/* STDS - Société Tunisienne de l'Énergie Solaire */
/* Brand Colors: Orange #E67E22, Blue #1A5276, Green #27AE60 */

:root {
  --primary-blue: #1A5276;
  --secondary-blue: #2980B9;
  --orange: #E67E22;
  --orange-light: #F39C12;
  --green: #27AE60;
  --green-dark: #1E8449;
  --light-gray: #F8F9FA;
  --dark-gray: #2C3E50;
  --text-dark: #1a1a1a;
  --text-muted: #6c757d;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.2);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==================== NAVIGATION ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 82, 118, 0.97);
  backdrop-filter: blur(10px);
  padding: 0.8rem 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 0.5rem 0;
  background: rgba(26, 82, 118, 1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.nav-logo img {
  height: 50px;
  width: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--orange);
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
}

.nav-logo-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 2px;
  line-height: 1;
}

.nav-logo-subtitle {
  font-size: 0.6rem;
  color: var(--orange-light);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.3rem;
  align-items: center;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--orange-light);
  background: rgba(255,255,255,0.1);
}

.nav-cta {
  background: var(--orange) !important;
  color: var(--primary-blue) !important;
  font-weight: 700 !important;
  padding: 0.6rem 1.2rem !important;
  border-radius: 25px !important;
}

.nav-cta:hover {
  background: var(--orange-light) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(230,126,34,0.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--white);
  border-radius: 3px;
  transition: var(--transition);
}

/* ==================== HERO SLIDER ==================== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,82,118,0.75) 0%, rgba(0,0,0,0.4) 100%);
}

.hero-slide-1 { background-image: url('../images/hero_main_promo.jpeg'); background-position: center top; }
.hero-slide-2 { background-image: url('../images/solar_system_diagram.jpeg'); }
.hero-slide-3 { background-image: url('../images/photo2_innovation.jpeg'); }
.hero-slide-4 { background-image: url('../images/photo3_contact.jpeg'); }
.hero-slide-5 { background-image: url('../images/photo_solar_diagram.jpeg'); }

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--white);
  width: 90%;
  max-width: 800px;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  background: var(--orange);
  color: var(--primary-blue);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 1.2rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

.hero-title span {
  color: var(--orange-light);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  opacity: 0.95;
  margin-bottom: 2rem;
  font-weight: 400;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.4);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  background: var(--orange);
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(230,126,34,0.4);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--orange-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(230,126,34,0.5);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  transition: var(--transition);
  border: 2px solid rgba(255,255,255,0.8);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
  transform: translateY(-3px);
}

.hero-indicators {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.6rem;
  z-index: 3;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.hero-dot.active {
  background: var(--orange);
  transform: scale(1.3);
}

.hero-arrows {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 3;
}

.hero-arrow {
  background: rgba(255,255,255,0.2);
  border: 2px solid rgba(255,255,255,0.5);
  color: var(--white);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.2rem;
}

.hero-arrow:hover {
  background: var(--orange);
  border-color: var(--orange);
}

/* ==================== STATS BAR ==================== */
.stats-bar {
  background: var(--primary-blue);
  padding: 1.5rem 0;
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}

.stat-item {
  color: var(--white);
  padding: 0.5rem;
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
  color: var(--orange-light);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  opacity: 0.85;
  margin-top: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==================== SECTIONS ==================== */
.section {
  padding: 5rem 0;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  background: rgba(230,126,34,0.12);
  color: var(--orange);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.8rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ==================== OFFER BANNER ==================== */
.offer-banner {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  padding: 2.5rem 0;
}

.offer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.offer-text h2 {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.offer-text p {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
}

.offer-features {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.offer-feature {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white);
  font-weight: 600;
}

.offer-feature .check {
  width: 28px;
  height: 28px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.offer-cta .btn-offer {
  display: inline-block;
  background: var(--white);
  color: var(--green-dark);
  font-weight: 800;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  white-space: nowrap;
}

.offer-cta .btn-offer:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.25);
  background: var(--light-gray);
}

/* ==================== SERVICES ==================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-top: 4px solid transparent;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--green));
  transform: scaleX(0);
  transition: var(--transition);
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2rem;
  color: var(--white);
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  transform: scale(1.1) rotate(5deg);
}

.service-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 0.8rem;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ==================== HOW IT WORKS ==================== */
.how-it-works {
  background: var(--primary-blue);
  padding: 5rem 0;
}

.how-it-works .section-title {
  color: var(--white);
}

.how-it-works .section-desc {
  color: rgba(255,255,255,0.8);
}

.how-it-works .section-tag {
  background: rgba(230,126,34,0.2);
  color: var(--orange-light);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  position: relative;
}

.step-card {
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
}

.step-number {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--primary-blue);
  box-shadow: 0 4px 20px rgba(230,126,34,0.4);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.8rem;
}

.step-desc {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ==================== DIAGRAM SECTION ==================== */
.diagram-section {
  padding: 5rem 0;
  background: var(--light-gray);
}

.diagram-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.diagram-text h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-blue);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.diagram-text p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.diagram-list {
  list-style: none;
  margin-bottom: 2rem;
}

.diagram-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.diagram-list .icon {
  color: var(--green);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.diagram-image {
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

.diagram-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==================== FEATURES ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 2rem;
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.feature-icon {
  width: 55px;
  height: 55px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.feature-icon.blue { background: rgba(26,82,118,0.1); color: var(--primary-blue); }
.feature-icon.orange { background: rgba(230,126,34,0.1); color: var(--orange); }
.feature-icon.green { background: rgba(39,174,96,0.1); color: var(--green); }

.feature-text h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 0.4rem;
}

.feature-text p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==================== GALLERY ==================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gallery-item {
  border-radius: var(--border-radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 1;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,82,118,0.8), transparent);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

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

.gallery-overlay-text {
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
}

/* ==================== CONTACT ==================== */
.contact-section {
  background: var(--primary-blue);
  padding: 5rem 0;
}

.contact-section .section-title {
  color: var(--white);
}

.contact-section .section-desc {
  color: rgba(255,255,255,0.8);
}

.contact-section .section-tag {
  background: rgba(230,126,34,0.2);
  color: var(--orange-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}

.contact-info {
  color: var(--white);
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--orange-light);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  color: var(--orange-light);
}

.contact-item-text {
  flex: 1;
}

.contact-item-label {
  font-size: 0.8rem;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.2rem;
}

.contact-item-value {
  font-size: 1rem;
  font-weight: 600;
}

.contact-item-value a {
  color: var(--white);
  text-decoration: none;
  transition: var(--transition);
}

.contact-item-value a:hover {
  color: var(--orange-light);
}

.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: #25D366;
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 1.8rem;
  border-radius: 30px;
  text-decoration: none;
  transition: var(--transition);
  margin-top: 1rem;
  box-shadow: 0 4px 15px rgba(37,211,102,0.4);
}

.whatsapp-btn:hover {
  background: #1da851;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37,211,102,0.5);
}

.contact-form {
  background: rgba(255,255,255,0.05);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  border: 1px solid rgba(255,255,255,0.1);
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: var(--white);
  font-size: 0.95rem;
  transition: var(--transition);
  font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.4);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
  background: rgba(255,255,255,0.15);
}

.form-group select option {
  background: var(--primary-blue);
  color: var(--white);
}

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

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

.btn-form {
  width: 100%;
  background: var(--orange);
  color: var(--primary-blue);
  font-weight: 800;
  font-size: 1rem;
  padding: 1rem;
  border-radius: 30px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.5rem;
}

.btn-form:hover {
  background: var(--orange-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230,126,34,0.4);
}

/* ==================== FACEBOOK SECTION ==================== */
.facebook-section {
  padding: 4rem 0;
  background: var(--light-gray);
}

.facebook-card {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--shadow);
  max-width: 600px;
  margin: 0 auto;
}

.facebook-icon {
  font-size: 3rem;
  color: #1877F2;
  margin-bottom: 1rem;
}

.facebook-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 0.8rem;
}

.facebook-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.btn-facebook {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: #1877F2;
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  transition: var(--transition);
}

.btn-facebook:hover {
  background: #0d65d9;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(24,119,242,0.4);
}

/* ==================== FOOTER ==================== */
.footer {
  background: #0d2137;
  color: rgba(255,255,255,0.8);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.footer-brand img {
  height: 55px;
  width: 55px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-brand-text .name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 2px;
}

.footer-brand-text .tagline {
  font-size: 0.65rem;
  color: var(--orange-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  opacity: 0.8;
}

.footer-social {
  display: flex;
  gap: 0.8rem;
}

.social-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
}

.social-btn.facebook {
  background: #1877F2;
  color: var(--white);
}

.social-btn.whatsapp {
  background: #25D366;
  color: var(--white);
}

.social-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--orange);
  display: inline-block;
}

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

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a:hover {
  color: var(--orange-light);
  padding-left: 5px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
  font-size: 0.9rem;
}

.footer-contact-item .icon {
  color: var(--orange-light);
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.footer-contact-item a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: var(--transition);
}

.footer-contact-item a:hover {
  color: var(--orange-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.85rem;
  opacity: 0.6;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

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

/* ==================== MOBILE MENU ==================== */
@media (max-width: 900px) {
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--primary-blue);
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    transition: right 0.3s ease;
    box-shadow: -5px 0 30px rgba(0,0,0,0.3);
    z-index: 999;
  }

  .nav-links.open { right: 0; }

  .nav-links a {
    font-size: 1.1rem;
    padding: 0.8rem 1rem;
    width: 100%;
  }

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

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

  .diagram-content {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 600px) {
  .hero-content {
    width: 95%;
  }

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

  .offer-content {
    flex-direction: column;
    text-align: center;
  }

  .offer-features {
    justify-content: center;
  }

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

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

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

  .hero-arrows {
    display: none;
  }
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--orange);
  color: var(--primary-blue);
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(230,126,34,0.4);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 100;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: all;
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(230,126,34,0.5);
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }