:root {
  --primary: #ff9800;
  --primary-dark: #f57c00;
  --primary-light: #ffb74d;
  --grey-dark: #424242;
  --grey-mid: #757575;
  --grey-light: #f5f5f5;
  --white: #ffffff;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-hover: 0 4px 16px rgba(255, 152, 0, 0.2);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: var(--white);
  color: var(--grey-dark);
  line-height: 1.6;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
header {
  border-bottom: 3px solid var(--primary);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 0.03em;
  font-size: 1.15rem;
}

nav a {
  margin-left: 1rem;
  text-decoration: none;
  color: var(--grey-dark);
  font-size: 0.95rem;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  transition: all 0.3s ease;
  font-weight: 500;
}

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

/* Hero Banner */
.hero-banner {
  background-image: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.5)), 
                    url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?w=1600&q=80');
  background-size: cover;
  background-position: center;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  padding: 3rem 1rem;
}

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

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

/* Buttons */
.btn-primary,
.btn-outline {
  border-radius: 6px;
  padding: 0.65rem 1.5rem;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  font-weight: 600;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

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

.btn-large {
  padding: 0.9rem 2rem;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
  padding: 0.85rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: center;
}

/* Intro Section */
.intro-section {
  padding: 3rem 0;
  background: var(--grey-light);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.intro-text h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--grey-dark);
}

.check-list {
  list-style: none;
  font-size: 1rem;
}

.check-list li {
  padding: 0.5rem 0;
  color: var(--grey-dark);
}

.intro-image img {
  border-radius: 12px;
  box-shadow: var(--shadow);
}

/* Section Styles */
section {
  padding: 3rem 0;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--grey-dark);
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.service-card {
  border-radius: 12px;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.service-image {
  height: 200px;
  overflow: hidden;
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.service-card:hover .service-image img {
  transform: scale(1.05);
}

.service-content {
  padding: 1.25rem;
}

.service-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.65rem;
  color: var(--grey-dark);
}

.service-content p {
  font-size: 0.95rem;
  color: var(--grey-mid);
  margin-bottom: 0.75rem;
}

.price-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--grey-dark);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  text-align: center;
  padding: 3rem 1rem;
}

.cta-banner h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
  align-items: center;
}

.about-image img {
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.about-text h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.about-text p {
  margin-bottom: 1rem;
  color: var(--grey-mid);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.stat-box {
  text-align: center;
  padding: 1rem;
  background: var(--grey-light);
  border-radius: 8px;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--grey-mid);
}

/* Modern Contact Cards */
.lead {
  font-size: 1.1rem;
  color: var(--grey-mid);
  margin-bottom: 2rem;
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.contact-card-modern {
  background: var(--white);
  padding: 2.5rem 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: all 0.4s ease;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.contact-card-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

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

.contact-card-modern:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 40px rgba(255, 152, 0, 0.25);
  border-color: var(--primary-light);
}

.card-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  transition: transform 0.4s ease;
}

.contact-card-modern:hover .card-icon {
  transform: scale(1.15) rotate(5deg);
}

.contact-card-modern h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--grey-dark);
  font-weight: 700;
}

.card-detail {
  font-size: 0.95rem;
  color: var(--grey-mid);
  margin-bottom: 1.25rem;
}

.card-link {
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  margin: 0.75rem 0;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.card-link:hover {
  background: var(--grey-light);
  color: var(--primary-dark);
  transform: scale(1.05);
}

.card-link-static {
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0.75rem 0;
  padding: 0.5rem 1rem;
}

.card-info {
  font-size: 0.85rem;
  color: var(--grey-mid);
  margin-top: 0.75rem;
}

/* Gallery */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  border-radius: 12px;
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.card-thumb {
  height: 220px;
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card-thumb img {
  transform: scale(1.08);
}

.card-body {
  padding: 1.25rem;
}

.card-body h2 {
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
  color: var(--grey-dark);
}

.card-body p {
  font-size: 0.9rem;
  color: var(--grey-mid);
  margin-bottom: 0.75rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
}

.tag {
  background: var(--grey-light);
  padding: 0.25rem 0.65rem;
  border-radius: 15px;
  color: var(--grey-dark);
}

/* Calculator */
.calc-hero {
  background: var(--grey-light);
  padding: 2rem 0 3rem;
}

.calc-intro {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 2rem;
}

.calc-image {
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.calc-intro-text h1 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.calculator-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.panel {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.panel h2 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--grey-dark);
}

.panel-result {
  background: linear-gradient(135deg, #fff3e0, #ffe0b2);
}

label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  font-weight: 500;
  color: var(--grey-dark);
}

input,
select {
  width: 100%;
  padding: 0.65rem;
  margin-bottom: 1rem;
  border-radius: 6px;
  border: 1px solid #ddd;
  font-size: 0.95rem;
  transition: border 0.3s ease;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
}

.result-box {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  text-align: center;
}

.result-main {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--grey-dark);
}

.result-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 0.5rem;
}

.result-sub {
  font-size: 0.95rem;
  color: var(--grey-mid);
}

.note {
  font-size: 0.85rem;
  color: var(--grey-mid);
  background: #fff9e6;
  padding: 0.75rem;
  border-radius: 6px;
  border-left: 3px solid #ffc107;
  margin: 1rem 0;
}

.price-table {
  margin-top: 1.5rem;
}

.price-table h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.price-table ul {
  list-style: none;
  margin: 0;
}

.price-table li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
  font-size: 0.9rem;
}

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

/* Footer */
footer {
  background: var(--grey-dark);
  color: var(--white);
  padding-top: 3rem;
}

.footer-content {
  padding-bottom: 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--primary-light);
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #cccccc;
  margin-bottom: 1rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.footer-social a {
  font-size: 1.8rem;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.footer-social a:hover {
  transform: scale(1.2);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #cccccc;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

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

.footer-contact {
  list-style: none;
  font-size: 0.9rem;
}

.footer-contact li {
  margin-bottom: 0.5rem;
  color: #cccccc;
}

.footer-contact a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-contact a:hover {
  color: var(--white);
}

.footer-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: 2rem 0 1.5rem;
}

.footer-bottom {
  padding-bottom: 1.5rem;
}

.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.footer-legal p {
  font-size: 0.85rem;
  color: #cccccc;
}

.footer-legal-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.footer-legal-links a {
  color: #cccccc;
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.3s ease;
}

.footer-legal-links a:hover {
  color: var(--primary-light);
}

.footer-legal-links span {
  color: #666666;
}

.footer-company-info {
  font-size: 0.8rem;
  color: #999999;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 1.8rem;
  }

  .intro-grid,
  .about-grid,
  .calculator-box,
  .calc-intro {
    grid-template-columns: 1fr;
  }

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

  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  nav a {
    margin-left: 0;
    margin-right: 0.5rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

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

  .footer-legal {
    flex-direction: column;
    text-align: center;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}