/* ===== APPLE DESIGN SYSTEM ===== */
:root {
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  --color-bg: #fbfbfd;
  --color-white: #ffffff;
  --color-surface: #f5f5f7;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-black: #000000;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 52px;
}

body {
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.47;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.022em;
}

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

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

a:hover {
  opacity: 0.8;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

.section {
  padding: 120px 0;
}

.section-alt {
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.003em;
  line-height: 1.08;
  max-width: 680px;
  margin: 0 auto;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(251, 251, 253, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

.header.scrolled {
  background: rgba(251, 251, 253, 0.92);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--color-text);
}

.logo:hover {
  opacity: 0.9;
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text);
  opacity: 0.8;
  position: relative;
  padding: 0;
  transition: opacity var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition), left var(--transition);
}

.nav-link:hover {
  opacity: 1;
  color: var(--color-text);
}

.nav-link.active {
  opacity: 1;
  color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

.header.scrolled .nav-link {
  color: var(--color-text);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.header.scrolled .nav-toggle span {
  background: var(--color-text);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font);
  font-size: 17px;
  font-weight: 400;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: -0.022em;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: none;
  padding: 12px 0;
}

.btn-outline:hover {
  opacity: 0.8;
}

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

.btn-white:hover {
  background: rgba(255, 255, 255, 0.9);
  opacity: 1;
}

.btn-outline-white {
  background: transparent;
  color: rgba(255, 255, 255, 0.9);
  border: none;
}

.btn-outline-white:hover {
  color: var(--color-white);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 980px;
}

.btn-sm:hover {
  background: var(--color-accent-hover);
  opacity: 1;
}

.btn-full {
  width: 100%;
}

/* ===== HERO ===== */
.hero {
  padding: 180px 0 120px;
  position: relative;
  overflow: hidden;
  background: var(--color-black);
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('images/hero-bg.jpg') center/cover no-repeat;
  opacity: 0.35;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

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

.hero-tagline {
  font-size: 24px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: -0.015em;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.hero-title {
  font-family: var(--font);
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin-bottom: 20px;
}

.hero-description {
  font-size: 21px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.7);
  margin: 0 auto 36px;
  max-width: 600px;
  line-height: 1.38;
  letter-spacing: 0.011em;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border: none;
  font-size: 17px;
  padding: 12px 28px;
}

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

.hero .btn-outline {
  color: var(--color-accent);
  padding: 12px 0;
  border: none;
  font-size: 17px;
}

.hero-visual {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.hero-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 32px 40px;
  text-align: center;
  transition: background var(--transition);
  min-width: 180px;
}

.hero-card:hover {
  background: rgba(255, 255, 255, 0.12);
}

.hero-card:first-child {
  grid-column: unset;
}

.hero-card-icon {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  justify-content: center;
}

.hero-card-icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

.hero-card h3 {
  font-family: var(--font);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.015em;
  margin-bottom: 4px;
}

.hero-card p {
  font-size: 13px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content p {
  margin-bottom: 20px;
  font-size: 17px;
  line-height: 1.47;
  color: var(--color-text-secondary);
  letter-spacing: -0.022em;
}

.about-stats {
  display: flex;
  gap: 48px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border-light);
}

.stat-number {
  display: block;
  font-family: var(--font);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.015em;
  line-height: 1.08;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-tertiary);
  letter-spacing: 0;
  margin-top: 4px;
}

.about-image-placeholder {
  background: var(--color-surface);
  border-radius: 28px;
  padding: 100px 40px;
  text-align: center;
}

.placeholder-icon {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  color: var(--color-text-tertiary);
}

.placeholder-icon svg {
  width: 56px;
  height: 56px;
  stroke-width: 1;
  stroke: var(--color-text-tertiary);
}

.about-image-placeholder p {
  font-size: 17px;
  color: var(--color-text-tertiary);
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--color-white);
  border-radius: 20px;
  padding: 40px 32px;
  transition: transform var(--transition-slow);
  border: none;
  box-shadow: none;
}

.service-card:hover {
  transform: scale(1.02);
}

.service-icon {
  margin-bottom: 20px;
  width: 48px;
  height: 48px;
  background: var(--color-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.service-icon svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.5;
}

.service-card h3 {
  font-family: var(--font);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.003em;
  margin-bottom: 8px;
  line-height: 1.17;
}

.service-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.47;
  letter-spacing: -0.022em;
}

/* ===== PRODUCTS ===== */
.product-filters {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  background: var(--color-surface);
  border-radius: 980px;
  padding: 4px;
  display: inline-flex;
  margin-left: auto;
  margin-right: auto;
}

.section-header + .product-filters {
  display: flex;
  justify-content: center;
}

.product-filters {
  display: flex;
  justify-content: center;
}

.filter-btn {
  padding: 8px 20px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  border: none;
  border-radius: 980px;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text-secondary);
}

.filter-btn:hover {
  color: var(--color-text);
}

.filter-btn.active {
  background: var(--color-white);
  color: var(--color-text);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

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

.product-card {
  background: var(--color-surface);
  border-radius: 20px;
  overflow: hidden;
  border: none;
  box-shadow: none;
  transition: transform var(--transition-slow);
}

.product-card:hover {
  transform: scale(1.02);
}

.product-card.hidden {
  display: none;
}

.product-image {
  position: relative;
  background: var(--color-surface);
  padding: 48px;
  text-align: center;
}

.product-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 980px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.product-placeholder {
  display: flex;
  justify-content: center;
  color: var(--color-text-tertiary);
}

.product-placeholder svg {
  width: 48px;
  height: 48px;
  stroke-width: 1;
}

.product-info {
  padding: 24px;
}

.product-category {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.product-info h4 {
  font-family: var(--font);
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
  margin: 6px 0;
  letter-spacing: -0.003em;
}

.product-info p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.43;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.product-price {
  font-weight: 600;
  color: var(--color-text);
  font-size: 17px;
  letter-spacing: -0.022em;
}

/* ===== TESTIMONIALS ===== */
.testimonials-slider {
  max-width: 720px;
  margin: 0 auto;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.testimonial-card {
  min-width: 100%;
  padding: 0 20px;
  text-align: center;
}

.testimonial-stars {
  color: #ff9500;
  display: flex;
  justify-content: center;
  gap: 2px;
  margin-bottom: 28px;
}

.testimonial-stars svg {
  width: 16px;
  height: 16px;
  fill: #ff9500;
}

.testimonial-text {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.29;
  color: var(--color-text);
  margin-bottom: 32px;
  font-style: normal;
  letter-spacing: -0.003em;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.testimonial-author strong {
  display: block;
  color: var(--color-text);
  font-size: 15px;
  font-weight: 600;
}

.testimonial-author span {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-btn svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.slider-btn:hover {
  background: var(--color-border);
}

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

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: background var(--transition);
}

.slider-dot.active {
  background: var(--color-text);
}

/* ===== CTA BANNER ===== */
.cta-banner {
  background: var(--color-surface);
  padding: 100px 0;
  text-align: center;
}

.cta-content h2 {
  font-family: var(--font);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.003em;
  line-height: 1.08;
}

.cta-content p {
  color: var(--color-text-secondary);
  font-size: 21px;
  margin-bottom: 28px;
  letter-spacing: 0.011em;
}

.cta-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.cta-banner .btn-white:hover {
  background: var(--color-accent-hover);
  opacity: 1;
}

.cta-banner .btn-outline-white {
  color: var(--color-accent);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.contact-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.contact-item p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.47;
}

.contact-socials {
  display: flex;
  gap: 8px;
  margin-top: 24px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.social-link svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
}

.social-link:hover {
  background: var(--color-text);
  color: var(--color-white);
  opacity: 1;
}

.contact-form {
  background: var(--color-surface);
  padding: 40px;
  border-radius: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 17px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  letter-spacing: -0.022em;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.15);
}

.form-group textarea {
  resize: vertical;
}

.contact-form .btn-primary {
  margin-top: 4px;
  padding: 14px 28px;
  font-size: 17px;
  border-radius: 12px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface);
  padding: 48px 0 0;
  color: var(--color-text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border-light);
}

.footer-brand .logo-img {
  height: 44px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.47;
  color: var(--color-text-secondary);
}

.footer-links h4 {
  color: var(--color-text);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.footer-links a,
.footer-links p {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  line-height: 1.47;
}

.footer-links a:hover {
  color: var(--color-text);
  opacity: 1;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-tertiary);
}

/* ===== ANIMATIONS ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1), transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-content {
    text-align: center;
  }

  .hero-visual {
    flex-wrap: wrap;
    justify-content: center;
  }

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

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

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

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

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

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .nav {
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    background: rgba(251, 251, 253, 0.97);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column;
    padding: 20px 22px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border-light);
    transform: translateY(-120%);
    transition: transform var(--transition);
  }

  .nav.open {
    transform: translateY(0);
  }

  .nav.open .nav-link {
    color: var(--color-text);
    display: block;
    padding: 10px 0;
    font-size: 17px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: clamp(36px, 10vw, 56px);
  }

  .hero-description {
    font-size: 17px;
  }

  .hero-visual {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-card {
    min-width: unset;
  }

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

  .about-stats {
    flex-direction: column;
    gap: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .testimonial-text {
    font-size: 21px;
  }

  .cta-banner {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .contact-form {
    padding: 24px;
  }
}