/* ============================================
   Voltaro EV Charging - Promo Website Styles
   Design: Dark Tech Theme with Blue Accent
   Font: Inter
   ============================================ */

:root {
  --color-primary: #2E79F7;
  --color-primary-light: #5B9AFF;
  --color-primary-dark: #1E3A5F;
  --color-secondary: #16A34A;
  --color-error: #DC2626;
  --color-bg-start: #080B1C;
  --color-bg-end: #0B1038;
  --color-surface: #1E2B4B;
  --color-surface-dark: #131D33;
  --color-surface-darker: #0A0F22;
  --color-border: #3A4A6B;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #8B9DC3;
  --color-text-muted: #5B6E8A;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --font-family: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: linear-gradient(180deg, var(--color-bg-start), var(--color-bg-end));
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary);
}

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

/* ---- Navigation ---- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 15, 34, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(46, 121, 247, 0.15);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.nav-logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
  white-space: nowrap;
}

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

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ---- Mobile Nav ---- */
@media (max-width: 768px) {
  .nav-hamburger {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 15, 34, 0.98);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(46, 121, 247, 0.15);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1rem;
    padding: 8px 0;
  }
}

/* ---- Hero Section ---- */
.hero {
  padding: 120px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 60px;
  min-height: 80vh;
}

.hero-content {
  flex: 1;
  text-align: left;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-device {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
}

.device-mockup {
  position: relative;
  width: 280px;
  max-width: 100%;
}

.device-mockup .device-frame {
  position: relative;
  background: linear-gradient(145deg, #1a2540, #0d1528);
  border-radius: 36px;
  padding: 12px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(46, 121, 247, 0.1);
  border: 2px solid rgba(58, 74, 107, 0.4);
}

.device-mockup .device-frame img {
  width: 100%;
  border-radius: 26px;
  display: block;
}

.device-mockup .device-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 24px;
  background: #0d1528;
  border-radius: 0 0 14px 14px;
  z-index: 2;
}

@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 100px;
    min-height: auto;
  }

  .hero-content {
    text-align: center;
  }

  .hero-content p {
    max-width: 100%;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }

  .device-mockup {
    width: 220px;
  }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(46, 121, 247, 0.35);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(46, 121, 247, 0.45);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 900px) {
  .btn-group {
    justify-content: center;
  }
}

/* ---- Section Common ---- */
.section {
  padding: 80px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* ---- Features (Alternating) ---- */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.feature-row {
  display: flex;
  align-items: center;
  gap: 48px;
}

.feature-row.reverse {
  flex-direction: row-reverse;
}

.feature-icon {
  flex: 0 0 80px;
  width: 80px;
  height: 80px;
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border: 1px solid var(--color-border);
}

.feature-text {
  flex: 1;
  text-align: left;
}

.feature-text h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-text p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .feature-row,
  .feature-row.reverse {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }

  .feature-text {
    text-align: center;
  }
}

/* ---- Screenshots Carousel ---- */
.screenshots-section {
  padding: 60px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.carousel-container {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.carousel-slide {
  flex: 0 0 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
}

.carousel-slide .device-frame {
  position: relative;
  background: linear-gradient(145deg, #1a2540, #0d1528);
  border-radius: 36px;
  padding: 10px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 30px rgba(46, 121, 247, 0.08);
  border: 2px solid rgba(58, 74, 107, 0.3);
  max-width: 260px;
}

.carousel-slide .device-frame img {
  width: 100%;
  border-radius: 26px;
  display: block;
  max-height: 350px;
  object-fit: cover;
  filter: blur(5px);
  transition: filter 0.3s ease;
}

.carousel-slide .device-frame img.loaded {
  filter: blur(0);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 5;
}

.carousel-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.carousel-btn.prev {
  left: 8px;
}

.carousel-btn.next {
  right: 8px;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.carousel-dot.active {
  background: var(--color-primary);
  transform: scale(1.2);
}

@media (max-width: 768px) {
  .carousel-slide .device-frame {
    max-width: 200px;
  }

  .carousel-slide .device-frame img {
    max-height: 280px;
  }
}

/* ---- Lightbox ---- */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--border-radius);
  box-shadow: 0 0 40px rgba(46, 121, 247, 0.2);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- CTA Section ---- */
.cta-section {
  text-align: center;
  padding: 80px 24px;
  max-width: 700px;
  margin: 0 auto;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid rgba(46, 121, 247, 0.1);
  padding: 48px 24px 32px;
  background: var(--color-surface-darker);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: 12px;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(58, 74, 107, 0.3);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

/* ---- Content Pages (Privacy, Terms, Contact) ---- */
.page-header {
  padding: 100px 24px 40px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-header p {
  color: var(--color-text-secondary);
}

.content-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.content-container h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--color-primary-light);
}

.content-container h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 12px;
}

.content-container p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  text-align: left;
  line-height: 1.7;
}

.content-container ul,
.content-container ol {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  padding-left: 24px;
  text-align: left;
}

.content-container li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.content-container a {
  color: var(--color-primary-light);
}

/* ---- Contact Form ---- */
.contact-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  text-align: left;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-surface-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(46, 121, 247, 0.15);
}

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

.form-group input[type="file"] {
  padding: 10px;
  cursor: pointer;
}

.form-group input[type="file"]::file-selector-button {
  background: var(--color-primary-dark);
  color: var(--color-text-primary);
  border: none;
  padding: 6px 14px;
  border-radius: 6px;
  font-family: var(--font-family);
  font-size: 0.85rem;
  cursor: pointer;
  margin-right: 10px;
}

.form-success {
  display: none;
  text-align: center;
  padding: 32px;
}

.form-success svg {
  width: 48px;
  height: 48px;
  color: var(--color-secondary);
  margin-bottom: 16px;
}

.form-success h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.form-success p {
  color: var(--color-text-secondary);
}

/* ---- Privacy Accept Button ---- */
.privacy-accept-btn {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1500;
  padding: 16px 24px 24px;
  display: flex;
  justify-content: center;
  background: linear-gradient(to top, var(--color-bg-start) 60%, transparent 100%);
}

.privacy-accept-btn.hidden {
  display: none;
}

.accept-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 48px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-family);
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(46, 121, 247, 0.4);
  transition: all 0.25s ease;
  width: 100%;
  max-width: 400px;
}

.accept-btn:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(46, 121, 247, 0.5);
}

/* ---- Utilities ---- */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.mt-4 {
  margin-top: 32px;
}

.mb-4 {
  margin-bottom: 32px;
}

/* ---- Scroll Animation ---- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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