/* =============================================================================
   site.css — shared design system for every page
   ============================================================================= */

/* ---------- Fonts ---------- */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght,SOFT@9..144,300..700,30..100&family=Hanken+Grotesk:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap");

/* ---------- Design tokens ---------- */
:root {
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-body:    "Hanken Grotesk", -apple-system, "Helvetica Neue", sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --max-w:        1360px;
  --gutter:       clamp(1.25rem, 4vw, 3rem);
  --radius-s:     6px;
  --radius-m:     12px;
  --radius-l:     20px;
  --radius-xl:    28px;

  --t-fast:       240ms;
  --t-base:       380ms;
  --t-slow:       640ms;
  --t-glacial:    1200ms;
  --ease:         cubic-bezier(.2,.7,.2,1);
  --ease-elastic: cubic-bezier(.34,1.4,.5,1);
}

/* ---------- Dark: warm ink, champagne + terracotta + moss ---------- */
[data-theme="dark"] {
  --bg:            #0E0D0B;
  --bg-2:          #14120F;
  --surface:       #1A1815;
  --surface-2:     #221F1B;
  --surface-hi:    #2C2823;
  --text:          #F5EFE5;
  --text-2:        #CCC2B0;
  --text-muted:    #8E8474;
  --line:          rgba(245, 239, 229, 0.08);
  --line-strong:   rgba(245, 239, 229, 0.18);
  --accent:        #D4A574;            /* champagne */
  --accent-2:      #C97A6E;            /* terracotta */
  --accent-3:      #7BA08F;            /* moss */
  --accent-soft:   rgba(212, 165, 116, 0.15);
  --accent-2-soft: rgba(201, 122, 110, 0.15);
  --accent-ink:    #0E0D0B;

  --atmo-1: radial-gradient(70vw 60vh at 12% 18%, rgba(212,165,116,.10), transparent 60%);
  --atmo-2: radial-gradient(60vw 50vh at 88% 82%, rgba(123,160,143,.08), transparent 60%);
  --atmo-3: radial-gradient(50vw 40vh at 60% 40%, rgba(201,122,110,.05), transparent 65%);

  --grain-opacity: 0.06;
  --grain-blend:   overlay;

  --shadow-1: 0 1px 2px rgba(0,0,0,.22), 0 1px 3px rgba(0,0,0,.16);
  --shadow-2: 0 6px 14px rgba(0,0,0,.30), 0 12px 30px rgba(0,0,0,.22);
  --shadow-3: 0 14px 40px rgba(0,0,0,.40), 0 28px 80px rgba(0,0,0,.30);
  --glow:     0 0 0 1px rgba(212,165,116,.20), 0 12px 40px rgba(212,165,116,.10);
}

/* ---------- Light: warm paper, deep ink, the same accents recoloured ---------- */
[data-theme="light"] {
  --bg:            #F4EFE5;
  --bg-2:          #EDE6D9;
  --surface:       #FBF7EE;
  --surface-2:     #F0E9DA;
  --surface-hi:    #E5DCC9;
  --text:          #1C1813;
  --text-2:        #3F372C;
  --text-muted:    #6A5F4D;
  --line:          rgba(28, 24, 19, 0.10);
  --line-strong:   rgba(28, 24, 19, 0.24);
  --accent:        #7A4F1F;            /* burnt umber */
  --accent-2:      #9A4530;            /* deep terracotta */
  --accent-3:      #3F6657;            /* deep moss */
  --accent-soft:   rgba(122, 79, 31, 0.10);
  --accent-2-soft: rgba(154, 69, 48, 0.10);
  --accent-ink:    #FBF7EE;

  --atmo-1: radial-gradient(70vw 60vh at 10% 12%, rgba(122,79,31,.07), transparent 60%);
  --atmo-2: radial-gradient(60vw 50vh at 90% 78%, rgba(63,102,87,.06), transparent 60%);
  --atmo-3: radial-gradient(55vw 40vh at 50% 50%, rgba(154,69,48,.04), transparent 65%);

  --grain-opacity: 0.04;
  --grain-blend:   multiply;

  --shadow-1: 0 1px 2px rgba(28,24,19,.05), 0 1px 3px rgba(28,24,19,.04);
  --shadow-2: 0 6px 14px rgba(28,24,19,.07), 0 12px 30px rgba(28,24,19,.06);
  --shadow-3: 0 14px 40px rgba(28,24,19,.12), 0 28px 70px rgba(28,24,19,.08);
  --glow:     0 0 0 1px rgba(122,79,31,.20), 0 12px 40px rgba(122,79,31,.10);
}

/* =============================================================================
   Reset + base
   ============================================================================= */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 88px;
}
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--t-slow) var(--ease), color var(--t-slow) var(--ease);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

img, svg, video, iframe { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0;
}
p { margin: 0; }

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

/* =============================================================================
   Atmosphere — drifting radial gradients that change with theme
   ============================================================================= */
body::before {
  content: "";
  position: fixed;
  inset: -15%;
  z-index: -2;
  background-image: var(--atmo-1), var(--atmo-2), var(--atmo-3);
  background-repeat: no-repeat;
  animation: drift 38s ease-in-out infinite alternate;
  transition: background-image var(--t-slow) var(--ease);
  pointer-events: none;
}
@keyframes drift {
  0%   { transform: translate(0,0) rotate(0deg) scale(1);   }
  50%  { transform: translate(2%, -1.5%) rotate(2deg) scale(1.04); }
  100% { transform: translate(-1.5%, 2%) rotate(-2deg) scale(1.02); }
}

/* Film grain over everything */
.grain-overlay {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: var(--grain-opacity);
  mix-blend-mode: var(--grain-blend);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* =============================================================================
   Layout utilities
   ============================================================================= */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.mono  { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }

/* =============================================================================
   Header (Web Component renders into this markup)
   ============================================================================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  background: color-mix(in srgb, var(--bg) 76%, transparent);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}
.site-header__row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.05rem var(--gutter);
  gap: 1.25rem;
  max-width: var(--max-w); margin: 0 auto;
}

.brand { display: flex; align-items: center; gap: .8rem; }
.brand__logo {
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--accent);
  display: grid; place-items: center;
  color: var(--accent-ink);
  font-family: var(--font-display);
  font-weight: 600; font-size: 20px;
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-elastic), background-color var(--t-base) var(--ease);
}
.brand:hover .brand__logo { transform: rotate(-6deg) scale(1.05); }
.brand__logo img, .brand__logo svg { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
.brand__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  font-weight: 500;
  color: var(--text);
}
.brand__name em {
  font-style: italic; font-weight: 400;
  color: var(--text-muted);
  margin-left: .15em;
}

.site-nav { display: flex; align-items: center; gap: 1.85rem; }
.nav-link {
  position: relative;
  font-size: .92rem;
  color: var(--text-2);
  padding: .35rem 0;
  transition: color var(--t-fast) var(--ease);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--t-base) var(--ease);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: .35rem; }
.icon-btn {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 999px;
  color: var(--text-2);
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.icon-btn:active { transform: scale(.94); }
.icon-btn svg { width: 18px; height: 18px; }

/* Theme toggle: swap the icon by rotating into view */
.theme-toggle .icon-stack {
  position: relative; width: 18px; height: 18px;
  display: grid; place-items: center;
}
.theme-toggle svg {
  position: absolute; inset: 0; margin: auto;
  transition: transform var(--t-slow) var(--ease-elastic), opacity var(--t-base) var(--ease);
}
[data-theme="dark"] .theme-toggle .icon-sun  { opacity: 0; transform: rotate(-90deg) scale(.4); }
[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0)   scale(1); }
[data-theme="light"] .theme-toggle .icon-sun  { opacity: 1; transform: rotate(0)   scale(1); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg)  scale(.4); }

.menu-toggle { display: none; }

/* Mobile */
@media (max-width: 760px) {
  .site-nav {
    position: fixed; inset: 68px 0 0 0;
    flex-direction: column; align-items: flex-start;
    padding: 2rem var(--gutter);
    gap: 1.1rem;
    background: var(--bg);
    border-top: 1px solid var(--line);
    transform: translateY(-110%);
    transition: transform var(--t-base) var(--ease);
    z-index: 90;
  }
  .site-nav.is-open { transform: translateY(0); }
  .site-nav .nav-link { font-size: 1.35rem; font-family: var(--font-display); }
  .menu-toggle { display: grid; }
}

/* =============================================================================
   Footer
   ============================================================================= */
.site-footer {
  margin-top: 5rem;
  padding: 5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50vw 30vh at 50% 0%, var(--accent-soft), transparent 70%);
  pointer-events: none;
  opacity: .6;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
  position: relative;
}
@media (max-width: 820px) { .site-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .site-footer__grid { grid-template-columns: 1fr; } }

.site-footer__brand { max-width: 34rem; }
.site-footer__brand .brand { margin-bottom: 1.25rem; }
.site-footer__blurb { color: var(--text-muted); font-size: .95rem; line-height: 1.65; }

.site-footer__col h5 {
  font-family: var(--font-mono); font-size: .7rem;
  text-transform: uppercase; letter-spacing: .14em;
  color: var(--text-muted); font-weight: 500;
  margin: 0 0 1rem;
}
.site-footer__col a {
  display: block; padding: .35rem 0;
  color: var(--text-2); font-size: .96rem;
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}
.site-footer__col a:hover { color: var(--accent); padding-left: .35rem; }

.site-footer__rule {
  margin-top: 4rem; padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  color: var(--text-muted); font-size: .82rem;
  position: relative;
}

/* =============================================================================
   Reveal on scroll
   ============================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--t-glacial) var(--ease), transform var(--t-glacial) var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* Stagger reveals — set --d via inline style or :nth-child */
.reveal[style*="--d"] { transition-delay: var(--d); }

/* =============================================================================
   Buttons
   ============================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .8rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: .95rem; font-weight: 500;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: var(--shadow-1);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease), background-color var(--t-base) var(--ease);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); }
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}
.btn--ghost:hover { box-shadow: inset 0 0 0 1px var(--text); background: var(--surface-2); }
.btn svg { width: 14px; height: 14px; }

/* =============================================================================
   Cursor halo — subtle glow that follows the pointer (hover-capable only).
   Auto-injected into every page by site.js.
   ============================================================================= */
.cursor-halo {
  position: fixed;
  left: 0; top: 0;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 65%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 600ms var(--ease);
  z-index: -1;
}
[data-theme="light"] .cursor-halo { mix-blend-mode: multiply; }
@media (hover: hover) and (pointer: fine) {
  .cursor-halo { opacity: 1; }
}

/* =============================================================================
   Reduced motion
   ============================================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
  body::before { animation: none; }
}