/* ============================================================
   Dmitrenko Consulting — PREMIUM layer
   Loaded after styles.css. Adds the "$1M studio" craft:
   preloader · kinetic type · scroll HUD · marquees ·
   giant outline type · refined micro-detail.
   ============================================================ */

/* ---------- section color seams (sections flow into each other) ---------- */
.seam { height: clamp(90px, 13vh, 170px); position: relative; z-index: 1; pointer-events: none; }
.seam-l2d { background: linear-gradient(var(--bg-2), var(--dark-bg)); }
.seam-d2l { background: linear-gradient(var(--dark-bg), var(--bg)); }

/* ---------- portrait: color by default, subtle zoom on hover ---------- */
.portrait-frame img { transition: transform .9s var(--ease); }
.portrait-frame:hover img { transform: scale(1.04); }

/* ---------- honest reassurance row (final) ---------- */
.reassure {
  display: flex; flex-wrap: wrap; gap: 14px 26px; margin-top: clamp(22px, 3vw, 34px);
  font-family: var(--mono); font-size: clamp(11px, 1vw, 13px); letter-spacing: 0.04em; color: var(--dark-soft);
}
.reassure .r-item { display: inline-flex; align-items: center; gap: 10px; }
.reassure .r-check {
  flex: none; width: 17px; height: 17px; border-radius: 50%; border: 1px solid var(--accent-2);
  display: inline-flex; align-items: center; justify-content: center; color: var(--accent-2); font-size: 9px;
}

/* ---------- shared hairline metadata row ---------- */
.meta-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 0; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
}
.meta-row .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); display: inline-block; }
.meta-row .live { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); }
.meta-row .live .pulse { position: relative; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.meta-row .live .pulse::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--accent); opacity: 0; animation: pulse 2.4s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(0.6); opacity: 0.8; } 100% { transform: scale(1.8); opacity: 0; } }
.method .meta-row, .final .meta-row { border-top-color: var(--dark-line); color: var(--dark-muted); }
.method .meta-row .live, .final .meta-row .live { color: var(--dark-ink); }

/* big section index number */
.sec-index {
  font-family: var(--mono); font-size: clamp(12px, 1vw, 14px);
  letter-spacing: 0.12em; color: var(--accent); font-weight: 500;
}

/* ============================================================
   METHOD — pinned, centered, crossfading steps
   ============================================================ */
.method-pin { position: relative; height: 440vh; }
.method-viewport {
  /* svh (small viewport height) is STABLE on mobile — unlike vh it does not
     grow/shrink as the URL bar hides during momentum scroll, which was making
     the pinned stage resize every frame = the "shake". */
  position: sticky; top: 0; height: 100svh; min-height: 620px;
  display: flex; flex-direction: column; justify-content: center; overflow: hidden;
}
.method-viewport::after {
  content: ""; position: absolute; left: 0; right: 0; top: 12%; height: 1px; pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--accent-2), transparent); opacity: 0.4;
  animation: stageScan 6s ease-in-out infinite;
}
.mstage {
  display: grid; grid-template-columns: minmax(0, auto) 1fr; gap: clamp(24px, 5vw, 80px);
  align-items: center; width: 100%;
}
.mstage-num {
  font-weight: 700; font-size: clamp(6rem, 23vw, 21rem); line-height: 0.78; letter-spacing: -0.05em;
  color: transparent; -webkit-text-stroke: 1.6px var(--accent-2); will-change: transform, opacity;
}
.mstage-body { max-width: 44ch; will-change: transform, opacity; }
/* reserve space for the tallest step so swapping text doesn't reflow the
   vertically-centred stage (was causing a "shake" as height changed).
   title can wrap to 2 lines (e.g. "Сборка системы") on desktop; desc
   can run 3 lines — pin both to their max so the layout never jumps. */
.mstage-title { min-height: 2em; }
.mstage-desc { min-height: 4.5em; }
.mstage-step { font-family: var(--mono); font-size: clamp(12px, 1vw, 14px); letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-2); }
.mstage-title { font-size: clamp(2.4rem, 5.5vw, 5rem); font-weight: 600; letter-spacing: -0.03em; color: var(--dark-ink); margin-top: 16px; line-height: 1.0; }
.mstage-desc { margin-top: 22px; font-size: clamp(1.1rem, 1.6vw, 1.6rem); line-height: 1.5; color: var(--dark-soft); }

.mstage-railwrap { position: absolute; left: var(--pad); right: var(--pad); bottom: clamp(36px, 7vh, 80px); }
.mstage-rail { position: relative; height: 22px; }
.mstage-rail .rail-line { position: absolute; top: 50%; left: 0; right: 0; height: 1.5px; background: var(--dark-line); transform: translateY(-50%); }
.mstage-rail .rail-line-fill { position: absolute; left: 0; top: 0; height: 100%; width: 0; background: var(--accent-2); transition: width .6s var(--ease); }
.mstage-rail .rail-dot {
  position: absolute; top: 50%; width: 9px; height: 9px; border-radius: 50%;
  background: var(--dark-bg); border: 1.5px solid var(--dark-muted); transform: translate(-50%, -50%);
  transition: background .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
}
.mstage-rail .rail-dot.on { background: var(--accent-2); border-color: var(--accent-2); }
.mstage-rail .rail-dot.cur { transform: translate(-50%, -50%) scale(1.5); box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 22%, transparent); }
.mstage-rail .rail-pulse {
  position: absolute; top: 50%; left: 0; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2);
  transform: translate(-50%, -50%); animation: railFlow 3s linear infinite;
}
.mstage-rail .rail-pulse.b { animation-delay: 1.5s; }
@keyframes railFlow { 0% { left: 0; opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
.mstage-rail-labels { display: flex; justify-content: space-between; margin-top: 16px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--dark-muted); }

@media (max-width: 820px) {
  .method-pin { height: 480vh; }
  .mstage { grid-template-columns: 1fr; gap: 8px; }
  .mstage-num { font-size: clamp(5rem, 32vw, 11rem); }
}
.hero { z-index: 0; }

/* ============================================================
   STACKING SCROLL — about → method → offer → faq → final → footer
   Each darker/lighter layer rises over the previous one with a rounded
   top + lift shadow + hairline, instead of a flat gradient seam.
   ============================================================ */
.about{ position:relative; z-index:0; }
/* NOTE: the soft box-shadows that gave each rising card a "lift" were
   removed — a large blur-radius shadow on a full-width STICKY layer is
   recomputed every scroll frame and was the main cause of scroll jank in
   this stack. The rounded top + the accent hairline (::before below) keep
   the "card rising over the previous section" read, with zero paint cost. */
.method{
  position:relative; z-index:1;
  border-top-left-radius:clamp(20px,2.6vw,38px); border-top-right-radius:clamp(20px,2.6vw,38px);
}
.offer{
  position:sticky; top:0; z-index:2;
  min-height:100vh; display:flex; flex-direction:column; justify-content:center;
  padding-top:clamp(70px,9vw,120px); padding-bottom:clamp(70px,9vw,120px);
  border-top-left-radius:clamp(20px,2.6vw,38px); border-top-right-radius:clamp(20px,2.6vw,38px);
}
.faq{
  position:sticky; top:0; z-index:3;
  min-height:100vh; display:flex; flex-direction:column; justify-content:center;
  padding-top:clamp(70px,9vw,120px); padding-bottom:clamp(70px,9vw,120px);
  border-top-left-radius:clamp(20px,2.6vw,38px); border-top-right-radius:clamp(20px,2.6vw,38px);
}
.final{
  position:relative; z-index:4;
  border-top-left-radius:clamp(20px,2.6vw,38px); border-top-right-radius:clamp(20px,2.6vw,38px);
}
.footer{
  position:relative; z-index:5;
  /* footer joins the cardholder: rounded top + slight overlap over the final
     section, so the last seam reads like a rising card too */
  border-top-left-radius:clamp(20px,2.6vw,38px); border-top-right-radius:clamp(20px,2.6vw,38px);
  margin-top:calc(-1 * clamp(22px, 4vw, 38px));
}
/* hairline highlight on the rising edge */
.method::before, .offer::before, .faq::before, .final::before, .footer::before{
  content:""; position:absolute; left:0; right:0; top:0; height:1px; z-index:5;
  border-top-left-radius:inherit; border-top-right-radius:inherit;
}
.method::before{ background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--accent-2) 55%, transparent), transparent); }
.offer::before{ background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--accent) 50%, transparent), transparent); }
.faq::before{ background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--ink) 14%, transparent), transparent); }
.final::before{ background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--accent-2) 60%, transparent), transparent); }
.footer::before{ background:linear-gradient(90deg, transparent, color-mix(in oklab, var(--dark-ink) 22%, transparent), transparent); }
@media (max-width: 820px){
  /* Mobile card-stack: full pinning would clip sections taller than a phone
     screen (offer/final exceed 100vh), hiding content. So instead of pinning,
     we keep natural flow and let each next layer rise OVER the previous one
     with a rounded top, shadow and slight overlap — the seam tucks behind it
     as you scroll ("разделения уходят за страницу"), no content lost. */
  .offer, .faq{ position:relative; min-height:0; display:block; }
  /* Method also rises over About on mobile (was a gradient seam) */
  .method, .offer, .faq, .final{
    border-top-left-radius:24px; border-top-right-radius:24px;
    margin-top:calc(-1 * clamp(22px, 7vw, 38px));
  }
  .about{ z-index:0; }
  .method{ z-index:1; }
  .offer{ z-index:2; }
  .faq{ z-index:3; }
  .final{ z-index:4; }
}

/* ============================================================
   PRELOADER
   ============================================================ */
.preloader {
  position: fixed; inset: 0; z-index: 10000; background: var(--dark-bg); color: var(--dark-ink);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: clamp(24px, 5vw, 60px) var(--pad);
  overflow: hidden;
}
.preloader .pl-grain { position: absolute; inset: 0; opacity: 0.06; pointer-events: none; }
.preloader .pl-top { display: flex; justify-content: space-between; align-items: center; position: relative; z-index: 2;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dark-muted); }
.preloader .pl-center { position: relative; z-index: 2; align-self: center; margin: auto 0; text-align: center; }
.preloader .pl-word {
  font-weight: 600; letter-spacing: -0.02em; line-height: 1;
  /* one-line lockup (DMITRENKO | SALES LAB) — sized to fit narrow screens */
  font-size: clamp(1.5rem, 6.5vw, 4.2rem); color: var(--dark-ink);
}
.preloader .pl-word .ln { display: block; overflow: hidden; }
/* single mask-child = the lockup itself. block-level flex (display:flex,
   not inline-flex) so it keeps a normal line height → GSAP's yPercent
   reveal computes correctly. Centred via justify-content. */
.preloader .pl-word .ln > .lnq {
  display: flex; justify-content: center; align-items: center; gap: 0.5em; white-space: nowrap;
  will-change: transform;
}
.preloader .pl-word .a { font-weight: 700; }
.preloader .pl-word .pipe { width: 2px; height: 0.82em; background: var(--accent-2); display: inline-block; }
.preloader .pl-word .b { font-weight: 300; letter-spacing: 0.1em; }
.preloader .pl-sub { margin-top: 18px; font-family: var(--mono); font-size: clamp(10px, 1vw, 13px); letter-spacing: 0.4em; text-transform: uppercase; color: var(--accent-2); opacity: 0; }
.preloader .pl-bottom { position: relative; z-index: 2; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.preloader .pl-count { font-family: var(--mono); font-weight: 500; font-size: clamp(2.4rem, 7vw, 5.5rem); line-height: 0.8; letter-spacing: -0.03em; color: var(--dark-ink); }
.preloader .pl-bar { flex: 1; max-width: 42%; height: 2px; background: var(--dark-line); position: relative; margin-bottom: 10px; }
.preloader .pl-bar i { position: absolute; inset: 0; transform-origin: left; transform: scaleX(0); background: var(--accent-2); }
.preloader .pl-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--dark-muted); }
.preloader.done { transform: translateY(-101%); transition: transform 1.05s cubic-bezier(0.76,0,0.24,1); }
html.pl-lock, html.pl-lock body { overflow: hidden; height: 100%; }

/* hold hero hidden under loader until reveal */
html.pl-lock .hero-inner { opacity: 0; }

/* ============================================================
   SCROLL HUD (right-side index + progress + label)
   ============================================================ */
.scroll-hud {
  position: fixed; right: clamp(14px, 2.2vw, 34px); top: 50%; transform: translateY(-50%);
  z-index: 900; display: flex; flex-direction: column; align-items: center; gap: 16px;
  mix-blend-mode: difference; color: #fff; pointer-events: none;
}
.scroll-hud .hud-idx { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; }
.scroll-hud .hud-track { width: 1.5px; height: 130px; background: rgba(255,255,255,0.28); position: relative; border-radius: 4px; }
.scroll-hud .hud-fill { position: absolute; left: 0; right: 0; top: 0; height: 0; background: #fff; border-radius: 4px; }
.scroll-hud .hud-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.28em; text-transform: uppercase; writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
@media (max-width: 900px) { .scroll-hud { display: none; } }

/* ============================================================
   KINETIC TYPE — word reveal + skew
   ============================================================ */

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee {
  --gap: clamp(28px, 4vw, 64px);
  position: relative; overflow: hidden; padding: clamp(20px, 3vw, 40px) 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.marquee.on-dark { background: var(--dark-bg); border-color: var(--dark-line); }
.marquee .track { display: flex; gap: var(--gap); width: max-content; will-change: transform; }
.marquee .item {
  display: inline-flex; align-items: center; gap: var(--gap);
  font-weight: 600; letter-spacing: -0.02em; font-size: clamp(1.6rem, 4vw, 3.4rem);
  color: var(--ink); white-space: nowrap;
}
.marquee.on-dark .item { color: var(--dark-ink); }
.marquee .item .star { color: var(--accent); font-weight: 400; }
.marquee .item.ghost { color: transparent; -webkit-text-stroke: 1px var(--muted); }
.marquee.on-dark .item.ghost { -webkit-text-stroke: 1px var(--dark-muted); }

/* ============================================================
   ABOUT — giant outline name behind portrait
   ============================================================ */
.about { z-index: 1; }
.about .ghost-name {
  position: absolute; left: 50%; top: clamp(20px, 4vw, 60px); transform: translateX(-50%);
  font-weight: 700; font-size: clamp(4rem, 19vw, 19rem); letter-spacing: -0.04em; line-height: 0.8;
  color: transparent; -webkit-text-stroke: 1.2px var(--line); white-space: nowrap; pointer-events: none;
  z-index: 0; opacity: 0.9; will-change: transform;
}
.about-grid { position: relative; z-index: 1; }
.portrait-frame { box-shadow: 0 50px 100px -50px color-mix(in oklab, var(--ink) 60%, transparent); }
.portrait-frame .corner { position: absolute; width: 16px; height: 16px; z-index: 4; opacity: 0.8; }
.portrait-frame .corner::before, .portrait-frame .corner::after { content: ""; position: absolute; background: var(--dark-soft); }
.portrait-frame .corner.tl { top: 12px; left: 12px; }
.portrait-frame .corner.tl::before { width: 16px; height: 1.5px; } .portrait-frame .corner.tl::after { width: 1.5px; height: 16px; }
.portrait-frame .corner.br { bottom: 12px; right: 12px; }
.portrait-frame .corner.br::before { bottom: 0; right: 0; width: 16px; height: 1.5px; } .portrait-frame .corner.br::after { bottom: 0; right: 0; width: 1.5px; height: 16px; }

/* ============================================================
   BUTTON — clean, reliable hover (no overlay, no hidden text)
   ============================================================ */
.btn { overflow: hidden; transition: transform .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease); }
.btn-primary:hover { background: var(--accent-2); transform: translateY(-2px); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); transform: translateY(-2px); }
.btn-ghost:hover .label { color: var(--on-accent); }
.btn-ghost:active { transform: translateY(0); }

/* ============================================================
   LINK underline sweep (footer + inline)
   ============================================================ */
.f-links a:not(.btn) { position: relative; }
.f-links a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -3px; height: 1px; width: 100%;
  background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .45s var(--ease);
}
.f-links a:not(.btn):hover::after { transform: scaleX(1); transform-origin: left; }

/* ============================================================
   GIANT FOOTER WORDMARK
   ============================================================ */
.footer-mega { position: relative; overflow: hidden; padding-top: clamp(30px, 5vw, 70px); }
.footer-mega .mega-svg { width: 100%; display: block; }
.footer-mega .mega-svg .mt-fill { font-family: var(--sans); font-weight: 700; fill: var(--dark-ink); font-size: 150px; }
.footer-mega .mega-svg .mt-stroke { font-family: var(--sans); font-weight: 700; fill: transparent; stroke: var(--dark-line); stroke-width: 1.2px; font-size: 150px; }
.footer-mega .mega-sub {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 26px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--dark-muted);
}

/* ============================================================
   HERO refinements
   ============================================================ */
.hero .hero-meta {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted);
  padding-bottom: 16px; margin-bottom: clamp(28px, 5vw, 60px); border-bottom: 1px solid var(--line);
}
.hero .hero-meta .right { display: inline-flex; gap: 18px; }
@media (max-width: 620px) { .hero .hero-meta .right span:not(.yr) { display: none; } }

/* section vertical label + index on light sections */
.sec-tag {
  position: absolute; left: var(--pad); top: clamp(30px, 6vw, 80px);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted);
  writing-mode: vertical-rl; display: none;
}
@media (min-width: 1280px) { .sec-tag { display: block; } }