/* ========================================
   Плиточник.НСК — Design System & Styles
   ======================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Colors — derived from logo */
  --c-primary: #3B82C4;
  --c-primary-dark: #2A6BA8;
  --c-primary-light: #5A9BD5;
  --c-primary-alpha: rgba(59, 130, 196, 0.12);

  --c-dark: #1A1F25;
  --c-charcoal: #2D3436;
  --c-slate: #4A5568;
  --c-grey: #636E72;
  --c-grey-light: #A0ADB3;
  --c-beige: #C8B6A6;
  --c-beige-light: #E8DDD3;

  --c-bg: #F8F9FA;
  --c-bg-alt: #F0F2F5;
  --c-white: #FFFFFF;
  --c-border: #E2E8F0;

  /* Typography */
  --f-heading: 'Montserrat', sans-serif;
  --f-body: 'Inter', sans-serif;

  /* Sizes */
  --max-width: 1200px;
  --header-height: 72px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.12);

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Border radius */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--f-body);
  color: var(--c-charcoal);
  background: var(--c-white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--c-primary-dark);
}

ul { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

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

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--c-primary);
  border-radius: 2px;
}

.section-header p {
  color: var(--c-grey);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
  margin-top: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--f-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--c-primary);
  color: var(--c-white);
  box-shadow: 0 4px 14px rgba(59, 130, 196, 0.35);
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  color: var(--c-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 196, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--c-white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: var(--c-white);
  color: var(--c-primary);
  border-color: var(--c-white);
}

.btn-dark {
  background: var(--c-charcoal);
  color: var(--c-white);
}
.btn-dark:hover {
  background: var(--c-dark);
  color: var(--c-white);
  transform: translateY(-2px);
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ========================================
   HEADER
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo img {
  height: 48px;
  width: auto;
  border-radius: 4px;
}

.header-logo span {
  font-family: var(--f-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--c-white);
  transition: color var(--transition);
}

.header.scrolled .header-logo span {
  color: var(--c-dark);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav a:hover {
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.12);
}

.header.scrolled .nav a {
  color: var(--c-grey);
}

.header.scrolled .nav a:hover {
  color: var(--c-primary);
  background: var(--c-primary-alpha);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-phone {
  font-family: var(--f-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--c-white);
  transition: color var(--transition);
}

.header.scrolled .header-phone {
  color: var(--c-dark);
}

.header-btn {
  padding: 10px 24px;
  font-size: 0.85rem;
  background: var(--c-primary);
  color: var(--c-white);
  border-radius: var(--radius-sm);
  font-family: var(--f-heading);
  font-weight: 600;
  transition: all var(--transition);
}

.header-btn:hover {
  background: var(--c-primary-dark);
  color: var(--c-white);
  transform: translateY(-1px);
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1100;
}

.burger span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: var(--c-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.header.scrolled .burger span {
  background: var(--c-dark);
}

.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 31, 37, 0.88) 0%,
    rgba(45, 52, 54, 0.72) 50%,
    rgba(26, 31, 37, 0.82) 100%
  );
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 680px;
  padding-top: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(59, 130, 196, 0.15);
  border: 1px solid rgba(59, 130, 196, 0.3);
  border-radius: 50px;
  margin-bottom: 28px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-primary-light);
  backdrop-filter: blur(4px);
}

.hero h1 {
  color: var(--c-white);
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 span {
  color: var(--c-primary-light);
}

.hero-text {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 520px;
  line-height: 1.8;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

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

.hero-stat-number {
  font-family: var(--f-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--c-white);
  line-height: 1;
  margin-bottom: 6px;
}

.hero-stat-number span {
  color: var(--c-primary-light);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ========================================
   ADVANTAGES
   ======================================== */
.advantages {
  background: var(--c-white);
}

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

.advantage-card {
  padding: 36px 28px;
  background: var(--c-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.advantage-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-alpha);
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: var(--c-primary);
  transition: all var(--transition);
}

.advantage-card:hover .advantage-icon {
  background: var(--c-primary);
  color: var(--c-white);
}

.advantage-card h3 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--c-grey);
  line-height: 1.6;
}

/* ========================================
   SERVICES
   ======================================== */
.services {
  background: var(--c-bg);
}

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

.service-card {
  padding: 36px 30px;
  background: var(--c-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary);
}

.service-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c-primary-alpha), rgba(59, 130, 196, 0.06));
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  transition: all var(--transition);
}

.service-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--c-primary);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card:hover .service-icon {
  background: var(--c-primary);
}

.service-card:hover .service-icon svg {
  stroke: var(--c-white);
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--c-grey);
  line-height: 1.7;
}

.service-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 12px;
  background: var(--c-primary-alpha);
  color: var(--c-primary);
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 50px;
}

/* ========================================
   PORTFOLIO
   ======================================== */
.portfolio {
  background: var(--c-white);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 50px;
  font-family: var(--f-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-grey);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: var(--c-white);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(26, 31, 37, 0.85) 0%,
    rgba(26, 31, 37, 0.2) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio-item:hover img {
  transform: scale(1.08);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay h3 {
  color: var(--c-white);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.portfolio-overlay p {
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  backdrop-filter: blur(8px);
}

.lightbox.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox img {
  max-width: 85vw;
  max-height: 85vh;
  border-radius: var(--radius);
  object-fit: contain;
  transform: scale(0.9);
  transition: transform var(--transition);
}

.lightbox.active img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border: none;
  border-radius: 50%;
  color: var(--c-white);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.25);
}

/* ========================================
   PROCESS / STEPS
   ======================================== */
.process {
  background: var(--c-dark);
  color: var(--c-white);
}

.process .section-header h2 {
  color: var(--c-white);
}

.process .section-header h2::after {
  background: var(--c-primary-light);
}

.process .section-header p {
  color: rgba(255,255,255,0.5);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: linear-gradient(to right, var(--c-primary), var(--c-primary-light));
  opacity: 0.3;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step-number {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 196, 0.12);
  border: 2px solid rgba(59, 130, 196, 0.3);
  border-radius: 50%;
  font-family: var(--f-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--c-primary-light);
  transition: all var(--transition);
}

.process-step:hover .process-step-number {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: var(--c-white);
  transform: scale(1.1);
}

.process-step h3 {
  color: var(--c-white);
  font-size: 1rem;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.5;
}

/* ========================================
   ABOUT
   ======================================== */
.about {
  background: var(--c-white);
}

.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h2 {
  margin-bottom: 20px;
}

.about-content h2::after {
  display: none;
}

.about-content > p {
  color: var(--c-grey);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 28px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.about-feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-alpha);
  border-radius: var(--radius-sm);
  color: var(--c-primary);
  font-size: 1.1rem;
}

.about-feature div h4 {
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.about-feature div p {
  font-size: 0.85rem;
  color: var(--c-grey);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.about-stat {
  padding: 32px 24px;
  background: var(--c-bg);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}

.about-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-primary);
}

.about-stat-number {
  font-family: var(--f-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--c-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.about-stat-label {
  font-size: 0.88rem;
  color: var(--c-grey);
  font-weight: 500;
}

/* ========================================
   REVIEWS
   ======================================== */
.reviews {
  background: var(--c-bg);
}

.reviews-slider {
  position: relative;
  overflow: hidden;
}

.reviews-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.review-card {
  flex: 0 0 100%;
  max-width: 100%;
  padding: 0 12px;
}

.review-card-inner {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid var(--c-border);
  position: relative;
}

.review-card-inner::before {
  content: '"';
  position: absolute;
  top: 20px;
  right: 32px;
  font-family: var(--f-heading);
  font-size: 5rem;
  color: var(--c-primary-alpha);
  line-height: 1;
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: #F59E0B;
  font-size: 1.1rem;
}

.review-text {
  font-size: 1.05rem;
  color: var(--c-charcoal);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-white);
  font-family: var(--f-heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.review-author-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
}

.review-author-info p {
  font-size: 0.82rem;
  color: var(--c-grey);
}

.reviews-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

.review-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--c-charcoal);
  transition: all var(--transition);
}

.review-btn:hover {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: var(--c-white);
}

.reviews-dots {
  display: flex;
  gap: 8px;
}

.reviews-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-border);
  cursor: pointer;
  transition: all var(--transition);
}

.reviews-dot.active {
  background: var(--c-primary);
  transform: scale(1.3);
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
  background: var(--c-white);
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info h3 {
  font-size: 1.3rem;
  margin-bottom: 4px;
}

.contact-info > p {
  color: var(--c-grey);
  font-size: 0.95rem;
}

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

.contact-item-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-alpha);
  border-radius: var(--radius);
  color: var(--c-primary);
  font-size: 1.2rem;
}

.contact-item-text h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item-text p,
.contact-item-text a {
  font-size: 0.95rem;
  color: var(--c-grey);
}

.contact-item-text a:hover {
  color: var(--c-primary);
}

.contact-form {
  background: var(--c-bg);
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-charcoal);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--f-body);
  font-size: 0.95rem;
  color: var(--c-charcoal);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-alpha);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--c-grey-light);
}

.contact-form .btn {
  width: 100%;
  justify-content: center;
}

.form-note {
  margin-top: 12px;
  font-size: 0.78rem;
  color: var(--c-grey-light);
  text-align: center;
}

/* Contact map */
.contact-map {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-border);
  height: 300px;
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--c-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-header img {
  height: 40px;
  border-radius: 4px;
}

.footer-brand-header span {
  font-family: var(--f-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-white);
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
}

.footer-col h4 {
  color: var(--c-white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
  font-family: var(--f-heading);
}

.footer-col a {
  display: block;
  padding: 5px 0;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  transition: all var(--transition);
}

.footer-col a:hover {
  color: var(--c-primary-light);
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.3);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .process-steps::before {
    display: none;
  }

  .about-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--c-white);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 40px;
    gap: 4px;
    transition: right var(--transition);
    box-shadow: var(--shadow-xl);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    color: var(--c-charcoal);
    font-size: 1.05rem;
    padding: 12px 16px;
    width: 100%;
  }

  .nav a:hover {
    color: var(--c-primary);
    background: var(--c-primary-alpha);
  }

  .burger {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .hero-content {
    padding-top: 20px;
  }

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  h1 { font-size: 1.8rem; }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-stat-number {
    font-size: 1.6rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 24px;
  }
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}