/* PatternSpace — shared styles across all pages */

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

:root {
  --bg: oklch(11% 0.012 260);
  --bg2: oklch(14% 0.014 260);
  --bg3: oklch(17% 0.016 260);
  --border: oklch(28% 0.016 260);
  --text: oklch(94% 0.006 260);
  --text2: oklch(62% 0.01 260);
  --text3: oklch(42% 0.01 260);
  --accent: oklch(72% 0.18 260);
  --red: oklch(68% 0.18 25);
  --yellow: oklch(82% 0.16 95);
  --mono: "DM Mono", monospace;
  --sans: "DM Sans", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 60px;
  background: oklch(11% 0.012 260 / 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.nav-brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}
.nav-brand span {
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  background: var(--accent);
  color: oklch(10% 0.02 260);
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition:
    opacity 0.2s,
    transform 0.15s;
  flex-shrink: 0;
}
.nav-cta:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

/* Hamburger button — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: background 0.15s;
}
.nav-toggle:hover {
  background: oklch(100% 0 0 / 0.06);
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--text2);
  border-radius: 2px;
  transition:
    transform 0.25s,
    opacity 0.2s,
    width 0.2s;
  transform-origin: center;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── PAGE SHELL ── */
.page-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 100px 24px 80px;
}

.page-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.page-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 300;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 8px;
}
.page-title strong {
  font-weight: 600;
}

.page-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

/* ── PROSE ── */
.prose {
  color: var(--text2);
  font-weight: 300;
  line-height: 1.8;
}
.prose h2 {
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 40px 0 12px;
}
.prose h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin: 24px 0 8px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.prose p {
  margin-bottom: 16px;
  font-size: 15px;
}
.prose ul,
.prose ol {
  padding-left: 20px;
  margin-bottom: 16px;
}
.prose li {
  font-size: 15px;
  margin-bottom: 6px;
}
.prose a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid oklch(72% 0.18 260 / 0.3);
  transition: border-color 0.2s;
}
.prose a:hover {
  border-color: var(--accent);
}
.prose strong {
  color: var(--text);
  font-weight: 500;
}
.prose code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg3);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent);
}
.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 36px 0;
}

/* ── FOOTER ── */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand img {
  width: 22px;
  height: 22px;
  border-radius: 5px;
}
.footer-brand span {
  font-size: 13px;
  color: var(--text2);
}
.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 12px;
  color: var(--text3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--text2);
}
.footer-copy {
  font-size: 12px;
  color: var(--text3);
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: oklch(10% 0.02 260);
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
  transition:
    opacity 0.2s,
    transform 0.15s;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ── FORM ── */
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  margin-bottom: 7px;
  letter-spacing: -0.01em;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--sans);
  color: var(--text);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px oklch(72% 0.18 260 / 0.12);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text3);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}
.form-select option {
  background: var(--bg2);
}
.form-hint {
  font-size: 12px;
  color: var(--text3);
  margin-top: 5px;
}

.form-success {
  display: none;
  background: oklch(72% 0.18 260 / 0.08);
  border: 1px solid oklch(72% 0.18 260 / 0.25);
  border-radius: 10px;
  padding: 20px 24px;
  color: var(--accent);
  font-size: 14px;
  margin-top: 24px;
}

/* ── RESPONSIVE ── */

/* Tablet */
@media (max-width: 860px) {
  nav {
    padding: 0 24px;
  }

  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }

  /* Mobile nav drawer */
  .nav-drawer {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: oklch(11% 0.012 260 / 0.97);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    display: none;
    flex-direction: column;
    gap: 4px;
    z-index: 99;
  }
  .nav-drawer.open {
    display: flex;
  }
  .nav-drawer a {
    color: var(--text2);
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    padding: 12px 8px;
    border-bottom: 1px solid var(--border);
    transition: color 0.15s;
  }
  .nav-drawer a:last-child {
    border-bottom: none;
  }
  .nav-drawer a:hover,
  .nav-drawer a.active {
    color: var(--text);
  }
  .nav-drawer .nav-drawer-cta {
    margin-top: 12px;
    display: block;
    text-align: center;
    background: var(--accent);
    color: oklch(10% 0.02 260);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    border-bottom: none;
  }

  .page-wrap {
    padding: 88px 20px 60px;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 20px;
  }
  .footer-links {
    gap: 16px;
  }
}

/* Mobile */
@media (max-width: 540px) {
  .page-wrap {
    padding: 80px 16px 48px;
  }

  footer {
    padding: 28px 16px;
  }
  .footer-links {
    gap: 12px;
    flex-wrap: wrap;
  }
}