/* ===== база ===== */
:root {
  --bg: #ffffff;
  --surface: #f5f5f6;
  --border: #e6e6ea;
  --text: #15151a;
  --muted: #6c6c74;
  --accent: #c81e28;
  --sans: 'Inter', -apple-system, sans-serif;
  --display: 'Russo One', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

/* ===== шапка подстраниц ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .logo {
  font-family: var(--display);
  font-size: 18px;
  letter-spacing: 2px;
  text-decoration: none;
  color: var(--text);
}
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .4px;
  transition: color .2s;
}
.site-nav a:hover { color: var(--text); }
.site-nav a.active { color: var(--text); font-weight: 600; }

/* ===== контейнер страниц ===== */
.page { max-width: 980px; margin: 0 auto; padding: 80px 40px 120px; }
.page-title {
  font-family: var(--display);
  font-size: clamp(34px, 6vw, 64px);
  font-weight: 400;
  letter-spacing: 1px;
  margin-bottom: 48px;
}

/* появление по скроллу (видимо по умолчанию) */
.reveal { transition: opacity .7s ease, transform .7s ease; }
.reveal.pre { opacity: 0; transform: translateY(28px); }
.reveal.on { opacity: 1; transform: none; }

/* ===== INTRO (приветствие, чёрным по белому) ===== */
#intro {
  position: relative;
  height: 100vh;
  height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  overflow: hidden;
}
.intro-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
}
.greet {
  display: grid;
  font-family: var(--display), 'Noto Sans SC', 'Noto Sans Arabic', sans-serif;
  font-weight: 400;
  font-size: clamp(54px, 16vw, 200px);
  line-height: 1;
  letter-spacing: 1px;
  color: #111;
}
.greet .gw {
  grid-area: 1 / 1;            /* слои стопкой */
  text-align: center;
  opacity: 0;
  transform: translateY(0.34em);
  filter: blur(14px);
  transition: opacity .6s ease,
              transform .6s cubic-bezier(.16,1,.3,1),
              filter .6s ease;
  will-change: opacity, transform, filter;
}
/* первое слово видно по умолчанию — даже если JS не отработал */
.greet .gw:first-child { opacity: 1; transform: none; filter: blur(0); }
.greet .gw.in  { opacity: 1; transform: none; filter: blur(0); }
.greet .gw.out { opacity: 0; transform: translateY(-0.34em); filter: blur(14px); }
.intro-sub {
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--muted);
  font-weight: 500;
  opacity: 0;
  animation: fadeUpSub .8s ease 1.2s forwards;
}
@keyframes fadeUpSub {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.scroll-down {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 20px;
  text-decoration: none;
  opacity: 0;
  animation: fadeDown .8s ease 1.8s forwards, bounce 2s ease 2.6s infinite;
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%     { transform: translateX(-50%) translateY(8px); }
}

/* ===== EMERGE (видео по кадрам) ===== */
#emerge { position: relative; background: #000; }
.emerge-stage {
  position: relative;
  height: 100vh;
  height: 100svh;
  width: 100%;
  overflow: hidden;
  background: #000;
}
.seq {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 1;
}
.seq-vignette {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  box-shadow: inset 0 0 220px 70px rgba(0,0,0,.8);
}
.emerge-hint {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  color: rgba(255,255,255,.55);
  font-size: 12px;
  letter-spacing: 2px;
  animation: bounceHint 2s ease infinite;
}
@keyframes bounceHint {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%     { transform: translateX(-50%) translateY(6px); }
}

/* меню «внутри телефона» — белое, строки со стрелками */
.phone-menu {
  position: absolute;
  inset: 0;
  z-index: 6;
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s ease;
}
.phone-menu.show { opacity: 1; pointer-events: auto; }
.pm-screen {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(28px, 5vw, 80px);
  background: #fff;
  color: #15151a;
}
.pm-list {
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
}
.pm-row {
  display: flex;
  align-items: center;
  gap: clamp(14px, 1.8vw, 30px);
  padding: clamp(18px, 2.6vw, 38px) 8px;
  border-bottom: 1px solid #e6e6ea;
  text-decoration: none;
  color: #15151a;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity .55s ease, transform .55s ease, background .25s ease;
}
.pm-row:first-child { border-top: 1px solid #e6e6ea; }
.phone-menu.show .pm-row { opacity: 1; transform: none; }
.phone-menu.show .pm-row:nth-child(2) { transition-delay: .1s; }
.phone-menu.show .pm-row:nth-child(3) { transition-delay: .2s; }
.pm-num {
  font-family: var(--display);
  font-size: clamp(11px, 1.1vw, 15px);
  color: #c2c2c8;
  width: 2.4em;
  flex-shrink: 0;
}
.pm-word {
  font-family: var(--display);
  font-size: clamp(34px, 6vw, 84px);
  line-height: 1.05;
  flex: 1;
  transition: transform .25s ease, color .25s ease;
}
.pm-arrow {
  font-size: clamp(20px, 2.6vw, 36px);
  color: #c2c2c8;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity .25s ease, transform .25s ease, color .25s ease;
}
.pm-row:hover { background: #fafafa; }
.pm-row:hover .pm-word { color: var(--accent); transform: translateX(10px); }
.pm-row:hover .pm-arrow { opacity: 1; transform: none; color: var(--accent); }

/* ===== ПОРТФОЛИО ===== */
.proj-subtitle {
  font-family: var(--display);
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 22px;
}
.deck + .proj-subtitle { margin-top: 64px; }
.sites-grid { margin-top: 22px; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  perspective: 1400px;
}
.project-card {
  background: var(--surface);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 6px 18px rgba(0,0,0,.06);
  transition: transform .3s cubic-bezier(.2,.9,.3,1.3), box-shadow .3s, border-color .3s, background .2s;
}
.project-card:hover {
  transform: translateY(-7px);
  background: #fafafa;
  border-color: #d6d6da;
  box-shadow: 0 18px 36px rgba(0,0,0,.12);
}
.project-card.featured { background: var(--surface); border-color: #dcdce0; }
.proj-tag {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}
.project-card h3 { font-size: 17px; font-weight: 700; }
.project-card p { color: var(--muted); font-size: 13px; line-height: 1.65; flex: 1; }
.proj-handle {
  font-size: 12px;
  color: var(--muted);
  font-family: var(--display);
  letter-spacing: .5px;
  margin-top: 6px;
  transition: color .2s;
}
.project-card:hover .proj-handle { color: var(--text); }

/* колода */
.deck { position: relative; }
.deck-trigger {
  position: relative;
  display: block;
  width: 100%;
  max-width: 340px;
  height: 200px;
  margin: 18px auto 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  perspective: 900px;
}
.deck-card {
  position: absolute;
  inset: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: transform .35s cubic-bezier(.2,.9,.3,1.2), box-shadow .35s ease;
  transform-origin: bottom center;
}
.deck-card-1 {
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  padding: 28px;
  background: #fff;
}
.deck-card-2 { z-index: 3; transform: rotate(-5deg) translateY(6px); opacity: .85; }
.deck-card-3 { z-index: 2; transform: rotate(5deg)  translateY(12px); opacity: .65; }
.deck-card-4 { z-index: 1; transform: rotate(-9deg) translateY(18px); opacity: .45; }
.deck-trigger:hover .deck-card-1 { transform: translateY(-8px) rotateX(8deg) scale(1.02); box-shadow: 0 26px 50px rgba(0,0,0,.18); }
.deck-trigger:hover .deck-card-2 { transform: rotate(-11deg) translateY(2px) rotateX(6deg); }
.deck-trigger:hover .deck-card-3 { transform: rotate(11deg)  translateY(8px) rotateX(6deg); }
.deck-trigger:hover .deck-card-4 { transform: rotate(-17deg) translateY(14px) rotateX(6deg); }
.deck-tag {
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); font-weight: 500;
}
.deck-count { font-family: var(--display); font-size: 26px; color: var(--text); }
.deck-hint { font-size: 12px; color: var(--muted); letter-spacing: .5px; }

.bots-grid { display: none; }
.deck-collapse {
  display: none;
  margin: 0 0 16px auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 1px;
  padding: 8px 16px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.deck-collapse:hover { color: var(--text); border-color: var(--text); }
.deck.open .deck-trigger { display: none; }
.deck.open .bots-grid { display: grid; }
.deck.open .deck-collapse { display: block; }
.bots-grid .project-card { will-change: transform, opacity; }
.deck.open.closing .deck-collapse { opacity: 0; transition: opacity .2s ease; pointer-events: none; }
.deck:not(.open) .deck-trigger {
  animation: deckPop .55s cubic-bezier(.2,.8,.3,1.05) both;
  transform-origin: 50% 42%;
}
@keyframes deckPop {
  0%   { opacity: 0; transform: scale(.6); filter: blur(4px); }
  55%  { opacity: 1; filter: blur(0); }
  100% { opacity: 1; transform: none; filter: blur(0); }
}

/* ===== УСЛУГИ ===== */
.services-list { display: flex; flex-direction: column; max-width: 680px; }
.service-item {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.service-item:first-child { border-top: 1px solid var(--border); }
.svc-num {
  font-size: 11px; letter-spacing: 3px;
  color: var(--muted); font-family: var(--display);
  padding-top: 5px; flex-shrink: 0;
}
.svc-body { display: flex; flex-direction: column; gap: 10px; }
.svc-body h3 { font-size: 22px; font-weight: 700; letter-spacing: .3px; }
.svc-body p { color: var(--muted); font-size: 15px; line-height: 1.7; }

/* ===== КОНТАКТЫ ===== */
.contact-links { display: flex; flex-direction: column; max-width: 460px; }
.clink {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  font-size: 18px;
  font-weight: 500;
  transition: padding-left .25s ease, color .25s ease;
}
.clink:first-child { border-top: 1px solid var(--border); }
.clink:hover { padding-left: 12px; color: var(--accent); }
.arr { color: var(--muted); transition: transform .25s ease; }
.clink:hover .arr { transform: translateX(6px); color: var(--accent); }

/* ===== футер ===== */
.site-footer {
  padding: 28px 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 1px;
}

/* ===== адаптив ===== */
@media (max-width: 900px) { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) {
  .site-header { padding: 14px 18px; }
  .site-nav { gap: 16px; }
  .site-nav a { font-size: 13px; }
  .page { padding: 56px 18px 90px; }
  .projects-grid { grid-template-columns: 1fr; }
  .service-item { gap: 20px; padding: 28px 0; }
  .svc-body h3 { font-size: 19px; }
  .clink { font-size: 16px; }
  .deck-trigger { height: 168px; }
  .deck-count { font-size: 23px; }
  .pm-screen { padding: 22px 20px; }
  .pm-row { padding: 20px 4px; gap: 14px; }
  .pm-num { width: 2em; }
}

/* на тач-экранах стрелка в меню видна сразу (нет ховера) */
@media (hover: none) {
  .pm-arrow { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .deck:not(.open) .deck-trigger { animation: none; }
}