/* =====================================================================
   SAVRIN PRODUCTION — стили сайта-портфолио
   Тёмная кинематографичная тема. Секции добавляются по этапам плана.
   ===================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }

/* ---------- Дизайн-токены ---------- */
:root {
  --bg:      #0a0a0b;   /* near-black фон */
  --bg-2:    #141419;   /* приподнятые поверхности (карточки) */
  --fg:      #f4f4f5;   /* основной текст */
  --muted:   #9a9aa3;   /* второстепенный текст */
  --accent:  #ff4d2d;   /* единственный акцент — энергия/движение */
  --line:    rgba(255,255,255,.10);

  --maxw:    1240px;
  --pad:     clamp(1.25rem, 5vw, 4rem);

  --font-display: 'Oswald', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --font-mono:    'Space Mono', ui-monospace, monospace;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Уважать пользователей, отключивших анимации */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

:root { --nav-h: 72px; }

/* ---------- Навигация ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  transition: background .35s var(--ease), backdrop-filter .35s var(--ease), border-color .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav--scrolled {
  background: rgba(10,10,11,.72);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line);
}

.nav__logo { display: flex; align-items: baseline; gap: .5ch; line-height: 1; }
.nav__logo-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.nav__logo-sub {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav__links { display: flex; gap: clamp(1.2rem, 3vw, 2.4rem); }
.nav__links a {
  position: relative;
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg);
  padding: .4em 0;
  transition: color .25s var(--ease);
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__links a:hover { color: var(--accent); }
.nav__links a:hover::after { transform: scaleX(1); }

/* Бургер — по умолчанию скрыт; на мобильном показывается (см. адаптив). 44×44 — комфортный тач-таргет */
.nav__burger { display: none; width: 44px; height: 44px; position: relative; z-index: 101; }
.nav__burger span {
  position: absolute;
  left: 50%;
  width: 24px; height: 2px;
  background: var(--fg);
  transform: translateX(-50%);
  transition: top .3s var(--ease), transform .3s var(--ease), opacity .3s var(--ease);
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { top: 21px; }
.nav__burger span:nth-child(3) { top: 26px; }

/* ---------- Секции ---------- */
.section {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  scroll-margin-top: var(--nav-h);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) var(--pad) 4rem;
}

/* ---------- Обложка (hero) ---------- */
.hero {
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--nav-h) var(--pad) 0;
  overflow: hidden;
}
.hero__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -2;
}
/* Затемнение для читаемости текста поверх видео */
.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 50% 30%, transparent 0%, rgba(10,10,11,.55) 100%),
    linear-gradient(180deg, rgba(10,10,11,.5) 0%, rgba(10,10,11,.15) 40%, rgba(10,10,11,.85) 100%);
}

.hero__inner { position: relative; max-width: 60rem; }

.hero__kicker {
  font-family: var(--font-mono);
  font-size: clamp(.65rem, 1.6vw, .8rem);
  letter-spacing: .38em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: clamp(1rem, 3vw, 1.75rem);
}

.hero__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  line-height: .86;
  font-weight: 700;
}
.hero__title-main {
  display: block;
  font-size: clamp(3.4rem, 15vw, 12rem);
  letter-spacing: .01em;
}
.hero__title-sub {
  display: block;
  font-weight: 300;
  font-size: clamp(1.15rem, 5.4vw, 4.2rem);
  letter-spacing: clamp(.18em, 1.4vw, .5em);
  color: var(--fg);
  margin-top: .1em;
  padding-left: .5em; /* компенсация трекинга справа */
}

.hero__lead {
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
  font-size: clamp(.95rem, 2.4vw, 1.35rem);
  letter-spacing: .04em;
  color: var(--fg);
}
.hero__slogan {
  margin-top: .5rem;
  font-size: clamp(.82rem, 2vw, 1rem);
  color: var(--muted);
}

/* Подсказка «листай вниз» */
.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: clamp(1.5rem, 4vh, 2.5rem);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .7rem;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color .3s var(--ease);
}
.hero__scroll:hover { color: var(--fg); }
.hero__scroll-line {
  width: 1px; height: 46px;
  background: linear-gradient(180deg, var(--fg), transparent);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: -50%; left: 0;
  width: 100%; height: 50%;
  background: var(--accent);
  animation: scrollPulse 1.8s var(--ease) infinite;
}
@keyframes scrollPulse {
  0%   { top: -50%; }
  100% { top: 100%; }
}

/* ---------- Общие элементы секций ---------- */
.section__head { max-width: 62rem; margin-bottom: clamp(2rem, 5vw, 3.75rem); }
.kicker {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-weight: 600;
  line-height: .95;
  font-size: clamp(2.2rem, 7vw, 5rem);
  letter-spacing: .01em;
}
.section__desc {
  margin-top: 1.15rem;
  max-width: 42rem;
  color: var(--muted);
  font-size: clamp(.95rem, 2vw, 1.08rem);
}

/* ---------- Сетка работ ---------- */
.works {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* база/планшет: 2 колонки (десктоп/мобайл — в медиа-запросах) */
  gap: clamp(.9rem, 1.8vw, 1.5rem);
}
.work__btn {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 6px;
  background: var(--bg-2);
  isolation: isolate;
}
.work__thumb {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease), filter .4s var(--ease);
}
.work__btn::before { /* затемнение снизу для читаемости подписи */
  content: "";
  position: absolute; inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, transparent 45%, rgba(6,6,8,.85) 100%);
  opacity: .9;
  transition: opacity .4s var(--ease);
}
.work__play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(.9);
  z-index: 2;
  width: 66px; height: 66px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.7);
  background: rgba(10,10,11,.35);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity .35s var(--ease), transform .35s var(--ease), background .35s var(--ease);
}
.work__play::after { /* треугольник play */
  content: "";
  position: absolute;
  top: 50%; left: 54%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 9px 0 9px 15px;
  border-color: transparent transparent transparent #fff;
}
.work__meta {
  position: absolute;
  left: 1rem; bottom: .9rem;
  z-index: 2;
  display: flex; align-items: baseline; gap: .6rem;
}
.work__index {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--accent);
}
.work__title {
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--fg);
  text-transform: uppercase;
}
/* Ховер / фокус карточки */
.work__btn:hover .work__thumb,
.work__btn:focus-visible .work__thumb { transform: scale(1.06); }
.work__btn:hover .work__play,
.work__btn:focus-visible .work__play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.work__btn:hover .work__play { background: var(--accent); border-color: var(--accent); }
.work__btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Fullscreen-плеер ---------- */
.player {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 5vw, 4rem);
  background: rgba(4,4,6,.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.player[hidden] { display: none; }
.player.is-open { opacity: 1; }
body.player-open { overflow: hidden; }

.player__stage {
  width: min(1120px, 100%);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.player__video {
  width: 100%; height: 100%;
  background: #000;
  border-radius: 4px;
  box-shadow: 0 30px 80px rgba(0,0,0,.6);
}
.player__fallback { color: var(--muted); font-size: 1rem; text-align: center; }

.player__close {
  position: absolute;
  top: clamp(1rem, 3vw, 2rem);
  right: clamp(1rem, 3vw, 2rem);
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--fg);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
  transition: background .25s var(--ease), color .25s var(--ease);
}
.player__close:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.player__close:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Обо мне ---------- */
.about { background: linear-gradient(180deg, var(--bg) 0%, #0d0d12 100%); }
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.about__lead {
  font-size: clamp(1.15rem, 2.6vw, 1.75rem);
  line-height: 1.4;
  color: var(--fg);
  max-width: 40ch;
}
.about__note { margin-top: 1.25rem; color: var(--muted); }
.about__facts {
  margin-top: clamp(2rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
}
.about__facts li { display: flex; flex-direction: column; gap: .35rem; }
.about__facts span {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
}
.about__facts li { font-size: 1.05rem; color: var(--fg); }

/* ---------- Контакты ---------- */
.contact { text-align: center; align-items: center; }
.contact__inner { max-width: 54rem; display: flex; flex-direction: column; align-items: center; }
.contact__title {
  font-size: clamp(2.6rem, 10vw, 7rem);
  margin-bottom: 1.25rem;
}
.contact__desc { color: var(--muted); font-size: clamp(1rem, 2.4vw, 1.25rem); max-width: 34rem; }

.services {
  margin: clamp(2rem, 5vw, 3.25rem) 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .6rem .7rem;
}
.services li {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--fg);
  padding: .55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255,255,255,.02);
}

/* ---------- Кнопки ---------- */
.contact__cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .95rem 1.6rem;
  border-radius: 100px;
  font-weight: 500;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: #ff6347; }
.btn--ghost { border-color: var(--line); color: var(--fg); background: rgba(255,255,255,.02); }
.btn--ghost:hover { border-color: var(--fg); }

/* ---------- Футер ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: clamp(2rem, 5vw, 3rem) var(--pad);
  background: var(--bg);
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}
.footer__logo {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: .95rem;
}
.footer__social { display: flex; gap: 1.5rem; }
.footer__social a {
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--muted);
  transition: color .25s var(--ease);
}
.footer__social a:hover { color: var(--accent); }
.footer__copy { font-size: .78rem; color: var(--muted); }

/* =====================================================================
   Адаптив
   ===================================================================== */

/* Десктоп: 3 колонки работ */
@media (min-width: 1000px) {
  .works { grid-template-columns: repeat(3, 1fr); }
}

/* Планшет и уже: «Обо мне» — одна колонка */
@media (max-width: 860px) {
  .about__grid { grid-template-columns: 1fr; }
  .about__head { margin-bottom: 1rem; }
}

/* Мобильное меню (бургер) */
@media (max-width: 720px) {
  .nav__burger { display: flex; flex-direction: column; justify-content: center; align-items: center; }
  .nav__links {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    background: rgba(10,10,11,.97);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transform: translateY(-100%);
    transition: transform .4s var(--ease);
  }
  body.menu-open .nav__links { transform: translateY(0); }
  .nav__links a { font-size: 1.5rem; letter-spacing: .04em; }
  .nav__links a::after { display: none; }

  /* Анимация бургера в крестик (все полоски съезжаются к центру 21px и вращаются) */
  body.menu-open .nav__burger span:nth-child(1) { top: 21px; transform: translateX(-50%) rotate(45deg); }
  body.menu-open .nav__burger span:nth-child(2) { opacity: 0; }
  body.menu-open .nav__burger span:nth-child(3) { top: 21px; transform: translateX(-50%) rotate(-45deg); }

  body.menu-open { overflow: hidden; }
}

/* Телефон: 1 колонка работ, компактнее отступы/типографика */
@media (max-width: 560px) {
  .works { grid-template-columns: 1fr; }
  .section { padding-top: calc(var(--nav-h) + 1.25rem); }
  .about__facts { gap: 1.25rem 2rem; }
  .contact__cta { width: 100%; }
  .btn { flex: 1 1 auto; justify-content: center; }
}