/* ========================================
   Архитектура Эффективности — Corporate Website
   Color palette: Dark Navy #0a1628, Accent Orange #e85d04,
   Light: #f8f9fa, Text: #212529
   ======================================== */

:root {
  --primary: #0a1628;
  --primary-light: #1a2a42;
  --accent: #e85d04;
  --accent-hover: #d14903;
  --light: #f8f9fa;
  --text: #212529;
  --text-muted: #6c757d;
  --white: #ffffff;
  --border: #dee2e6;
  --shadow: 0 4px 20px rgba(10,22,40,0.15);
  --shadow-lg: 0 10px 40px rgba(10,22,40,0.2);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { text-decoration: none; color: inherit; transition: var(--transition); }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   HEADER & NAV
   ======================================== */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,22,40,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10,22,40,0.98);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 40px; height: 40px;
  background: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav { display: flex; align-items: center; gap: 32px; }

.nav a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.nav a:hover, .nav a.active {
  color: var(--white);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav a:hover::after, .nav a.active::after {
  width: 100%;
}

.header-cta {
  background: var(--accent);
  color: var(--white);
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.header-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========================================
   HERO
   ======================================== */

.hero {
  min-height: 100vh;
  background: var(--primary);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(232,93,4,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232,93,4,0.15);
  color: var(--accent);
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(232,93,4,0.3);
}

.hero h1 {
  color: var(--white);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

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

.hero-desc {
  color: rgba(255,255,255,0.7);
  font-size: 1.15rem;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-bottom: 40px;
}

.hero-stat {
  text-align: left;
}

.hero-stat-num {
  color: var(--accent);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
}

.hero-stat-label {
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
  margin-top: 4px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(232,93,4,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}

.hero-visual {
  position: relative;
}

.hero-visual-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.3);
  font-size: 4rem;
  border: 1px solid rgba(255,255,255,0.08);
}

/* ========================================
   SECTIONS COMMON
   ======================================== */

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--primary);
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.section-dark {
  background: var(--primary);
  color: var(--white);
}

.section-dark .section-title { color: var(--white); }
.section-dark .section-desc { color: rgba(255,255,255,0.6); }

/* ========================================
   PROBLEMS
   ======================================== */

.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.problem-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.problem-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.problem-icon {
  width: 48px; height: 48px;
  background: rgba(232,93,4,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.problem-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========================================
   SERVICES
   ======================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--accent);
  transform: scaleX(0);
  transition: var(--transition);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary);
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.service-price {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
}

.service-price span {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* ========================================
   PROCESS / STEPS
   ======================================== */

.steps {
  display: flex;
  gap: 24px;
  counter-reset: step;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 200px;
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  border: 1px solid rgba(255,255,255,0.05);
}

.step::before {
  counter-increment: step;
  content: '0' counter(step);
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(232,93,4,0.2);
  position: absolute;
  top: 16px; right: 24px;
}

.step h4 {
  color: var(--white);
  font-size: 1.1rem;
  margin-bottom: 8px;
  margin-top: 8px;
}

.step p {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
}

.step .step-price {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: 12px;
}

/* ========================================
   TEAM
   ======================================== */

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.team-card {
  text-align: center;
}

.team-photo {
  width: 160px; height: 160px;
  border-radius: 50%;
  background: var(--border);
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--text-muted);
  overflow: hidden;
}

.team-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.team-role {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.team-exp {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ========================================
   CASES
   ======================================== */

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.case-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.case-header {
  background: var(--primary);
  color: var(--white);
  padding: 24px;
}

.case-industry {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 4px;
}

.case-header h4 {
  font-size: 1.1rem;
  font-weight: 700;
}

.case-body {
  padding: 24px;
}

.case-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.case-metric:last-child { border-bottom: none; }

.case-metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.case-metric-values {
  display: flex;
  align-items: center;
  gap: 16px;
}

.case-before {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.case-after {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

/* ========================================
   BLOG
   ======================================== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.blog-img {
  width: 100%;
  height: 180px;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 2rem;
}

.blog-content {
  padding: 24px;
}

.blog-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.blog-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.blog-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========================================
   CONTACTS
   ======================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-icon {
  width: 48px; height: 48px;
  background: rgba(232,93,4,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item div strong {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-item div a,
.contact-item div span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232,93,4,0.1);
}

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

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
  background: var(--accent);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--white);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn {
  background: var(--white);
  color: var(--accent);
}

.cta-section .btn:hover {
  background: var(--light);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 24px;
}

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

.footer-brand {
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-col h5 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
}

/* ========================================
   PHILOSOPHY BLOCK
   ======================================== */

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}

.phil-card {
  padding: 32px;
}

.phil-card .phil-icon {
  width: 64px; height: 64px;
  background: rgba(232,93,4,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
}

.phil-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.phil-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
}

/* ========================================
   GUARANTEES
   ======================================== */

.guarantees-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.guarantee-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.guarantee-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.guarantee-icon {
  width: 64px; height: 64px;
  background: rgba(232,93,4,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
}

.guarantee-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}

.guarantee-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 992px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-stats { justify-content: center; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .philosophy-grid { grid-template-columns: 1fr; }
  .guarantees-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .mobile-menu-btn { display: block; }
  .header-cta { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .section { padding: 60px 0; }
  .section-title { font-size: 1.8rem; }
  .steps { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ========================================
   UTILITIES
   ======================================== */

.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }