/* ========== Custom Properties ========== */
:root {
  --mint-900: #064e3b;
  --mint-800: #047857;
  --mint-700: #059669;
  --mint-500: #10b981;
  --mint-300: #6ee7b7;
  --mint-100: #d1fae5;
  --mint-50: #ecfdf5;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Base Reset & Smooth Scroll ========== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========== Navbar ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--mint-100);
  transition: var(--transition);
  padding: 0 2rem;
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

.navbar .nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar .logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--mint-800);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.5px;
}

.navbar .logo i {
  color: var(--mint-500);
  font-size: 1.75rem;
}

.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar .nav-links a {
  text-decoration: none;
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

.navbar .nav-links a:hover {
  color: var(--mint-700);
}

.navbar .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--mint-500);
  transition: width var(--transition);
}

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

/* Green glow CTA button */
.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--mint-700), var(--mint-500));
  color: #fff !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.45), 0 4px 12px rgba(4, 120, 87, 0.3);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}

.nav-cta-btn:hover {
  background: linear-gradient(135deg, var(--mint-800), var(--mint-700));
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.6), 0 6px 20px rgba(4, 120, 87, 0.4);
  transform: translateY(-2px);
  color: #fff !important;
}

.nav-cta-btn::after {
  display: none !important;
}

/* Mobile menu toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .navbar .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    border-bottom: 1px solid var(--mint-100);
    box-shadow: var(--shadow-lg);
  }

  .navbar .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-toggle {
    display: flex;
  }
}

/* ========== Hero Section ========== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #064e3b 0%, #047857 30%, #10b981 60%, #6ee7b7 100%);
  position: relative;
  overflow: hidden;
  padding: 120px 2rem 80px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: heroFloat 8s ease-in-out infinite;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: heroFloat 10s ease-in-out infinite reverse;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.05); }
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mint-100);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(4px);
}

.hero-badge i {
  color: var(--mint-300);
}

.hero-text h1 {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.hero-text h1 span {
  color: var(--mint-300);
  display: block;
}

.hero-text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  max-width: 500px;
}

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

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: #fff;
  color: var(--mint-800);
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
}

.hero-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
  background: var(--mint-50);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

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

.hero-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  transition: var(--transition);
  border: 3px solid rgba(255, 255, 255, 0.2);
}

.hero-image-wrapper img:hover {
  transform: scale(1.02) rotate(-1deg);
  box-shadow: 0 32px 72px rgba(0, 0, 0, 0.45);
}

@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .hero-text h1 {
    font-size: 2.25rem;
  }

  .hero-text p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image-wrapper img {
    max-width: 90%;
  }
}

/* ========== Features Section ========== */
.features-section {
  padding: 6rem 2rem;
  background: var(--gray-50);
  position: relative;
}

.features-section .section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.features-section .section-header .section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--mint-100);
  color: var(--mint-800);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.features-section .section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
  letter-spacing: -0.5px;
}

.features-section .section-header p {
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem 2rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gray-100);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--mint-200);
}

/* Checkmark badge in corner */
.feature-card .checkmark-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--mint-500), var(--mint-700));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.8rem;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
  z-index: 2;
}

.feature-card .feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--mint-100), var(--mint-50));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--mint-700);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--mint-500), var(--mint-700));
  color: #fff;
  transform: scale(1.08);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .features-section .section-header h2 {
    font-size: 1.75rem;
  }
}

/* ========== Stats Section - Horizontal Bar Chart Style ========== */
.stats-section {
  padding: 6rem 2rem;
  background: linear-gradient(180deg, var(--mint-900) 0%, var(--mint-800) 50%, var(--mint-700) 100%);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.stats-container {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.stats-section .section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.stats-section .section-header .section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  color: var(--mint-300);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.stats-section .section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}

.stats-section .section-header p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
}

/* Horizontal bar chart stats */
.stats-chart {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.stat-bar-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.stat-bar-label {
  min-width: 140px;
  text-align: right;
}

.stat-bar-label .stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--mint-300);
  line-height: 1;
}

.stat-bar-label .stat-name {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

.stat-bar-track {
  flex: 1;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  overflow: hidden;
  position: relative;
}

.stat-bar-fill {
  height: 100%;
  border-radius: 50px;
  background: linear-gradient(90deg, var(--mint-500), var(--mint-300));
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 16px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--mint-900);
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.stat-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.stat-bar-fill.w-95 { width: 95%; }
.stat-bar-fill.w-88 { width: 88%; }
.stat-bar-fill.w-92 { width: 92%; }
.stat-bar-fill.w-85 { width: 85%; }

@media (max-width: 640px) {
  .stat-bar-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .stat-bar-label {
    text-align: left;
    min-width: auto;
  }

  .stat-bar-label .stat-number {
    font-size: 1.5rem;
  }
}

/* ========== Testimonials Section ========== */
.testimonials-section {
  padding: 6rem 2rem;
  background: var(--white);
}

.testimonials-section .section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.testimonials-section .section-header .section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--mint-100);
  color: var(--mint-800);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.testimonials-section .section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
}

.testimonials-section .section-header p {
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.testimonials-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--gray-100);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--mint-200);
}

/* Quote SVG in background */
.testimonial-card .quote-bg {
  position: absolute;
  top: 16px;
  right: 20px;
  opacity: 0.08;
  transition: opacity var(--transition);
}

.testimonial-card:hover .quote-bg {
  opacity: 0.15;
}

.testimonial-card .quote-bg svg {
  width: 64px;
  height: 64px;
  fill: var(--mint-700);
}

.testimonial-card .testimonial-stars {
  color: #f59e0b;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.testimonial-card .testimonial-text {
  color: var(--gray-600);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

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

.testimonial-card .testimonial-author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--mint-200);
}

.testimonial-card .testimonial-author .author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-800);
  margin: 0;
}

.testimonial-card .testimonial-author .author-info span {
  font-size: 0.8rem;
  color: var(--gray-400);
}

@media (max-width: 1024px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== FAQ Section ========== */
.faq-section {
  padding: 6rem 2rem;
  background: var(--gray-50);
}

.faq-section .section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.faq-section .section-header .section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--mint-100);
  color: var(--mint-800);
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.faq-section .section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 0.75rem;
}

.faq-section .section-header p {
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Accordion styles with slide-down animation */
.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--mint-300);
}

.faq-item.active {
  border-color: var(--mint-500);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.12);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gray-800);
  text-align: left;
  transition: var(--transition);
  gap: 1rem;
}

.faq-question:hover {
  color: var(--mint-700);
}

.faq-item.active .faq-question {
  color: var(--mint-800);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mint-100);
  color: var(--mint-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  transition: all var(--transition);
}

.faq-item.active .faq-question .faq-icon {
  background: var(--mint-500);
  color: #fff;
  transform: rotate(180deg);
}

/* Slide-down animation using max-height */
.faq-answer-wrapper {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer-wrapper {
  max-height: 300px;
}

.faq-answer {
  padding: 0 1.5rem 1.5rem;
  color: var(--gray-600);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: 6rem 2rem;
  background: linear-gradient(135deg, var(--mint-700) 0%, var(--mint-500) 50%, var(--mint-300) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}

.cta-container {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-container h2 {
  font-size: 2.75rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.cta-container p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

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

.cta-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  background: #fff;
  color: var(--mint-800);
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.cta-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.cta-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  transition: var(--transition);
}

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

/* ========== Footer ========== */
.footer-section {
  padding: 4rem 2rem 2rem;
  background: var(--gray-900);
  color: var(--gray-400);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
}

.footer-brand h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--mint-300);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
}

.footer-social a:hover {
  background: var(--mint-500);
  color: #fff;
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col ul li a {
  color: var(--gray-500);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--mint-300);
  padding-left: 4px;
}

.footer-bottom {
  max-width: 1280px;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-500);
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-container {
    grid-template-columns: 1fr;
  }
}

/* ========== Scroll to Top ========== */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mint-700), var(--mint-500));
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.5);
}

/* ========== Animations on Scroll ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}