/* ============================================================
   Анна Векслер — галерея. Базовый слой: палитра, типографика,
   бумага, зерно, навбар, подвал, служебные анимации.
   Палитра выведена из работ художницы: индиго, бирюза,
   терракота, золото, тёплый песок, графит.
   ============================================================ */
:root {
  --paper: #ece3d2;
  --paper-2: #e3d8c2;
  --paper-deep: #d8ccb2;
  --ink: #211c17;
  --ink-soft: #6c6152;
  --line: rgba(33, 28, 23, 0.15);

  --indigo: #1f3a4d;
  --teal: #2f6d7e;
  --terra: #b0512b;
  --rust: #9a3820;
  --gold: #c1934a;
  --cream: #f4ecdb;

  --accent: var(--terra);

  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-weave: cubic-bezier(0.76, 0, 0.24, 1);

  --nav-h: 68px;
  --maxw: 1280px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.65;
  background-color: var(--paper);
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(255,255,255,0.55), rgba(255,255,255,0) 45%),
    url("../images/other/paper-texture.webp");
  background-repeat: no-repeat, repeat;
  background-size: 100% 60vh, 480px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }

::selection { background: var(--terra); color: var(--cream); }

/* Плёнка-зерно поверх всего */
.grain {
  position: fixed;
  inset: -60%;
  width: 220%; height: 220%;
  z-index: 900;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 8s steps(5) infinite;
}
@keyframes grain {
  0%,100% { transform: translate(0,0); }
  20% { transform: translate(-4%,3%); }
  40% { transform: translate(3%,-4%); }
  60% { transform: translate(-3%,-3%); }
  80% { transform: translate(4%,4%); }
}

/* ============ Навбар ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 200;
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--line);
  transition: transform 0.5s var(--ease), background 0.4s;
}
.navbar.nav-hidden { transform: translateY(-100%); }

.nav-content {
  width: 92%;
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.logo-mark {
  width: 30px; height: 30px;
  flex: none;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.5), 0 1px 4px rgba(33,28,23,0.2);
}

.nav-links {
  display: flex;
  gap: clamp(1.1rem, 3vw, 2.4rem);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.nav-links a {
  position: relative;
  padding: 0.35rem 0;
  color: var(--ink-soft);
  transition: color 0.3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); transform-origin: left; }
.nav-links a.active { color: var(--ink); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 3; }
.nav-toggle span {
  width: 24px; height: 2px; background: var(--ink);
  transition: transform 0.35s var(--ease), opacity 0.3s;
}

/* ============ Заголовки секций ============ */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  flex-wrap: wrap;
  padding-bottom: 1.3rem;
  margin-bottom: clamp(2rem, 5vw, 3.6rem);
  border-bottom: 1px solid var(--line);
}
.section-num {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.section-head h1, .section-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.1rem, 5.5vw, 3.8rem);
  line-height: 1;
  letter-spacing: -0.01em;
}
.section-sub {
  margin-left: auto;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ============ Кнопки ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 1.7rem;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  border-radius: 100px;
  transition: background 0.4s var(--ease), color 0.4s, border-color 0.4s, transform 0.3s;
  overflow: hidden;
  position: relative;
}
.btn:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--terra); border-color: var(--terra); }
.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ============ Подвал ============ */
.site-footer {
  position: relative;
  z-index: 2;
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3.5rem, 8vw, 6rem) 1.5rem 2.4rem;
  text-align: center;
}
.footer-name {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 6vw, 3.4rem);
  font-weight: 500;
  margin-bottom: 1.4rem;
}
.footer-links {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 1.6rem;
  font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase;
}
.footer-links a {
  color: color-mix(in srgb, var(--paper) 70%, transparent);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}
.footer-links a:hover { color: var(--paper); border-color: var(--gold); }
.footer-note {
  margin-top: 2.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--paper) 42%, transparent);
}

/* ============ Переиспользуемый лайтбокс фотографий ============ */
.photobox {
  position: fixed; inset: 0; z-index: 800;
  display: none; align-items: center; justify-content: center;
  padding: clamp(1rem, 4vw, 3rem);
  background: color-mix(in srgb, var(--ink) 92%, transparent);
  backdrop-filter: blur(8px);
  opacity: 0; transition: opacity 0.35s;
}
.photobox.show { display: flex; }
.photobox.open { opacity: 1; }
.photobox img {
  max-width: 94vw; max-height: 86vh; object-fit: contain;
  background: var(--cream); padding: 12px;
  box-shadow: 0 40px 90px rgba(0,0,0,0.6);
  cursor: zoom-out;
}
.photobox .pb-cap {
  position: absolute; bottom: 1.4rem; left: 0; right: 0;
  text-align: center; color: var(--paper);
  font-family: var(--serif); font-size: 1.3rem;
}
.photobox .pb-x, .photobox .pb-prev, .photobox .pb-next {
  position: absolute; z-index: 2;
  border-radius: 50%;
  color: var(--paper); border: 1px solid rgba(255,255,255,0.35);
}
.photobox .pb-x { top: 1.3rem; right: 1.3rem; width: 48px; height: 48px; font-size: 1rem; }
.photobox .pb-prev, .photobox .pb-next { top: 50%; transform: translateY(-50%); width: 52px; height: 52px; font-size: 1.1rem; }
.photobox .pb-prev { left: clamp(0.6rem, 2vw, 1.6rem); }
.photobox .pb-next { right: clamp(0.6rem, 2vw, 1.6rem); }
.photobox .pb-x:hover, .photobox .pb-prev:hover, .photobox .pb-next:hover { background: rgba(255,255,255,0.14); }
.photobox.single .pb-prev, .photobox.single .pb-next { display: none; }

/* соцсети в подвале */
.footer-socials {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 1.2rem;
  margin-top: 1.4rem;
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
}
.footer-socials a {
  color: color-mix(in srgb, var(--paper) 72%, transparent);
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  transition: color 0.3s, border-color 0.3s;
}
.footer-socials a:hover { color: var(--paper); border-color: var(--gold); }

/* кнопки-иконки соцсетей */
.social-buttons { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.4rem; }
.social-btn {
  width: 42px; height: 42px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid color-mix(in srgb, currentColor 35%, transparent);
  color: inherit;
  transition: background 0.3s var(--ease), color 0.3s, border-color 0.3s, transform 0.3s;
}
.social-btn svg { width: 20px; height: 20px; display: block; }
.social-btn.is-text { width: auto; padding: 0 1rem; border-radius: 100px; font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; }
.social-btn:hover { transform: translateY(-2px); }
/* в тёмном подвале */
.site-footer .social-btn { color: color-mix(in srgb, var(--paper) 78%, transparent); }
.site-footer .social-btn:hover { background: var(--terra); border-color: var(--terra); color: var(--cream); }
/* на светлых страницах (about) */
.contact-block .social-btn { color: var(--ink-soft); }
.contact-block .social-btn:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }

/* ============ Интро-анимация «ткацкий станок» ============ */
.loom-intro {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--paper);
  overflow: hidden;
  opacity: 1;
  transition: opacity 0.7s ease;
}
.loom-intro.done { opacity: 0; pointer-events: none; }
.loom-intro canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.loom-intro .brand {
  position: absolute; left: 0; right: 0; bottom: 14%;
  text-align: center;
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.6rem, 5vw, 3rem);
  letter-spacing: 0.05em; color: var(--ink);
  opacity: 0;
  animation: brandIn 1.4s 0.7s ease forwards;
}
@keyframes brandIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ============ Появление при скролле ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* ============ Мобильные ============ */
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: center;
    gap: 1.6rem;
    padding: 2.4rem 1rem 2.8rem;
    background: color-mix(in srgb, var(--paper) 96%, transparent);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    font-size: 0.85rem;
    transform: translateY(-120%);
    transition: transform 0.5s var(--ease);
  }
  .navbar.open .nav-links { transform: none; }
  .navbar.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .navbar.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .navbar.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .section-sub { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .grain { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.05ms !important; }
}

/* Заголовок для поиска и скринридеров: есть в разметке, не виден на экране */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0;
}

/* Уведомление об авторских правах в подвале */
.footer-rights {
  max-width: 46rem; margin: 0.5rem auto 0;
  font-size: 0.7rem; line-height: 1.5; color: var(--ink-soft); opacity: 0.75;
}