/* ============================================
   WISEMFR Precision Tools - Russian Industrial Style
   Designed for B2B CNC Cutting Tools Market
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-dark: #1a1d23;
  --bg-card: #22262e;
  --bg-section: #2a2e38;
  --bg-footer: #14171c;
  --text-primary: #e8e8e8;
  --text-secondary: #a0a5b0;
  --text-muted: #6b7080;
  --accent-blue: #1e5fbb;
  --accent-blue-light: #3b82f6;
  --accent-blue-dark: #0f3a7a;
  --accent-orange: #f59e0b;
  --accent-green: #10b981;
  --border-color: #363a45;
  --border-light: #2e323c;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 6px;
  --radius-lg: 10px;
  --font-mono: 'Courier New', Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --max-width: 1280px;
  --header-h: 70px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-blue-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-orange); }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: 2.6rem; letter-spacing: -0.5px; }
h2 { font-size: 2rem; letter-spacing: -0.3px; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.1rem; }

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--accent-blue-light);
  border-radius: 2px;
}

.section-title p {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 1.05rem;
}

/* --- Language Attributes --- */
html[lang="ru"] [lang="zh"] { display: none !important; }
html[lang="zh"] [lang="ru"] { display: none !important; }
html:not([lang="ru"]):not([lang="zh"]) [lang="zh"] { display: none !important; }

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 29, 35, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-h);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-primary);
  letter-spacing: 1px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-blue);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 1.1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 8px 16px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.93rem;
  transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}

.lang-switch {
  display: flex;
  gap: 4px;
  margin-left: 16px;
  border-left: 1px solid var(--border-color);
  padding-left: 16px;
}

.lang-btn {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.2s;
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #fff;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2440 50%, var(--bg-dark) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(30,95,187,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 30%, rgba(16,185,129,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-content h1 span {
  color: var(--accent-blue-light);
}

.hero-content .hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  box-shadow: 0 4px 16px rgba(30,95,187,0.35);
}

.btn-primary:hover {
  background: var(--accent-blue-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(30,95,187,0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent-blue-light);
  color: var(--accent-blue-light);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  opacity: 0.92;
}

/* --- Stats Bar --- */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 32px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item .stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-blue-light);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-item .stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --- Category Cards --- */
.categories {
  padding: 80px 0;
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.cat-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-blue);
  box-shadow: 0 12px 40px rgba(30,95,187,0.15);
}

.cat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-blue-light);
  opacity: 0;
  transition: opacity 0.3s;
}

.cat-card:hover::before { opacity: 1; }

.cat-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: rgba(30,95,187,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.cat-card h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.cat-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* --- Products Showcase --- */
.products-showcase {
  padding: 80px 0;
  background: var(--bg-card);
}

.product-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.product-feature:last-child { margin-bottom: 0; }

.product-feature.reverse {
  direction: rtl;
}

.product-feature.reverse > * {
  direction: ltr;
}

.product-info h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.product-info .product-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 0.98rem;
}

.product-features-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.product-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.product-features-list li::before {
  content: '◆';
  color: var(--accent-blue-light);
  font-size: 0.6rem;
}

.product-image {
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-align: center;
}

.product-image img {
  max-height: 300px;
  object-fit: contain;
  margin: 0 auto;
}

/* --- Product Detail Page --- */
.product-detail-hero {
  padding: 60px 0;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2440 100%);
}

.product-detail-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.product-detail-hero .breadcrumb {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 24px;
}

.product-detail-hero .breadcrumb a { color: var(--text-secondary); }

.spec-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table th {
  background: var(--accent-blue-dark);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.spec-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}

.spec-table tr:hover td {
  background: rgba(30,95,187,0.06);
  color: var(--text-primary);
}

/* --- About Page --- */
.about-hero {
  padding: 80px 0;
  text-align: center;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding: 60px 0;
}

.about-text h3 {
  margin-bottom: 16px;
  color: var(--accent-blue-light);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.value-card .value-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.value-card h4 {
  margin-bottom: 6px;
}

.value-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* --- Contact Page --- */
.contact-section {
  padding: 60px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-item .ci-icon {
  width: 44px;
  height: 44px;
  background: rgba(30,95,187,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item .ci-text h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.contact-item .ci-text p,
.contact-item .ci-text a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-form h3 {
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.93rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-blue-light);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--accent-blue);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.form-submit:hover {
  background: var(--accent-blue-light);
}

/* --- Blog --- */
.blog-section {
  padding: 60px 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s;
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow);
}

.blog-card-img {
  height: 180px;
  background: var(--bg-section);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--text-muted);
}

.blog-card-body {
  padding: 20px;
}

.blog-card-body .blog-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.blog-card-body h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

.blog-card-body p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.6;
}

/* --- Telegram CTA --- */
.telegram-cta {
  padding: 60px 0;
  background: linear-gradient(135deg, #1e5fbb 0%, #0f3a7a 100%);
  text-align: center;
  border-radius: var(--radius-lg);
  margin: 60px auto;
  max-width: var(--max-width);
}

.telegram-cta h2 {
  color: #fff;
  margin-bottom: 12px;
}

.telegram-cta p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.telegram-cta .btn {
  background: #fff;
  color: var(--accent-blue);
  font-weight: 700;
}

.telegram-cta .btn:hover {
  background: #e8e8e8;
  color: var(--accent-blue-dark);
}

/* --- Footer --- */
.footer {
  background: var(--bg-footer);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-col h4 {
  color: var(--text-primary);
  margin-bottom: 16px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent-blue-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- Page Header (inner pages) --- */
.page-header {
  padding: 48px 0;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2440 100%);
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* --- Not Found --- */
.not-found {
  padding: 100px 0;
  text-align: center;
}

.not-found h1 {
  font-size: 6rem;
  color: var(--accent-blue-light);
  margin-bottom: 16px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.7rem; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content .hero-sub {
    margin: 0 auto 32px;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-visual { display: none; }

  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .product-feature { grid-template-columns: 1fr; gap: 32px; }
  .about-content { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }

  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 16px;
    gap: 4px;
  }

  .menu-toggle { display: block; }
  .lang-switch { border-left: none; padding-left: 0; margin-left: 0; }

  .cat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .hero-content h1 { font-size: 2rem; }
  .stat-item .stat-num { font-size: 1.6rem; }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* --- Utility --- */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }