/* ============================================================
   Ladepark Südheide – Stylesheet
   Design: Dark modern + Teal/Green energy accents
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --bg-darkest:   #050810;
  --bg-dark:      #0a0e1a;
  --bg-card:      #111827;
  --bg-card-2:    #1a2233;
  --bg-glass:     rgba(17, 24, 39, 0.8);
  --border:       rgba(255,255,255,0.07);
  --border-light: rgba(255,255,255,0.12);

  --teal:         #06d6a0;
  --teal-dark:    #059669;
  --teal-glow:    rgba(6,214,160,0.15);
  --teal-glow-2:  rgba(6,214,160,0.08);
  --cyan:         #22d3ee;
  --green:        #10b981;
  --amber:        #f59e0b;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted:   #64748b;

  --radius-sm:    8px;
  --radius:       12px;
  --radius-lg:    20px;
  --radius-xl:    28px;

  --shadow:       0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:    0 8px 48px rgba(0,0,0,0.6);
  --shadow-teal:  0 0 32px rgba(6,214,160,0.2);

  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

.gradient-text {
  background: linear-gradient(135deg, var(--teal) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: linear-gradient(135deg, var(--teal) 0%, var(--cyan) 100%);
  color: #050810;
  box-shadow: 0 4px 20px rgba(6,214,160,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(6,214,160,0.5);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-light);
}
.btn-ghost:hover {
  border-color: var(--teal);
  color: var(--teal);
  background: var(--teal-glow-2);
}

.btn-large { padding: 18px 36px; font-size: 1.1rem; }

/* ---------- Section Headers ---------- */
.section-header { text-align: center; margin-bottom: 64px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--teal-glow);
  border: 1px solid rgba(6,214,160,0.3);
  color: var(--teal);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.section-tag--light {
  background: rgba(6,214,160,0.1);
  border-color: rgba(6,214,160,0.25);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.section-title--light { color: #fff; }

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-subtitle--light { color: rgba(255,255,255,0.7); }

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(10,14,26,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border), 0 4px 20px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.nav-logo:hover { color: var(--teal); }
.logo-icon { font-size: 1.4rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover { color: var(--text-primary); background: var(--teal-glow-2); }

.nav-btn {
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #050810;
  transition: all var(--transition);
  margin-left: 8px;
}
.nav-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-teal); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-image-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/*
  REPLACE hero-image-1 background with your AI-generated image:
  background-image: url('images/hero-ladepark.jpg');
*/
.hero-image {
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(ellipse at 30% 60%, rgba(6,214,160,0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 30%, rgba(34,211,238,0.18) 0%, transparent 50%),
    url('images/hero-ladepark.jpg');
  background-size: cover;
  background-position: center;
  background-color: #050810;
}

/* Grid pattern overlay */
.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(6,214,160,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,214,160,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Animated teal orbs */
.hero-image::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,214,160,0.12) 0%, transparent 70%);
  top: 10%;
  right: 5%;
  animation: float 8s ease-in-out infinite;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(5,8,16,0.3) 0%,
    rgba(5,8,16,0.1) 40%,
    rgba(5,8,16,0.6) 80%,
    rgba(5,8,16,0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 100px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(6,214,160,0.1);
  border: 1px solid rgba(6,214,160,0.3);
  color: var(--teal);
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease 0.2s both;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  position: relative;
  flex-shrink: 0;
}
.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.4;
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  animation: fadeInUp 0.8s ease 0.7s both;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 24px;
}
.hero-stat:first-child { padding-left: 0; }

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  width: 44px;
  height: 44px;
  border: 1.5px solid var(--border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition);
  animation: bounce 2s ease-in-out infinite;
}
.hero-scroll svg { width: 18px; height: 18px; }
.hero-scroll:hover { border-color: var(--teal); color: var(--teal); }

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  padding: 120px 0;
  background: var(--bg-dark);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-col { position: relative; }

.about-image-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

/*
  REPLACE with AI image:
  background-image: url('images/about-ladepark.jpg');
  Prompt: "Aerial view of modern EV charging hub in German countryside,
  solar carport, multiple charging stations, heathland, golden hour"
*/
.about-image-bg {
  width: 100%; height: 100%;
  background-image:
    radial-gradient(ellipse at 40% 50%, rgba(6,214,160,0.15) 0%, transparent 60%),
    url('images/about-ladepark.jpg');
  background-size: cover;
  background-position: center;
  background-color: #071a22;
  position: relative;
}

.about-image-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 30px,
      rgba(6,214,160,0.03) 30px,
      rgba(6,214,160,0.03) 31px
    );
}

/* Decorative EV charging visualization */
.about-image-bg::after {
  content: '';
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 40%;
  background:
    radial-gradient(ellipse, rgba(6,214,160,0.25) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
}

.about-image-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(5,8,16,0.85);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}
.about-image-badge svg { width: 20px; height: 20px; color: var(--teal); flex-shrink: 0; }

.about-cards { display: flex; flex-direction: column; gap: 16px; }

.about-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition);
}
.about-card:hover {
  border-color: var(--border-light);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.about-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--icon-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--icon-color) 25%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--icon-color);
}
.about-card-icon svg { width: 20px; height: 20px; }

.about-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}
.about-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.features-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/*
  REPLACE with AI image:
  background-image: url('images/features-lounge.jpg');
  Prompt: "Interior of modern EV charging lounge, warm ambient lighting,
  comfortable seating, coffee station, large windows, architectural render"
*/
.features-bg-image {
  width: 100%; height: 100%;
  background-image:
    url('images/features-lounge.jpg');
  background-size: cover;
  background-position: center;
  background-color: var(--bg-darkest);
}

.features-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,16,0.82);
}

.features .container { position: relative; z-index: 1; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  backdrop-filter: blur(12px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: rgba(6,214,160,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), var(--shadow-teal);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 24px; height: 24px; }

.feature-icon--primary { background: rgba(6,214,160,0.12); color: var(--teal); border: 1px solid rgba(6,214,160,0.2); }
.feature-icon--solar   { background: rgba(245,158,11,0.12); color: var(--amber); border: 1px solid rgba(245,158,11,0.2); }
.feature-icon--battery { background: rgba(34,211,238,0.12); color: var(--cyan); border: 1px solid rgba(34,211,238,0.2); }
.feature-icon--wifi    { background: rgba(16,185,129,0.12); color: var(--green); border: 1px solid rgba(16,185,129,0.2); }
.feature-icon--lounge  { background: rgba(167,139,250,0.12); color: #a78bfa; border: 1px solid rgba(167,139,250,0.2); }
.feature-icon--vending { background: rgba(251,146,60,0.12); color: #fb923c; border: 1px solid rgba(251,146,60,0.2); }
.feature-icon--clock   { background: rgba(6,214,160,0.12); color: var(--teal); border: 1px solid rgba(6,214,160,0.2); }
.feature-icon--location{ background: rgba(34,211,238,0.12); color: var(--cyan); border: 1px solid rgba(34,211,238,0.2); }

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.feature-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--teal-glow-2);
  border: 1px solid rgba(6,214,160,0.15);
  color: var(--teal);
}

/* ============================================================
   ATMOSPHERE BANNER
   ============================================================ */
.atmosphere-banner {
  position: relative;
  height: 400px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

/*
  REPLACE with AI image:
  background-image: url('images/atmosphere-dusk.jpg');
  Prompt: "EV charging park at blue hour dusk, glowing teal LED charging stations,
  electric cars, stars appearing, German countryside, cinematic wide angle, ultra photorealistic"
*/
.atm-image {
  position: absolute;
  inset: 0;
  background-image:
    url('images/atmosphere-dusk.jpg');
  background-size: cover;
  background-position: center;
  background-color: #071520;
}

.atm-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(6,214,160,0.6), transparent),
    radial-gradient(2px 2px at 60% 20%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 80% 70%, rgba(34,211,238,0.4), transparent),
    radial-gradient(1px 1px at 40% 80%, rgba(255,255,255,0.2), transparent),
    radial-gradient(2px 2px at 15% 70%, rgba(6,214,160,0.3), transparent),
    radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.25), transparent),
    radial-gradient(2px 2px at 55% 60%, rgba(34,211,238,0.2), transparent);
}

.atm-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,16,0.65);
  display: flex;
  align-items: center;
}
.atm-overlay .container { width: 100%; }

.atm-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.atm-content h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: #fff;
}
.atm-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
}

/* ============================================================
   SURVEY
   ============================================================ */
.survey {
  padding: 120px 0;
  background: var(--bg-dark);
}

.survey-wrapper {
  max-width: 760px;
  margin: 0 auto;
}

.survey-form {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.form-group { display: flex; flex-direction: column; gap: 16px; }

.form-label {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  line-height: 1.4;
}
.form-label em {
  font-style: normal;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
}

.form-label-small {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: -8px;
}

.question-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #050810;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

/* Radio */
.radio-group { display: flex; flex-direction: column; gap: 10px; }

.radio-option {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}
.radio-option:hover {
  border-color: var(--border-light);
  background: var(--bg-card-2);
}
.radio-option input[type="radio"] { display: none; }
.radio-option input:checked ~ .radio-custom {
  border-color: var(--teal);
  background: var(--teal);
}
.radio-option input:checked ~ .radio-custom::after { opacity: 1; transform: scale(1); }
.radio-option:has(input:checked) {
  border-color: rgba(6,214,160,0.4);
  background: rgba(6,214,160,0.06);
}

.radio-custom {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  position: relative;
}
.radio-custom::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #050810;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition);
}

.radio-text { display: flex; flex-direction: column; gap: 2px; }
.radio-text strong { font-size: 0.95rem; font-weight: 600; }
.radio-text small { font-size: 0.8rem; color: var(--text-muted); }

/* Checkbox */
.checkbox-group { display: flex; flex-direction: column; gap: 10px; }

.checkbox-option {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  cursor: pointer;
  transition: all var(--transition);
}
.checkbox-option:hover {
  border-color: var(--border-light);
  background: var(--bg-card-2);
}
.checkbox-option input[type="checkbox"] { display: none; }
.checkbox-option input:checked ~ .checkbox-custom {
  border-color: var(--teal);
  background: var(--teal);
}
.checkbox-option input:checked ~ .checkbox-custom::after { opacity: 1; transform: scale(1) rotate(45deg); }
.checkbox-option:has(input:checked) {
  border-color: rgba(6,214,160,0.4);
  background: rgba(6,214,160,0.06);
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 2px solid var(--border-light);
  flex-shrink: 0;
  transition: all var(--transition);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border-right: 2px solid #050810;
  border-bottom: 2px solid #050810;
  opacity: 0;
  transform: scale(0.5) rotate(45deg);
  transition: all var(--transition);
  margin-top: -2px;
}

.checkbox-text { display: flex; flex-direction: column; gap: 2px; }
.checkbox-text strong { font-size: 0.95rem; font-weight: 600; }
.checkbox-text small { font-size: 0.8rem; color: var(--text-muted); }

/* Extras Grid */
.extras-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.extra-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.extra-option:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
  background: var(--bg-card-2);
}
.extra-option:has(input:checked) {
  border-color: rgba(6,214,160,0.5);
  background: rgba(6,214,160,0.08);
  color: var(--teal);
}
.extra-option input { display: none; }
.extra-icon { font-size: 1.8rem; }

/* Inputs & Textareas */
.form-input, .form-textarea {
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.95rem;
  padding: 14px 18px;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
  width: 100%;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-input:focus, .form-textarea:focus {
  border-color: rgba(6,214,160,0.5);
  box-shadow: 0 0 0 3px rgba(6,214,160,0.08);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: -8px;
}

/* Form Actions */
.form-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.form-privacy {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}
.form-privacy svg { width: 14px; height: 14px; flex-shrink: 0; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Survey Success */
.survey-success {
  text-align: center;
  padding: 80px 40px;
}
.success-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(6,214,160,0.12);
  border: 2px solid rgba(6,214,160,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: var(--teal);
}
.success-icon svg { width: 36px; height: 36px; }
.survey-success h3 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.survey-success p { color: var(--text-secondary); max-width: 440px; margin: 0 auto 32px; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/*
  REPLACE with AI image:
  background-image: url('images/contact-night.jpg');
  Prompt: "EV charging park at night, warm teal glow, stars, countryside, ultra photorealistic"
*/
.contact-bg-image {
  width: 100%; height: 100%;
  background-image:
    url('images/contact-night.jpg');
  background-size: cover;
  background-position: center;
  background-color: #050810;
}

.contact-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,16,0.75);
}

.contact .container { position: relative; z-index: 1; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-text {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 36px;
  margin-top: 20px;
}

.contact-email {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(6,214,160,0.08);
  border: 1.5px solid rgba(6,214,160,0.25);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all var(--transition);
  margin-bottom: 24px;
}
.contact-email:hover {
  background: rgba(6,214,160,0.12);
  border-color: rgba(6,214,160,0.4);
  transform: translateY(-2px);
}

.contact-email-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(6,214,160,0.12);
  border: 1px solid rgba(6,214,160,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  flex-shrink: 0;
}
.contact-email-icon svg { width: 22px; height: 22px; }

.contact-email-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-email-address {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--teal);
}

.contact-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.contact-note svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; color: var(--cyan); }

.contact-form-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 36px;
}
.contact-form-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
}
.contact-form-card .form-group { gap: 8px; margin-bottom: 16px; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-darkest);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.footer-description {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 280px;
}

.footer-links-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.footer-links-col ul { display: flex; flex-direction: column; gap: 8px; margin-bottom: 28px; }
.footer-links-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.footer-links-col a:hover { color: var(--teal); }

.footer-contact a {
  display: block;
  font-size: 0.88rem;
  color: var(--teal);
  word-break: break-all;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }
.footer-note { font-style: italic; }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5,8,16,0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 640px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}
.modal-overlay.open .modal-box { transform: translateY(0); }

.modal-box h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 28px;
  padding-right: 40px;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.modal-close:hover { color: var(--text-primary); border-color: var(--border-light); }
.modal-close svg { width: 18px; height: 18px; }

.modal-content h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 24px 0 10px;
}
.modal-content h3:first-child { margin-top: 0; }
.modal-content p, .modal-content li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 4px;
}
.modal-content ul { padding-left: 20px; list-style: disc; margin-bottom: 8px; }
.modal-content a { color: var(--teal); text-decoration: underline; }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 500;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  color: #050810;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(6,214,160,0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(6,214,160,0.5); }
.back-to-top svg { width: 20px; height: 20px; }

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%       { opacity: 0.1; transform: scale(2); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-image-col { order: -1; }
  .about-image-card { aspect-ratio: 16/9; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10,14,26,0.97);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    align-items: stretch;
  }
  .nav-links.open { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: var(--radius-sm); }
  .nav-btn { text-align: center; border-radius: var(--radius-sm); margin-left: 0; }

  .hero-title { font-size: clamp(2.8rem, 10vw, 4rem); }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .hero-stat-divider { display: none; }
  .hero-stat { padding: 0; }

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

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

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

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .modal-box { padding: 28px 20px; }

  .atmosphere-banner { height: 320px; }

  .section-header { margin-bottom: 40px; }

  section.about,
  section.features,
  section.survey,
  section.contact { padding: 80px 0; }

  .back-to-top { bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .extras-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-content { padding: 100px 20px 80px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-darkest); }
::-webkit-scrollbar-thumb { background: var(--bg-card-2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }