/* ============================================================
   shared-chrome.css — Header, Footer, Buttons, Floating
   Только общие элементы сайта для страниц проектов.
   Не содержит глобальных сбросов, body-стилей и секций лендинга.
   ============================================================ */

/* ── CSS-переменные (дублируем нужные из landing-v5.css) ── */
:root {
  --bronze-matte:
    radial-gradient(ellipse 140% 90% at 50% 55%,
      #b87742 0%,
      #a86a3a 22%,
      #8a5227 45%,
      #4a2c17 78%,
      #241610 100%);
  --bronze-matte-hover:
    radial-gradient(ellipse 140% 90% at 50% 50%,
      #cc8a52 0%,
      #b47540 20%,
      #92582b 44%,
      #4a2c17 78%,
      #201410 100%);
  --sg-bronze:     #a86a3a;
  --sg-bronze-600: #5c3820;
  --sg-ink:        #1e1e1e;
  --sg-ink-700:    #2e2e2e;
  --ease-out: cubic-bezier(.22,.68,0,1.2);
  --dur-fast: .2s;
}

/* ── Кнопки ── */
.sg-btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  font-family: var(--font-display, 'Oswald', sans-serif);
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 2.4px;
  font-size: 13px;
  padding: 18px 34px;
  border-radius: 2px;
  border: 1px solid transparent;
  background: #8b6a3f;
  color: #fff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: none;
  text-decoration: none;
  transition: background .2s, color .2s, transform .2s;
}
.sg-btn::before { content: none; display: none; }
.sg-btn > * { position: relative; z-index: 1; }
.sg-btn:hover  { background: #7a5c35; color: #fff; }
.sg-btn:active { transform: translateY(1px); }
.sg-btn--accent { background: #8b6a3f; color: #fff; border-color: transparent; }
.sg-btn--accent:hover { background: #7a5c35; }
.sg-btn--sm { padding: 12px 22px; font-size: 11px; letter-spacing: 2px; }

/* ── Header ── */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 60;
  padding: 22px clamp(24px, 3vw, 48px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  transition: padding .3s, background .3s, border-color .3s, backdrop-filter .3s, color .3s;
  border-bottom: 1px solid transparent;
  color: var(--sg-ink);
}
.header-inner {
  display: contents;
}
.header.is-scrolled {
  padding: 14px clamp(24px, 3vw, 48px);
  background: rgba(245, 242, 236, 0.96);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom-color: rgba(30,30,30,.08);
  color: var(--sg-ink);
}

/* Logo / Brand */
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-lockup { display: flex; flex-direction: column; line-height: 1; }
.brand-name {
  font-family: var(--font-display, 'Oswald', sans-serif);
  font-weight: 700;
  font-size: 15px; letter-spacing: .12em; text-transform: uppercase;
  color: inherit;
}
.brand-sub {
  font-family: var(--font-display, 'Oswald', sans-serif);
  font-weight: 400; color: var(--sg-bronze);
  font-size: 10px; letter-spacing: .35em; text-transform: uppercase; margin-top: 3px;
}
.header.is-scrolled .brand-sub { color: var(--sg-bronze); }

/* SVG марка */
.header .brand-mark .tower      { fill: #3a3a3a; }
.header .brand-mark .tower-tall { fill: #1e1e1e; }

/* На тёмном hero — белый текст */
.header:not(.is-scrolled) { color: #fff; }
.header:not(.is-scrolled) .brand-mark .tower      { fill: #d8d2c8; }
.header:not(.is-scrolled) .brand-mark .tower-tall { fill: #fff; }
.header:not(.is-scrolled) .tg-btn:hover            { color: #d8b48a; }
.header:not(.is-scrolled) .sg-btn--accent:hover    { background: #a8763f; }

/* Nav */
.nav { display: flex; gap: 32px; }
.nav a {
  font-family: var(--font-display, 'Oswald', sans-serif);
  text-transform: uppercase;
  font-size: 12px; letter-spacing: .18em;
  color: inherit; font-weight: 300;
  opacity: .78;
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  text-decoration: none;
  transition: opacity .2s, border-color .2s;
}
.nav a:hover, .nav a.is-active { opacity: 1; border-color: var(--sg-bronze); }

/* Header actions */
.header-actions { display: flex; align-items: center; gap: 20px; }
.header-phone {
  font-family: var(--font-display, 'Oswald', sans-serif);
  text-transform: uppercase;
  font-size: 15px; letter-spacing: .08em; color: inherit; font-weight: 400;
  text-decoration: none;
}
.tg-btn {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  color: inherit; opacity: .85;
  text-decoration: none;
  transition: opacity .2s, color .2s;
}
.tg-btn:hover { opacity: 1; color: var(--sg-bronze); }
.tg-btn svg { width: 22px; height: 22px; }

@media (max-width: 1000px) {
  .nav { display: none; }
  .header-phone { display: none; }
}
@media (max-width: 380px) {
  .brand-name { font-size: 12px !important; letter-spacing: .08em; }
  .brand-sub  { font-size: 8px  !important; letter-spacing: .22em; }
  .brand-mark { width: 34px !important; height: 30px !important; }
}

/* ── Footer ── */
.footer {
  background: var(--sg-ink);
  color: rgba(255,255,255,.72);
  padding: 80px 0 32px;
}
.wrap-narrow {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(24px, 3vw, 48px);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer .brand-name { color: #fff; }
.footer .brand-sub  { color: var(--sg-bronze); }
.footer .brand-mark .tower      { fill: #4a4a4a; }
.footer .brand-mark .tower-tall { fill: #6e6e6e; }
.footer-p {
  font-family: var(--font-body, 'Inter', sans-serif); font-size: 13px;
  color: rgba(255,255,255,.55); line-height: 1.7; max-width: 320px; margin: 20px 0 0;
  font-weight: 300;
}
.footer-col h4 {
  font-family: var(--font-display, 'Oswald', sans-serif); text-transform: uppercase;
  font-size: 12px; letter-spacing: .2em; color: var(--sg-bronze);
  margin: 0 0 20px 0; font-weight: 400;
}
.footer-col a {
  display: block;
  font-family: var(--font-body, 'Inter', sans-serif); font-size: 13px;
  color: rgba(255,255,255,.72);
  margin-bottom: 12px;
  text-decoration: none;
  transition: color .2s;
}
.footer-col a:hover { color: var(--sg-bronze); }
.footer-contact-phone {
  font-family: var(--font-display, 'Oswald', sans-serif); text-transform: uppercase;
  font-size: 20px; letter-spacing: .05em; color: #fff; font-weight: 400; line-height: 1.3;
}
.footer-contact-details {
  font-family: var(--font-body, 'Inter', sans-serif); font-size: 13px;
  color: rgba(255,255,255,.55); line-height: 1.7; margin-top: 16px; font-weight: 300;
}
.footer-bottom {
  padding-top: 24px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-family: var(--font-display, 'Oswald', sans-serif); text-transform: uppercase;
  font-size: 11px; letter-spacing: .18em; color: rgba(255,255,255,.4); font-weight: 300;
}
.footer-bottom a {
  color: inherit; margin-right: 20px;
  border-bottom: 1px solid rgba(255,255,255,.2); padding-bottom: 1px;
  text-decoration: none;
}
.footer-bottom a:hover { color: var(--sg-bronze); border-color: var(--sg-bronze); }
.footer-dev {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.08);
}
.footer-dev-k {
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(255,255,255,.45);
  font-family: var(--font-display, 'Oswald', sans-serif);
}
.footer-dev-link {
  display: inline-flex; align-items: center; gap: 14px;
  text-decoration: none; opacity: .85; transition: opacity .2s;
}
.footer-dev-link:hover { opacity: 1; }
.footer-dev-link img { height: 19px; width: auto; display: block; }
.footer-dev-sub {
  font-size: 11px; line-height: 1.2; text-transform: uppercase;
  color: rgba(255,255,255,.55); letter-spacing: .02em;
  font-family: var(--font-display, 'Oswald', sans-serif);
}
@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
}

/* ── Floating buttons ── */
.floating {
  position: fixed; right: 20px; bottom: 20px;
  z-index: 50;
  display: flex; flex-direction: column; gap: 10px;
}
.floating a {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--sg-ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(30,30,30,.28);
  text-decoration: none;
  transition: transform .25s, background .25s;
}
.floating a:nth-child(1) {
  background: var(--bronze-matte); color: #fff;
  box-shadow: 0 10px 30px rgba(58,38,24,.4);
}
.floating a:hover { transform: translateY(-2px); }
.floating a:nth-child(2):hover { background: #2e2e2e; }
.floating a svg { width: 22px; height: 22px; }