/* ============================================
   NDZONGHAN DMC - Complete Website Styles
   Forest Green | Deep Teal | Golden Amber
   Responsive: Desktop | Tablet | Mobile
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Lato:wght@300;400;600;700&display=swap');

:root {
  --primary: #2D5016;
  --primary-dark: #1E3A0F;
  --primary-light: #4A7A28;
  --teal: #1B4D4D;
  --teal-dark: #123838;
  --accent: #C8963E;
  --accent-hover: #A87830;
  --accent-light: #E0B86A;
  --ivory: #F8F6F0;
  --cream: #F0EDE4;
  --white: #FFFFFF;
  --charcoal: #2C2C2C;
  --gray: #6B6B6B;
  --gray-light: #9A9A9A;
  --border: #E0DDD4;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Lato', 'Helvetica Neue', Arial, sans-serif;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 50px rgba(0,0,0,0.14);
  --radius: 8px;
  --radius-sm: 4px;
}

/* ========== RESET & BASE ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--charcoal);
  line-height: 1.7;
  font-size: 1rem;
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary);
  line-height: 1.25;
  font-weight: 600;
}
a { color: var(--teal); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: var(--font-body); }
ul, ol { list-style: none; }

/* ========== UTILITIES ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 900px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.section { padding: 100px 0; }
.section-sm { padding: 60px 0; }
.bg-ivory { background: var(--ivory); }
.bg-teal { background: var(--teal); }
.bg-charcoal { background: var(--charcoal); }
.bg-primary { background: var(--primary); }
.text-white { color: var(--white); }
.text-accent { color: var(--accent); }
.text-gray { color: var(--gray); }

/* ========== BUTTONS ========== */
.btn {
  display: inline-block;
  padding: 16px 40px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border: 2px solid transparent;
  transition: var(--transition);
  text-align: center;
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,150,62,0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-white {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.btn-white:hover {
  background: transparent;
  color: var(--white);
  transform: translateY(-2px);
}
.btn-small { padding: 12px 28px; font-size: 0.8rem; }

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}
.logo span { color: var(--accent); font-weight: 400; font-size: 0.7em; letter-spacing: 1px; }
.logo-img {
  height: 34px;
  width: auto;
  display: block;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-text .logo-main {
  font-size: 0.95rem;
  letter-spacing: 1px;
  font-weight: 700;
  white-space: nowrap;
}
.logo-text .logo-sub {
  font-size: 0.5rem;
  letter-spacing: 2px;
  font-weight: 400;
  color: var(--accent);
  margin-top: 1px;
  white-space: nowrap;
}

/* Page Color Themes */
.page-corporate .logo { color: var(--teal); }
.page-corporate .logo-text .logo-sub { color: var(--accent); }
.page-impact .logo { color: var(--primary); }
.page-impact .logo-text .logo-sub { color: var(--accent); }
.page-impact .btn-primary { background: var(--accent); }
.page-impact .btn-primary:hover { background: var(--accent-hover); }
.page-impact .section-label { color: var(--accent); }
.page-impact .tax-notice { border-left-color: var(--accent); }
.page-impact .impact-item h3 { color: var(--accent); }

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 14px; }
.main-nav a {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--charcoal);
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); }

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
}
.lang-switcher a {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 3px;
  color: var(--gray);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.lang-switcher a:hover { background: var(--ivory); color: var(--primary); }
.lang-switcher a.active { background: var(--primary); color: var(--white); }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  z-index: 1001;
}
.menu-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--charcoal);
  transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--teal-dark) 50%, var(--primary) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 600"><path fill="%23C8963E" fill-opacity="0.05" d="M0,300 C240,400 480,200 720,300 C960,400 1200,200 1440,300 L1440,600 L0,600 Z"/></svg>') bottom/100% auto no-repeat;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.45;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(26,26,26,0.5) 0%, rgba(26,26,26,0.3) 50%, rgba(26,26,26,0.6) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 120px 24px 80px;
  color: var(--white);
}
.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 24px;
  color: var(--accent-light);
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.1;
  text-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: rgba(255,255,255,0.9);
  margin-bottom: 40px;
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Page Hero (smaller) */
.page-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--teal-dark) 100%);
  padding: 120px 24px 60px;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--ivory), transparent);
}
.page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
}
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--white);
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== SECTION HEADINGS ========== */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 12px;
}
.section h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 20px;
  color: var(--primary);
}
.section h3 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  margin-bottom: 12px;
  color: var(--teal);
}
.section-intro {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 700px;
  margin-bottom: 48px;
}

/* ========== CARDS ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.card-image {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.4), transparent 60%);
}
.card-content { padding: 28px; }
.card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--primary);
}
.card p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ========== CIRCUIT CARDS ========== */
.circuits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.circuit-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.circuit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.circuit-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0.1) 100%);
}
.circuit-card-content {
  position: relative;
  z-index: 2;
  padding: 36px;
  color: var(--white);
}
.circuit-card-location {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 8px;
}
.circuit-card h3 {
  font-size: 1.6rem;
  color: var(--white);
  margin-bottom: 10px;
}
.circuit-card p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* ========== IMPACT SECTIONS ========== */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
.impact-item {
  padding: 40px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.impact-item h3 { margin-bottom: 16px; }
.impact-item ul { list-style: disc; padding-left: 20px; }
.impact-item ul li {
  font-size: 0.95rem;
  color: var(--gray);
  margin-bottom: 10px;
  line-height: 1.6;
}
.tax-notice {
  background: linear-gradient(135deg, var(--primary) 0%, var(--teal) 100%);
  color: var(--white);
  padding: 40px;
  border-radius: var(--radius);
  margin-bottom: 48px;
}
.tax-notice h3 { color: var(--accent-light); margin-bottom: 12px; }
.tax-notice p { color: rgba(255,255,255,0.9); }

/* ========== FORMS ========== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.form-grid .full-width { grid-column: 1 / -1; }
.form-group { margin-bottom: 4px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group label .required { color: #C0392B; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--charcoal);
  background: var(--white);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(45,80,22,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.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 12 12'%3E%3Cpath fill='%236B6B6B' d='M6 9L1 4h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
legend {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary);
  padding: 0 12px;
}
.checkbox-group { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 400;
  text-transform: none;
  cursor: pointer;
}
.checkbox-group input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--primary);
}
.radio-group { display: flex; gap: 20px; }
.radio-group label { display: flex; align-items: center; gap: 8px; font-weight: 400; text-transform: none; }

/* ========== CONTACT INFO ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-detail .icon {
  width: 44px; height: 44px;
  background: var(--ivory);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-detail h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: var(--gray); margin-bottom: 4px; }
.contact-detail p { font-size: 1rem; color: var(--charcoal); }
.contact-detail a { color: var(--teal); }
.contact-detail a:hover { color: var(--accent); }

/* ========== VIDEO SECTION ========== */
.video-section {
  position: relative;
  background: var(--teal);
  padding: 100px 0;
  overflow: hidden;
}
.video-section-content {
  position: relative;
  z-index: 2;
  text-align: center;
  margin-bottom: 48px;
}
.video-section-content h2 { color: var(--white); margin-bottom: 16px; }
.video-section-content p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
.video-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.video-container video,
.video-container iframe {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
  border: none;
}

/* ========== FOUNDER SECTION ========== */
.founder-section { background: var(--ivory); }
.founder-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}
.founder-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.founder-image img { width: 100%; height: 100%; object-fit: cover; }
.founder-quote {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-style: italic;
  color: var(--teal);
  line-height: 1.5;
  margin-bottom: 24px;
  border-left: 3px solid var(--accent);
  padding-left: 24px;
}
.founder-name { font-size: 1.3rem; font-weight: 700; color: var(--primary); }
.founder-title { font-size: 0.95rem; color: var(--gray); }

/* ========== FOOTER ========== */
.site-footer {
  background: var(--teal-dark);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo { color: var(--white); margin-bottom: 16px; display: inline-flex; }
.footer-brand .logo-img { filter: brightness(0) invert(1); }
.footer-brand .logo-text .logo-main { color: var(--white); }
.footer-brand .logo-text .logo-sub { color: var(--accent-light); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.7); }
.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-light);
  margin-bottom: 20px;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 10px;
}
.footer-col a:hover { color: var(--accent-light); }
.footer-lang { display: flex; gap: 8px; margin-top: 16px; }
.footer-lang a {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
}
.footer-lang a:hover, .footer-lang a.active { background: var(--accent); border-color: var(--accent); color: var(--white); }

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ========== WHATSAPP FLOAT ========== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  transition: var(--transition);
  animation: pulse 2s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37,211,102,0.5);
  animation: none;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,0.4); }
  50% { box-shadow: 0 4px 24px rgba(37,211,102,0.7); }
}

/* ========== BREADCRUMB ========== */
.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--gray);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--teal); }
.breadcrumb a:hover { color: var(--accent); }

/* ========== CTA BANNER ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--teal) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
}
.cta-banner h2 { color: var(--white); font-size: 2.2rem; margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 32px; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .circuits-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .founder-grid { grid-template-columns: 1fr; }
  .impact-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .checkbox-group { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .cards-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .header-inner { height: 70px; }
  .main-nav {
    position: fixed;
    top: 70px; left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }
  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .main-nav a { font-size: 1rem; padding: 8px 0; }
  .lang-switcher { margin-left: auto; border-left: none; }
  .menu-toggle { display: flex; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 100%; max-width: 300px; }
  .checkbox-group { grid-template-columns: 1fr; }
  .radio-group { flex-direction: column; gap: 8px; }
  .page-hero { min-height: 40vh; padding-top: 100px; }
}

@media (max-width: 480px) {
  .container, .container-narrow { padding: 0 16px; }
  .section { padding: 48px 0; }
  .hero-content { padding: 100px 16px 60px; }
  .card-content { padding: 20px; }
  .circuit-card-content { padding: 24px; }
  .circuit-card { min-height: 350px; }
  .impact-item { padding: 24px; }
  fieldset { padding: 16px; }
  .btn { padding: 14px 28px; font-size: 0.8rem; }
  .whatsapp-float { width: 52px; height: 52px; bottom: 16px; right: 16px; }
}

/* ========== SCROLL ANIMATIONS ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== SUCCESS MESSAGE ========== */
.success-message {
  display: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--teal) 100%);
  color: var(--white);
  padding: 40px;
  border-radius: var(--radius);
  text-align: center;
}
.success-message h3 { color: var(--accent-light); margin-bottom: 12px; }
.success-message p { color: rgba(255,255,255,0.9); }