/* =========================================================
   Nitya & Aziz - base.css
   Global design system: tokens, type, layout, nav, footer
   ========================================================= */

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body { line-height: 1.6; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
ul { list-style: none; padding: 0; }

/* ---------- Tokens ---------- */
:root {
  /* Global frame, from the ceremony card */
  --ivory:       #FCF8EF;
  --cream:       #F3E8D2;
  --maroon:      #7E1C1C;
  --maroon-deep: #571010;
  --gold:        #BD9540;
  --gold-soft:   #E0C485;
  --ink:         #3A2C20;
  --ink-soft:    #7A6451;
  --line:        rgba(58, 44, 32, 0.16);

  /* Active scene theme (overridden per .scene via themes.css) */
  --bg-1:   #FCF8EF;
  --bg-2:   #F3E8D2;
  --accent: var(--maroon);
  --accent-2: var(--gold);
  --on:     var(--ink);
  --on-soft: var(--ink-soft);
  --card:   rgba(255, 255, 255, 0.55);
  --card-line: rgba(58, 44, 32, 0.14);
  --chip-bg: rgba(126, 28, 28, 0.10);

  /* Type */
  --display: "Cormorant Garamond", "Cormorant", Georgia, "Times New Roman", serif;
  --body:    "EB Garamond", Georgia, "Times New Roman", serif;

  /* Rhythm */
  --shell: min(1120px, 92vw);
  --read:  min(680px, 92vw);
  --nav-h: 64px;
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.2rem);
  color: var(--ink);
  background: var(--ivory);
  min-height: 100vh;
  overflow-x: hidden;
}
/* Lenis smooth-scroll hooks */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

/* ---------- Background sky (fixed, cross-fades between themes) ---------- */
.sky { position: fixed; inset: 0; z-index: -2; overflow: hidden; }
.sky__layer {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1100ms ease;
  background: radial-gradient(120% 90% at 50% 0%, var(--bg-2), var(--bg-1) 70%);
  will-change: opacity;
}
.sky__layer[data-active] { opacity: 1; }

.particles {
  position: fixed; inset: 0; z-index: -1;
  pointer-events: none;
  width: 100%; height: 100%;
}

/* ---------- Typography ---------- */
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.08; color: var(--accent); }
.label {
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.42em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-2);
  display: inline-block;
}
.italic { font-style: italic; }
.amp { font-family: var(--display); font-style: italic; color: var(--accent-2); font-weight: 500; }

/* Decorative divider */
.flourish {
  display: flex; align-items: center; justify-content: center; gap: 0.9rem;
  color: var(--accent-2); margin: 1.4rem 0;
}
.flourish::before, .flourish::after {
  content: ""; height: 1px; width: clamp(40px, 12vw, 120px);
  background: linear-gradient(90deg, transparent, var(--accent-2));
}
.flourish::after { background: linear-gradient(90deg, var(--accent-2), transparent); }
.flourish span { font-size: 1.1rem; }

/* ---------- Layout ---------- */
.shell { width: var(--shell); margin-inline: auto; }
.read  { width: var(--read);  margin-inline: auto; }
section { position: relative; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 2.2rem);
  background: color-mix(in srgb, var(--bg-1) 72%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent-2) 26%, transparent);
  transition: transform 420ms ease, background 600ms ease, border-color 600ms ease;
}
/* Blur lives on a pseudo-element so .nav itself doesn't become the
   containing block for the fixed full-screen mobile menu. */
.nav::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
}
.nav.is-hidden { transform: translateY(-105%); }
.nav__brand { display: flex; align-items: center; gap: 0.6rem; }
.nav__om { font-size: 1.4rem; color: var(--accent-2); line-height: 1; }
.nav__names {
  font-family: var(--display); font-size: 1.32rem; font-weight: 600;
  color: var(--accent); letter-spacing: 0.02em; white-space: nowrap;
}
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.6vw, 2.1rem); }
.nav__links a {
  font-family: var(--display); font-size: 1.06rem; color: var(--on);
  letter-spacing: 0.04em; position: relative; padding: 0.3rem 0; opacity: 0.92;
  transition: opacity 200ms ease;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1.5px;
  background: var(--accent-2); transition: right 280ms ease;
}
.nav__links a:hover { opacity: 1; }
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { right: 0; }

.nav__toggle { display: none; width: 42px; height: 42px; position: relative; }
.nav__toggle span {
  position: absolute; left: 9px; right: 9px; height: 1.6px; background: var(--accent);
  transition: transform 320ms ease, opacity 200ms ease; border-radius: 2px;
}
.nav__toggle span:nth-child(1) { top: 15px; }
.nav__toggle span:nth-child(2) { top: 21px; }
.nav__toggle span:nth-child(3) { top: 27px; }

/* ---------- Reveal animation states ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 900ms ease, transform 900ms cubic-bezier(.2,.65,.3,1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 120ms; }
.reveal[data-d="2"] { transition-delay: 240ms; }
.reveal[data-d="3"] { transition-delay: 360ms; }
.reveal[data-d="4"] { transition-delay: 480ms; }

/* ---------- Buttons / links ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--display); font-size: 1.05rem; letter-spacing: 0.06em;
  color: var(--on); padding: 0.7rem 1.5rem; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent-2) 60%, transparent);
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  transition: background 260ms ease, transform 260ms ease, border-color 260ms ease;
}
.btn:hover { background: color-mix(in srgb, var(--accent-2) 22%, transparent); transform: translateY(-2px); }
.btn__arrow { transition: transform 260ms ease; }
.btn:hover .btn__arrow { transform: translateX(4px); }

.linkrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--accent); border-bottom: 1px solid color-mix(in srgb, var(--accent-2) 50%, transparent);
  padding-bottom: 2px; transition: color 200ms ease, border-color 200ms ease;
}
.linkrow:hover { color: var(--accent-2); border-color: var(--accent-2); }

/* ---------- Footer ---------- */
.footer {
  position: relative; z-index: 1;
  text-align: center; padding: clamp(3.5rem, 8vw, 6rem) 1rem clamp(2.5rem, 6vw, 4rem);
  color: var(--on);
}
.footer--banner {
  padding-top: clamp(4.5rem, 9vw, 7rem);
  padding-bottom: clamp(3.5rem, 7vw, 5rem);
}
.footer--banner .footer__blessing {
  color: #FFF8F0;
  text-shadow: 0 2px 18px rgba(0,0,0,0.55), 0 0 28px rgba(189,149,64,0.24);
}
.footer__motif { color: var(--accent-2); font-size: 1.4rem; letter-spacing: 0.5em; margin-bottom: 1rem; }
.footer__blessing {
  font-family: var(--display); font-style: italic; font-size: clamp(1.2rem, 1rem + 1vw, 1.7rem);
  color: var(--accent); letter-spacing: 0.18em; text-transform: uppercase;
}
.footer__sub { margin-top: 0.8rem; color: var(--on-soft); font-size: 0.98rem; letter-spacing: 0.06em; }
.footer__credit { margin-top: 1.6rem; font-size: 0.82rem; color: var(--on-soft); opacity: 0.7; }

/* ---------- Page intro band (sub-pages) ---------- */
.page-intro {
  min-height: 58vh; display: grid; place-content: center; text-align: center;
  padding: calc(var(--nav-h) + 3rem) 1rem 2rem; gap: 0.6rem;
}
.page-intro h1 { font-size: clamp(2.6rem, 1.6rem + 6vw, 5rem); font-style: italic; }
.page-intro p { color: var(--on-soft); font-size: 1.12rem; max-width: 40ch; margin-inline: auto; }

/* ---------- Mobile nav ---------- */
@media (max-width: 760px) {
  .nav__toggle { display: block; z-index: 60; }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 1.6rem;
    background: color-mix(in srgb, var(--bg-1) 96%, var(--accent-2));
    transform: translateX(100%); transition: transform 460ms cubic-bezier(.5,0,.2,1);
    z-index: 55;
  }
  .nav__links a {
    color: var(--on);
    font-size: 1.7rem;
    font-weight: 600;
    opacity: 1;
    text-shadow: 0 1px 16px color-mix(in srgb, var(--bg-2) 34%, transparent);
  }
  body.menu-open .nav__links { transform: translateX(0); }
  body.menu-open .nav__toggle span {
    height: 2px;
    background: var(--on);
  }
  body.menu-open .nav__toggle span:nth-child(1) { top: 21px; transform: rotate(45deg); }
  body.menu-open .nav__toggle span:nth-child(2) { opacity: 0; }
  body.menu-open .nav__toggle span:nth-child(3) { top: 21px; transform: rotate(-45deg); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .sky__layer { transition: none; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}