/* landing/styles.css — Гипотенуза landing page styles
   Depends on: brandbook/brand-tokens.css (loaded via <link> in index.html)
   Palette mode: DARK (primary — void/bone/signal-green)
   No hardcoded HEX. All colors via CSS tokens. */

/* ---- Google Fonts — IBM Plex family -------------------------------- */
@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Sans+Condensed:wght@500;700&display=swap&subset=cyrillic,cyrillic-ext,latin,latin-ext");


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

/* ---- Page layout ------------------------------------------------------- */
body {
  min-height: 100dvh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  font-feature-settings: var(--font-features);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* ---- Screen layout: full-viewport single screen ----------------------- */
.screen {
  width: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-12) var(--space-8);
}

/* ---- Header / wordmark ------------------------------------------------- */
.site-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-h3);
  color: var(--color-heading);
  letter-spacing: -0.035em;
  line-height: 1;
  font-feature-settings: var(--font-features);
}

/* Phosphor dot — animated, uses keyframe from brand-tokens.css */
.wordmark-dot {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--color-signal);
  margin-left: 0.2em;
  vertical-align: middle;
  /* .phosphor class from brand-tokens.css adds phosphor-pulse animation */
}


/* ---- Main content ------------------------------------------------------ */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  max-width: 44rem;
}

/* Label above headline — small caps mono */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-signal);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

/* Main headline */
.headline {
  font-family: var(--font-display);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-h1);
  color: var(--color-heading);
  letter-spacing: var(--tracking-h1);
  line-height: var(--leading-h1);
  margin-bottom: var(--space-6);
}

/* Subline — facts */
.subline {
  font-family: var(--font-mono);
  font-size: var(--text-mono-lg);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-mono);
  line-height: var(--leading-body);
  margin-bottom: var(--space-4);
}

/* Tagline */
.tagline {
  font-size: var(--text-body);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
}

/* ---- CTA button -------------------------------------------------------- */
.cta-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: var(--color-cta);
  color: var(--color-cta-text);
  font-family: var(--font-display);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-body);
  letter-spacing: var(--tracking-normal);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-none);
  cursor: pointer;
  /* signal glow */
  box-shadow: var(--glow-signal-md);
  transition:
    background var(--motion-duration-fast) var(--motion-ease-out),
    box-shadow  var(--motion-duration-fast) var(--motion-ease-out);
}

.cta-btn:hover {
  background: var(--color-cta-hover);
  box-shadow: var(--glow-signal-lg);
}

.cta-btn:focus-visible {
  outline: var(--border-focus);
  outline-offset: 2px;
  box-shadow: var(--glow-focus);
}

.cta-btn:active {
  background: var(--color-cta-hover);
  box-shadow: var(--glow-signal-sm);
}

/* Telegram icon inside button */
.cta-btn svg {
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
  fill: currentColor;
}


/* ---- Divider ----------------------------------------------------------- */
.divider {
  width: 100%;
  border: none;
  border-top: var(--border-hairline);
  margin: 0;
}


/* ---- Footer ------------------------------------------------------------ */
.site-footer {
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  color: var(--color-text-ghost);
  letter-spacing: var(--tracking-mono);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--text-mono-sm);
  color: var(--color-text-ghost);
  letter-spacing: var(--tracking-mono);
}


/* ---- Responsive ------------------------------------------------------- */
@media (max-width: 640px) {
  .screen {
    padding: var(--space-8) var(--space-6);
  }

  .headline {
    font-size: var(--text-h2);
    letter-spacing: var(--tracking-h2);
  }

  .main-content {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

@media (max-width: 400px) {
  .screen {
    padding: var(--space-6) var(--space-4);
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
  }

  .cta-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}