/* iphy Landing — Design tokens and component styles
   Source: styleguide-complete.md */

/* === DESIGN TOKENS === */
:root {
  /* Backgrounds */
  --bg-void: #0A0A0A;
  --bg-surface: #171717;
  --bg-blanc: #EDF0F5;

  /* Borders */
  --border-grid: #262626;
  --border-active: #404040;

  /* Text */
  --text-primary: #EDF0F5;
  --text-secondary: #A3A3A3;
  --text-muted: #737373;
  --text-silenced: #262626;

  /* Signature */
  --signal-iphy: #C8FFC3;
  --signal-growth: #F5FF6D;

  /* Typography */
  --font-ui: 'Inter', sans-serif;
  --font-data: 'IBM Plex Mono', monospace;
  --font-wisdom: 'Newsreader', serif;
  --tracking-tight: -0.025em;
  --tracking-wordmark: -0.04em;

  /* Shape */
  --radius-card: 8px;
  --radius-container: 12px;

  /* Layout */
  --page-max: 1000px;
  --gap-breathing: 8px;
}

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

html {
  -webkit-tap-highlight-color: transparent;
}

@media print {
  html, body { display: none !important; }
}

body {
  font-family: var(--font-ui);
  background: var(--bg-void);
  background-image: radial-gradient(rgba(38, 38, 38, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

body.landing-page {
  padding-top: 64px;
  padding-bottom: 56px;
  overflow: hidden;
}

/* === HEADER === */
.header-wrapper {
  border-bottom: 1px solid var(--border-grid);
  background: var(--bg-void);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  max-width: var(--page-max);
  margin: 0 auto;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 16px;
  height: 16px;
  display: block;
}

.wordmark {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  text-decoration: none;
  text-transform: lowercase;
}

.wordmark:hover {
  color: var(--text-secondary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.github-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  font-family: var(--font-data);
  font-size: 10px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--bg-void);
  border: 1px solid var(--border-grid);
  border-radius: 8px;
  cursor: default;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.github-btn:hover {
  border-color: var(--border-active);
}

.github-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.login-btn {
  padding: 6px 14px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-void);
  border: 1px solid var(--border-grid);
  border-radius: 8px;
  cursor: default;
}

.login-btn:hover {
  border-color: var(--border-active);
}

/* === HERO === */
.hero {
  text-align: center;
  padding: 78px 24px 84px;
  position: relative;
  overflow: visible;
  max-width: 980px;
  margin: 0 auto;
}

.hero-label {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 34px;
}

.hero h1 {
  font-family: var(--font-ui);
  font-size: clamp(30px, 4.5vw, 46px);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  line-height: 1.15;
  margin-bottom: 26px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.hero h1 .accent {
  color: var(--text-primary);
  opacity: 1;
}

.hero p {
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  margin-top: 0;
  line-height: 1.6;
}

/* === CARDS === */
.cards-section {
  padding: 0 24px 8px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
  align-items: stretch;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-grid);
  border-radius: var(--radius-card);
  padding: 24px;
  text-align: left;
  transition: border-color 200ms ease;
}

.card:hover {
  border-color: var(--border-active);
}

.card-title {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-title::before {
  content: "/";
  font-family: var(--font-data);
  color: var(--signal-iphy);
}

.card-text {
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === FOOTER === */
footer {
  padding: 13px 24px;
  border-top: 1px solid var(--border-grid);
  background: var(--bg-void);
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  max-width: var(--page-max);
  margin: 0 auto;
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--text-muted);
}

.footer-mono {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.footer-mono .bracket {
  color: var(--signal-iphy);
}

.footer-tagline {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--text-muted);
  flex: 1 1 40%;
  text-align: left;
  line-height: 1.4;
}

.footer-disclaimer {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--text-muted);
  opacity: 1;
  text-align: right;
  flex: 1;
  line-height: 1.4;
}

.footer-link {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--text-muted);
  text-decoration: none;
  text-align: center;
  flex-shrink: 0;
}

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

/* === LEGAL PAGE === */
.content {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.content h1 {
  font-family: var(--font-ui);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
  margin-bottom: 24px;
}

.content .intro {
  font-family: var(--font-wisdom);
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.content .section {
  margin-bottom: 32px;
}

.content .section-title {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.content .section-text {
  font-family: var(--font-wisdom);
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.75;
}

.content .section-text a {
  color: var(--signal-iphy);
  text-decoration: none;
}

.content .section-text a:hover {
  text-decoration: underline;
}

.content h1 + .intro {
  margin-top: 0;
}

.content h1[style*="margin-top"] {
  margin-top: 64px;
}

/* === F12 EASTER EGG (hidden block for View Source / Inspector) === */
.dev-note {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
  pointer-events: none;
  user-select: text;
}

.dev-note-content {
  position: static;
  left: auto;
  width: 80ch;
  max-width: 100%;
  height: auto;
  overflow: visible;
  clip: auto;
  clip-path: none;
  white-space: pre-wrap;
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 1.5;
  color: var(--text-muted);
  padding: 16px;
  margin: 0;
  border: 1px solid var(--border-grid);
  border-radius: var(--radius-card);
  background: var(--bg-surface);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  header {
    padding: 14px 20px;
  }

  .hero {
    padding: 48px 20px 48px;
  }

  .hero h1 {
    font-size: 26px;
  }

  .hero p {
    font-size: 14px;
  }

  .cards-section {
    padding: 0 20px 16px;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .card {
    padding: 24px 20px;
  }

  .footer-inner {
    gap: 10px;
  }

  .content {
    padding: 40px 20px 60px;
  }

  .content h1 {
    font-size: 20px;
  }
}