/* ===========================================================
   WebSale — дизайн-токены
   Тема: тёмная, витрина готовых сайтов с ограниченным тиражом
   Signature-элемент: карточки-превью в виде окна браузера +
   индикатор остатка тиража (продано / доступно)
   =========================================================== */

:root {
  --bg-0: #0a0b14;
  --bg-1: #121325;
  --bg-2: #171933;
  --card: #14152b;
  --border: #272a4a;

  --text-main: #f5f5fa;
  --text-muted: #9497b8;

  --blue: #4b3cff;
  --violet: #b83bf5;
  --cyan: #33e0e0;
  --amber: #ffb020;
  --coral: #ff5f7a;

  --gradient-main: linear-gradient(135deg, var(--blue) 0%, var(--violet) 100%);
  --gradient-glow: radial-gradient(circle at 30% 20%, rgba(75,60,255,0.32), transparent 55%),
                    radial-gradient(circle at 75% 60%, rgba(184,59,245,0.28), transparent 55%);

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;

  --shadow-card: 0 20px 50px rgba(5, 6, 20, 0.5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; }

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

.section-sub {
  max-width: 560px;
  margin-bottom: 40px;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-accent {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 8px 24px rgba(122, 90, 255, 0.35);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(122, 90, 255, 0.5); }
.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--violet); background: rgba(155,77,255,0.08); }
.btn-small { padding: 10px 18px; font-size: 0.85rem; }
.btn-full { width: 100%; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(10, 12, 23, 0.75);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { font-size: 0.95rem; color: var(--text-muted); transition: color 0.2s; }
.main-nav a:hover { color: var(--text-main); }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.burger span { width: 24px; height: 2px; background: var(--text-main); border-radius: 2px; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: 18px;
}
.hero-sub { font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------------- Advantages ---------------- */
.advantages { padding: 60px 0; }
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advantage-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.advantage-card:hover { transform: translateY(-4px); border-color: var(--violet); }
.advantage-icon { font-size: 1.8rem; margin-bottom: 12px; }
.advantage-card h3 { margin-bottom: 8px; }
.advantage-card p { margin: 0; font-size: 0.92rem; }

/* ---------------- Catalog ---------------- */
.catalog { padding: 80px 0; }
.filter-tabs { display: flex; gap: 10px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.filter-btn:hover { color: var(--text-main); }
.filter-btn.active { background: var(--gradient-main); color: #fff; border-color: transparent; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); }
.product-thumb { display: block; position: relative; flex-shrink: 0; }

/* Индикатор тиража: осталось / продано */
.stock-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(6px);
}
.stock-badge-available { background: rgba(20, 22, 40, 0.7); border: 1px solid var(--border); color: var(--text-main); }
.stock-badge-low { background: rgba(255, 176, 32, 0.16); border: 1px solid var(--amber); color: var(--amber); }
.stock-badge-sold { background: rgba(255, 95, 122, 0.16); border: 1px solid var(--coral); color: var(--coral); }
.stock-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.product-card.is-sold-out .browser-frame img,
.product-card.is-sold-out .thumb-placeholder { filter: grayscale(0.6); opacity: 0.55; }
.product-card.is-sold-out .product-body h3 a { color: var(--text-muted); }

.stock-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 10px 0 18px;
}
.stock-track {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: var(--bg-2);
  overflow: hidden;
}
.stock-fill { height: 100%; border-radius: 999px; background: var(--gradient-main); }
.stock-fill.is-low { background: var(--amber); }
.stock-fill.is-sold { background: var(--coral); }

/* Signature element: browser-window frame around every screenshot */
.browser-frame {
  background: var(--bg-2);
  border-radius: 0;
}
.browser-bar {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  background: #10122480;
}
.browser-bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--border); }
.browser-bar span:nth-child(1) { background: #ff5f57; }
.browser-bar span:nth-child(2) { background: #febc2e; }
.browser-bar span:nth-child(3) { background: #28c840; }
.browser-frame img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.thumb-placeholder {
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 1.1rem;
  background: linear-gradient(135deg, rgba(79,107,255,0.12), rgba(155,77,255,0.12));
}
.thumb-placeholder.large { aspect-ratio: 16/10; font-size: 1.4rem; }

.product-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.product-category {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 8px;
}
.product-body h3 { margin-bottom: 8px; }
.product-body h3 a:hover { color: var(--violet); }
.product-body p {
  font-size: 0.9rem;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.product-price { font-weight: 700; font-size: 1.05rem; }

/* ---------------- How-to steps ---------------- */
.how-to { padding: 80px 0; background: var(--bg-1); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px;
}
.step-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--violet);
  display: block;
  margin-bottom: 10px;
}
.step-card h3 { margin-bottom: 8px; font-size: 1.05rem; }
.step-card p { margin: 0; font-size: 0.88rem; }

/* ---------------- Contact form ---------------- */
.contact-section { padding: 90px 0; }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.contact-text h2 { margin-bottom: 14px; }

.order-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label { font-size: 0.85rem; color: var(--text-muted); }
.form-row input,
.form-row select,
.form-row textarea {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus { border-color: var(--violet); }
.form-errors {
  background: rgba(255, 95, 87, 0.1);
  border: 1px solid #ff5f57;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}
.form-errors p { color: #ff9a94; margin: 0; font-size: 0.88rem; }

/* ---------------- Product page ---------------- */
.product-page { padding: 130px 0 60px; }
.product-page-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}
.product-gallery-main img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.gallery-thumb-btn {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  padding: 0;
  cursor: pointer;
  width: 80px;
  height: 56px;
  background: none;
}
.gallery-thumb-btn img { width: 100%; height: 100%; object-fit: cover; }

.product-info { position: sticky; top: 100px; }
.product-price-big { font-size: 1.6rem; font-weight: 700; color: var(--text-main); }
.product-description { margin: 20px 0; }
.order-open-btn { margin-top: 20px; }

/* ---------------- Thank you / legal ---------------- */
.thanks-section { padding: 160px 0; text-align: center; }
.thanks-inner { max-width: 460px; margin: 0 auto; }
.thanks-icon {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}
.legal-section { padding: 140px 0 80px; max-width: 760px; margin: 0 auto; }

/* ---------------- Footer ---------------- */
.site-footer { background: var(--bg-1); border-top: 1px solid var(--border); padding: 60px 0 0; margin-top: 60px; }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
.footer-brand p { font-size: 0.88rem; margin-top: 12px; }
.footer-col h4 { font-size: 0.9rem; margin-bottom: 12px; color: var(--text-main); }
.footer-col p, .footer-col a { font-size: 0.88rem; }
.social-links { display: flex; flex-direction: column; gap: 8px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------------- Modal (order dialog from product cards) ---------------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5,6,16,0.75);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: none; border: none; color: var(--text-muted);
  font-size: 1.4rem; cursor: pointer; line-height: 1;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 992px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-inner, .product-page-inner { grid-template-columns: 1fr; }
  .product-info { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .burger { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-1);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .hero { padding: 110px 0 70px; }
}

@media (max-width: 576px) {
  .advantages-grid, .products-grid, .steps-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .order-form { padding: 22px; }
}