/* =========================================================
   EndWorks — Landing Page Styles
   Plain, document-like layout. No hero theatrics, no motion
   beyond what's needed for the mobile menu. Flat colour,
   sharp corners, hairline rules doing the work of hierarchy.

   Palette:  bg #120A1E / bg-alt #170D26 / border #2E2045
             text #EDE9F5 / text-dim #9C8FB5
             accent #7C5CD6 (used only for links)
   Type:     IBM Plex Sans (text) / IBM Plex Mono (labels, nav, buttons)
   ========================================================= */

:root {
  --bg: #120a1e;
  --bg-alt: #170d26;
  --border: #2e2045;

  --text: #ede9f5;
  --text-dim: #9c8fb5;
  --text-faint: #6a5d84;

  --accent: #7c5cd6;

  --font-text: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --max-width: 660px;
  --edge-padding: 24px;

  --transition: 120ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
  }
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px var(--edge-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
}

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  transition: color var(--transition);
}

.main-nav a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 30px;
  height: 30px;
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 14px;
  height: 1px;
  margin: 0 auto;
  background-color: var(--text-dim);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* ---------- Intro (plain, not a "hero") ---------- */
.intro {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px var(--edge-padding) 48px;
  border-bottom: 1px solid var(--border);
}

.intro h1 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: 0.01em;
  margin-bottom: 18px;
  color: var(--text);
}

.intro p {
  max-width: 520px;
  font-size: 16px;
  color: var(--text-dim);
}

/* ---------- Sections ---------- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px var(--edge-padding);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.section p {
  max-width: 520px;
  font-size: 16px;
  color: var(--text-dim);
}

/* ---------- Buttons (plain text link with a border, not a CTA block) ---------- */
.btn {
  display: inline-block;
  margin-top: 18px;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  border: 1px solid var(--border);
  transition: border-color var(--transition), color var(--transition);
}

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

/* ---------- Footer ---------- */
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px var(--edge-padding);
}

.site-footer p {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .main-nav.is-open {
    max-height: 220px;
  }

  .main-nav a {
    padding: 14px var(--edge-padding);
    border-top: 1px solid var(--border);
  }

  .nav-toggle {
    display: flex;
  }

  .site-header {
    position: relative;
  }

  .intro {
    padding: 40px var(--edge-padding) 32px;
  }

  .section {
    padding: 32px var(--edge-padding);
  }
}