border);
}

/* Utility classes */
.text-mono {
  font-family: var(--font-mono);
  letter-spacing: 0;
}

.text-muted {
  color: var(--text-tertiary);
}

/* ========================================
   Component Styles - Section Numbering
   ======================================== */

.section-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-right: 0.75rem;
  letter-spacing: 0.05em;
}

/* ========================================
   Component Styles - Beveled Cards
   ======================================== */

.card-beveled {
  background: var(--surface-2);
  border: 1px solid var(--border);
  clip-path: polygon(0 8px, 8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.card-beveled:hover {
  background: var(--surface-3);
  box-shadow: inset 0 0 0 1px var(--accent-primary);
}

/* ========================================
   Component Styles - Buttons
   ======================================== */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-primary);
  color: var(--surface-0);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-ghost:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}