/* ============================================================
   Dromlight — design system
   ============================================================ */

:root {
  /* Palette — warm dark */
  --bg:            #0E0C08;
  --bg-elev:       #16130D;
  --bg-card:       #1B1711;
  --fg:            #F5EFE4;
  --fg-muted:      #A29786;
  --fg-subtle:     #6B6357;
  --accent:        #C89B3F;
  --accent-hover:  #E0B85E;
  --border:        rgba(245, 239, 228, 0.08);
  --border-strong: rgba(245, 239, 228, 0.16);

  /* Type scale */
  --font-display: 'Fraunces', ui-serif, Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  /* Layout */
  --content-max: 1200px;
  --prose-max:   720px;
  --gutter:      clamp(20px, 4vw, 48px);
}

/* ============================================================
   Reset & base
   ============================================================ */

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

html {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a {
  color: var(--fg);
  text-decoration: none;
  transition: color 160ms ease;
}
a:hover { color: var(--accent); }

::selection { background: var(--accent); color: var(--bg); }

/* ============================================================
   Typography
   ============================================================ */

.display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.02;
  font-variation-settings: "opsz" 144, "SOFT" 30;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 0.5em;
  font-variation-settings: "opsz" 100, "SOFT" 30;
}

h1 { font-size: clamp(48px, 8.5vw, 92px); line-height: 1.02; letter-spacing: -0.03em; }
h2 { font-size: clamp(36px, 5vw, 56px); line-height: 1.08; }
h3 { font-size: clamp(24px, 3vw, 32px); line-height: 1.15; }
h4 { font-size: 20px; line-height: 1.2; }

p { margin: 0 0 1.2em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px;
}

.lede {
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.5;
  color: var(--fg-muted);
  max-width: 620px;
}

.small {
  font-size: 14px;
  color: var(--fg-muted);
}

/* ============================================================
   Layout primitives
   ============================================================ */

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left:  var(--gutter);
  padding-right: var(--gutter);
}

.prose {
  max-width: var(--prose-max);
  margin: 0 auto;
}

.prose p { font-size: 18px; line-height: 1.75; color: var(--fg); }
.prose p + p { margin-top: 1.4em; }

.section {
  padding-top:    clamp(80px, 12vw, 160px);
  padding-bottom: clamp(80px, 12vw, 160px);
  position: relative;
}

.section--tight { padding-top: clamp(60px, 8vw, 100px); padding-bottom: clamp(60px, 8vw, 100px); }

.section--elev { background: var(--bg-elev); }

.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ============================================================
   Nav
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 12, 8, 0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav__brand svg { width: 22px; height: 22px; }

.nav__links {
  display: flex;
  gap: 32px;
  align-items: center;
  font-size: 15px;
  color: var(--fg-muted);
}

.nav__links a {
  color: var(--fg-muted);
  position: relative;
  padding: 4px 0;
}

.nav__links a:hover,
.nav__links a[aria-current="page"] { color: var(--fg); }

.nav__links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
}

@media (max-width: 640px) {
  .nav__links { gap: 20px; font-size: 14px; }
  .nav__links a.nav__hide-sm { display: none; }
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding-top:    clamp(80px, 14vw, 180px);
  padding-bottom: clamp(80px, 12vw, 160px);
  position: relative;
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1200px 500px at 80% -10%, rgba(200, 155, 63, 0.06), transparent 60%),
    radial-gradient(800px 400px at 10% 90%, rgba(200, 155, 63, 0.03), transparent 60%);
  pointer-events: none;
}

.hero__content { position: relative; }

.hero h1 { margin-bottom: 32px; }

.hero__lede {
  font-size: clamp(20px, 2.5vw, 26px);
  line-height: 1.45;
  color: var(--fg-muted);
  max-width: 640px;
  margin-bottom: 48px;
}

.hero em, .hero__accent { color: var(--accent); font-style: normal; }

.hero__cta { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 24px;
  border-radius: 2px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 180ms ease;
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--bg);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn__arrow {
  transition: transform 180ms ease;
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ============================================================
   Cards / grids
   ============================================================ */

.grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 900px) {
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
}

.card {
  padding: clamp(28px, 3.5vw, 40px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 220ms ease, transform 220ms ease;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 18px;
  display: block;
}

.card h3 { margin-bottom: 14px; }
.card p { color: var(--fg-muted); margin-bottom: 0; font-size: 16px; }

/* ============================================================
   Section headings
   ============================================================ */

.section-head { max-width: 720px; margin-bottom: clamp(48px, 6vw, 80px); }
.section-head .eyebrow { margin-bottom: 20px; }
.section-head h2 { margin-bottom: 24px; }
.section-head p { color: var(--fg-muted); font-size: 19px; line-height: 1.55; }

/* ============================================================
   Feature list (used on Studio page)
   ============================================================ */

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.feature-list li {
  background: var(--bg);
  padding: 32px clamp(24px, 3vw, 40px);
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  align-items: baseline;
}

@media (max-width: 720px) {
  .feature-list li { grid-template-columns: 1fr; gap: 8px; }
}

.feature-list h4 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  margin: 0;
  color: var(--fg);
}

.feature-list p {
  color: var(--fg-muted);
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
}

/* ============================================================
   Manifesto / large quote
   ============================================================ */

.manifesto {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.25;
  color: var(--fg);
  letter-spacing: -0.015em;
  max-width: 900px;
  font-variation-settings: "opsz" 120, "SOFT" 40;
}

.manifesto em { color: var(--accent); font-style: normal; }

/* ============================================================
   Two-column split
   ============================================================ */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ============================================================
   Signup panel
   ============================================================ */

.signup {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: clamp(40px, 6vw, 72px);
  text-align: center;
}
.signup h2 { margin-bottom: 20px; }
.signup p { color: var(--fg-muted); font-size: 18px; margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }

/* ============================================================
   Footer
   ============================================================ */

.footer {
  border-top: 1px solid var(--border);
  padding: 60px var(--gutter) 40px;
  background: var(--bg);
}

.footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}
@media (max-width: 720px) { .footer__inner { grid-template-columns: 1fr; text-align: left; } }

.footer__brand {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.footer__brand svg { width: 22px; height: 22px; }

.footer__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--fg-subtle);
  text-transform: uppercase;
  margin-top: 4px;
}

.footer__links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--fg-muted);
  flex-wrap: wrap;
}

.footer__meta {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding-top: 24px;
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--fg-subtle);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

@media (max-width: 720px) {
  .footer__meta { flex-direction: column; gap: 8px; }
}

/* ============================================================
   Utility
   ============================================================ */

.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.muted  { color: var(--fg-muted); }
.subtle { color: var(--fg-subtle); }
.center { text-align: center; }
.mb-0 { margin-bottom: 0; }

.hairline {
  display: inline-block;
  width: 40px;
  height: 1px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 14px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}