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

:root {
  --primary: #1E40AF;
  --primary-dark: #1E3A8A;
  --primary-light: #3B82F6;
  --cta: #F97316;
  --cta-hover: #EA580C;
  --bg: #FFFFFF;
  --bg-alt: #EFF6FF;
  --bg-dark: #0F172A;
  --text: #1E293B;
  --text-muted: #475569;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1), 0 6px 10px rgba(0,0,0,0.08);
  --transition: 200ms ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-dark);
}

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

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

ul {
  list-style: none;
}

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--cta);
  color: #fff;
  border-color: var(--cta);
}
.btn-primary:hover {
  background: var(--cta-hover);
  border-color: var(--cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--bg-alt);
}

.btn-ghost-light {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
.btn-ghost-light:hover {
  background: rgba(255,255,255,0.25);
}

.btn-cta {
  background: #fff;
  color: var(--primary-dark);
  border-color: #fff;
  font-size: 18px;
}
.btn-cta:hover {
  background: var(--bg-alt);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255,255,255,0.3);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 300ms ease;
}

.navbar.scrolled {
  top: 8px;
  box-shadow: var(--shadow-md);
  background: rgba(255,255,255,0.95);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 22px;
  color: var(--primary-dark);
  cursor: pointer;
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--cta);
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
}

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

.nav-links a:hover {
  color: var(--primary);
}

.nav-links a:hover::after {
  width: 100%;
}

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

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.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;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--bg-alt) 0%, #DBEAFE 50%, #BFDBFE 100%);
  z-index: -2;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(30,64,175,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30,64,175,0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  margin-bottom: 20px;
  color: var(--primary-dark);
}

.highlight {
  color: var(--cta);
}

.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat strong {
  font-family: 'Poppins', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-dark);
}

.stat span {
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== SECTIONS ===== */
.section {
  padding: 96px 0;
}

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

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

.section-header h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 550px;
  margin: 0 auto;
}

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

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 300ms ease;
  cursor: pointer;
}

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

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: background var(--transition);
}

.service-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

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

.service-card:hover .service-icon svg {
  color: #fff;
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text);
}

.service-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

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

.filter-btn {
  font-family: 'Open Sans', sans-serif;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

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

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

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity 300ms ease;
}

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

.portfolio-overlay h3 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 4px;
}

.portfolio-overlay p {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
}

.portfolio-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
  background: var(--bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
}

.portfolio-placeholder svg {
  width: 64px;
  height: 64px;
  color: var(--text-light);
  margin: 0 auto 16px;
}

.portfolio-placeholder p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 20px;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(15,23,42,0.95);
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
  z-index: 2;
  line-height: 1;
  padding: 4px;
  opacity: 0.7;
  transition: opacity var(--transition);
}

.lightbox-close:hover { opacity: 1; }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition);
  z-index: 2;
}

.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-prev svg,
.lightbox-next svg {
  width: 24px;
  height: 24px;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 85vh;
  text-align: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-sm);
  margin: 0 auto;
}

.lightbox-caption {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  margin-top: 12px;
}

/* ===== ADVANTAGES ===== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.advantage {
  text-align: center;
}

.advantage-num {
  font-family: 'Poppins', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: rgba(30,64,175,0.1);
  line-height: 1;
  margin-bottom: 12px;
}

.advantage h3 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}

.advantage p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== REVIEWS ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 300ms ease;
}

.review-card:hover {
  box-shadow: var(--shadow-md);
}

.review-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
}

.review-stars svg {
  width: 18px;
  height: 18px;
  color: #F59E0B;
}

.review-text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--primary);
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-author strong {
  display: block;
  font-size: 14px;
  color: var(--text);
}

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

/* ===== PRICING ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.price-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  transition: all 300ms ease;
}

.price-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.price-card-featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}

.price-card-featured:hover {
  transform: scale(1.03) translateY(-4px);
}

.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 20px;
  border-radius: 100px;
  white-space: nowrap;
}

.price-card-header h3 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 4px;
}

.price-card-header p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.price-amount {
  font-family: 'Poppins', sans-serif;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 24px;
}

.price-amount span {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
}

.price-features {
  margin-bottom: 28px;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.price-features li:last-child {
  border-bottom: none;
}

.price-features svg {
  width: 18px;
  height: 18px;
  color: #10B981;
  flex-shrink: 0;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  padding: 80px 0;
}

.cta-inner {
  text-align: center;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(24px, 3vw, 36px);
  margin-bottom: 12px;
}

.cta-inner p {
  color: rgba(255,255,255,0.8);
  font-size: 17px;
  max-width: 500px;
  margin: 0 auto 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== CONTACT ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: 'Open Sans', sans-serif;
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,64,175,0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-note {
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}

.info-card svg {
  width: 22px;
  height: 22px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-card strong {
  display: block;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 2px;
}

.info-card a,
.info-card span {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
}

.info-card a:hover {
  color: var(--primary);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-dark);
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.footer-brand p {
  font-size: 14px;
  color: var(--text-light);
  max-width: 300px;
  line-height: 1.6;
}

.footer-links h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-light);
  padding: 4px 0;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-light);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

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

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

  .price-card-featured {
    transform: none;
  }
  .price-card-featured:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 768px) {
  .navbar {
    top: 8px;
    left: 8px;
    right: 8px;
    border-radius: 12px;
  }

  .navbar-inner .btn-outline { display: none; }

  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    flex-direction: column;
    gap: 0;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .nav-links a:hover {
    background: var(--bg-alt);
  }

  .nav-links a::after {
    display: none;
  }

  .burger {
    display: flex;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-sub {
    font-size: 16px;
  }

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

  .stat strong {
    font-size: 22px;
  }

  .section {
    padding: 64px 0;
  }

  .services-grid,
  .reviews-grid,
  .pricing-grid,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .price-amount {
    font-size: 28px;
  }
}

@media (max-width: 375px) {
  .container {
    padding: 0 16px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }
}