/* ==================== Base & variables ==================== */
:root {
  --bg: #0d0d0d;
  --bg-alt: #161616;
  --bg-card: #1a1a1a;
  --border: #2a2a2a;
  --red: #e30613;
  --red-light: #ff2a2a;
  --text: #f5f5f5;
  --text-dim: #b3b3b3;
  --font-head: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', 'Segoe UI', Roboto, sans-serif;
  --header-h: 76px;
  --container: 1200px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 700;
}

h1 { font-size: clamp(32px, 5vw, 56px); }
h2 { font-size: clamp(26px, 3.4vw, 38px); }
h3 { font-size: 20px; }

p { margin: 0 0 16px; color: var(--text-dim); }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

section { padding: 72px 0; }

.section-head { max-width: 700px; margin: 0 auto 48px; text-align: center; }
.section-head p { font-size: 17px; }
.eyebrow {
  display: inline-block;
  color: var(--red);
  font-family: var(--font-head);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 10px;
}

.accent { color: var(--red); }

/* focus visibility for a11y */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--red-light);
  outline-offset: 2px;
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 3px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--red-light), var(--red));
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(227, 6, 19, 0.35); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--red); color: var(--red-light); transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ==================== Header ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(13, 13, 13, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(0,0,0,0.4); }

.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo { display: flex; align-items: center; height: 40px; }
.logo img { height: 100%; width: auto; }

.main-nav { display: flex; gap: 32px; }
.main-nav a {
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--text-dim);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--red);
  transition: width 0.25s ease;
}
.main-nav a:hover, .main-nav a.active { color: var(--text); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 20px; }
.header-phone { font-family: var(--font-head); letter-spacing: 1px; font-size: 16px; color: var(--text); }
.header-phone:hover { color: var(--red-light); }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.burger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: #0d0d0dfa;
  backdrop-filter: blur(6px);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.mobile-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-nav a { font-family: var(--font-head); text-transform: uppercase; font-size: 22px; letter-spacing: 1px; }
.mobile-nav .btn { margin-top: 12px; }

/* ==================== Hero ==================== */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 60px;
  padding-bottom: 60px;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(227,6,19,0.12), transparent 55%),
    linear-gradient(180deg, #0d0d0d 0%, #141414 100%);
}
.hero-sparks { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.6; }
.hero-content { position: relative; z-index: 1; max-width: 760px; }
.hero-content h1 { margin-bottom: 20px; }
.hero-content h1 .accent { display: block; }
.hero-content p { font-size: 18px; max-width: 600px; }
.hero-cta { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

.page-hero {
  padding: 160px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, #141414 0%, #0d0d0d 100%);
  border-bottom: 1px solid var(--border);
}
.page-hero p { max-width: 640px; margin: 0 auto; font-size: 17px; }

/* ==================== Cards ==================== */
.grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 32px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover {
  transform: translateY(-6px) scale(1.015);
  border-color: var(--red);
  box-shadow: 0 16px 40px rgba(227, 6, 19, 0.15);
}
.card-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: rgba(227,6,19,0.12);
  color: var(--red-light);
  margin-bottom: 18px;
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 { margin-bottom: 10px; }
.card p { margin-bottom: 0; font-size: 15px; }
.card-link { display: inline-block; margin-top: 14px; font-size: 14px; color: var(--red-light); font-family: var(--font-head); letter-spacing: 1px; text-transform: uppercase; }

/* ==================== Why us ==================== */
.why-grid { display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.why-item { display: flex; gap: 16px; }
.why-item .num {
  font-family: var(--font-head);
  font-size: 34px;
  color: var(--red);
  opacity: 0.5;
  line-height: 1;
}
.why-item h3 { margin-bottom: 6px; font-size: 17px; }
.why-item p { font-size: 14.5px; margin-bottom: 0; }

/* ==================== Portfolio grid & filters ==================== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-head);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-btn:hover { border-color: var(--red); color: var(--text); }
.filter-btn.active { background: var(--red); border-color: var(--red); color: #fff; }

.portfolio-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.preview-grid { display: grid; gap: 20px; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) { .preview-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .preview-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .preview-grid { grid-template-columns: 1fr; } }
.pf-item {
  display: block;
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  background: var(--bg-card);
  aspect-ratio: 4/3;
  transition: opacity 0.25s ease, transform 0.35s ease;
}
.pf-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.pf-item:hover img { transform: scale(1.08); }
.pf-item .pf-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.85) 100%);
  display: flex; align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.pf-item:hover .pf-overlay { opacity: 1; }
.pf-item .pf-overlay span { font-size: 14px; font-weight: 600; color: #fff; }
.pf-item.hide { display: none; }

/* ==================== Lightbox ==================== */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(5,5,5,0.94);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox-inner { max-width: 90vw; max-height: 82vh; text-align: center; }
.lightbox-inner img { max-width: 90vw; max-height: 70vh; margin: 0 auto; border-radius: 4px; }
.lightbox-caption { color: var(--text-dim); margin-top: 14px; font-size: 15px; }
.lightbox-close, .lightbox-nav {
  position: absolute;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  color: #fff;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 22px;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.lightbox-close:hover, .lightbox-nav:hover { background: var(--red); border-color: var(--red); }
.lightbox-close { top: 24px; right: 24px; }
.lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }

/* ==================== Counters (about page) ==================== */
.counters { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); text-align: center; }
.counter-item { padding: 28px 16px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-card); }
.counter-num { font-family: var(--font-head); font-size: 44px; color: var(--red-light); }
.counter-label { font-size: 14px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }

/* ==================== Steps (how we work) ==================== */
.steps { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.step { position: relative; padding: 26px 22px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-card); }
.step .step-num {
  position: absolute; top: -16px; left: 20px;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--red);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 15px;
}
.step h3 { margin-top: 10px; font-size: 16px; }
.step p { font-size: 14px; margin-bottom: 0; }

/* ==================== Service detail blocks ==================== */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.service-block:last-child { border-bottom: none; }
.service-block:nth-child(even) .service-media { order: 2; }
.service-media {
  aspect-ratio: 4/3;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--red);
  overflow: hidden;
}
.service-media svg { width: 96px; height: 96px; opacity: 0.85; }
.service-specs { list-style: none; padding: 0; margin: 18px 0; font-size: 14.5px; }
.service-specs li { padding: 8px 0; border-top: 1px solid var(--border); color: var(--text-dim); }
.service-specs li b { color: var(--text); font-weight: 600; }

/* ==================== CTA band ==================== */
.cta-band {
  text-align: center;
  background: linear-gradient(135deg, #1c1414, #140d0d);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-band h2 { margin-bottom: 12px; }
.cta-band p { max-width: 560px; margin: 0 auto 28px; }

/* ==================== Contacts ==================== */
.contacts-layout { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; align-items: start; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 22px; }
.contact-info-item .ci-icon {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 8px; background: rgba(227,6,19,0.12); color: var(--red-light);
  display: flex; align-items: center; justify-content: center;
}
.contact-info-item h4 { margin: 0 0 4px; font-size: 15px; text-transform: none; font-family: var(--font-body); font-weight: 600; }
.contact-info-item p { margin: 0; font-size: 15px; }
.contact-info-item a:hover { color: var(--red-light); }
.messenger-links { display: flex; gap: 12px; margin-top: 8px; }
.messenger-links a {
  padding: 8px 14px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.messenger-links a:hover { border-color: var(--red); color: var(--red-light); }

/* ==================== Forms ==================== */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 8px; color: var(--text-dim); }
.form-group input[type="text"],
.form-group input[type="tel"],
.form-group input[type="email"],
.form-group textarea,
.form-group input[type="file"] {
  width: 100%;
  padding: 13px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(227,6,19,0.15);
  outline: none;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-check { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-dim); margin-bottom: 18px; }
.form-check input { margin-top: 4px; }
.form-check a { color: var(--red-light); text-decoration: underline; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-msg { margin-top: 16px; padding: 14px 16px; border-radius: 6px; font-size: 14.5px; display: none; }
.form-msg.ok { display: block; background: rgba(52,168,83,0.12); color: #6fd48a; border: 1px solid rgba(52,168,83,0.3); }
.form-msg.err { display: block; background: rgba(227,6,19,0.1); color: #ff8080; border: 1px solid rgba(227,6,19,0.3); }
.field-error { color: #ff8080; font-size: 13px; margin-top: 6px; display: none; }
.form-group.has-error input, .form-group.has-error textarea { border-color: #ff4d4d; }
.form-group.has-error .field-error { display: block; }

/* ==================== Footer ==================== */
.site-footer { background: #0a0a0a; border-top: 1px solid var(--border); padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer-col h4 { font-family: var(--font-head); text-transform: uppercase; font-size: 15px; letter-spacing: 1px; margin-bottom: 16px; }
.footer-col p, .footer-col a { color: var(--text-dim); font-size: 14.5px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a:hover { color: var(--red-light); }
.footer-logo { height: 36px; margin-bottom: 16px; display: block; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 13px; color: #6b6b6b;
}
.footer-bottom a:hover { color: var(--red-light); }

/* ==================== Scroll to top ==================== */
.scroll-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 20px;
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  z-index: 90;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.scroll-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ==================== Floating contacts ==================== */
.floating-contacts {
  position: fixed;
  left: 24px; bottom: 24px;
  display: flex; flex-direction: column; gap: 12px;
  z-index: 90;
}
.floating-contacts a {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 8px 20px rgba(0,0,0,0.35);
}
.floating-contacts a:hover { transform: scale(1.08); border-color: var(--red); }
.floating-contacts svg { width: 22px; height: 22px; }

/* ==================== Reveal animation ==================== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; will-change: transform, opacity; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

/* ==================== Privacy page ==================== */
.policy-content h2 { margin-top: 36px; font-size: 22px; }
.policy-content p, .policy-content li { color: var(--text-dim); font-size: 15px; }

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
  .service-block { grid-template-columns: 1fr; }
  .service-block:nth-child(even) .service-media { order: 0; }
  .contacts-layout { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav, .header-phone { display: none; }
  .burger { display: flex; }
  section { padding: 56px 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 480px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 120px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .filters { gap: 8px; }
  .filter-btn { padding: 8px 14px; font-size: 12px; }
  .floating-contacts { left: 14px; bottom: 14px; }
  .scroll-top { right: 14px; bottom: 14px; }
}