:root {
  --twizbit-primary: #00ff88;
  --twizbit-dark: #0a0a0a;
  --twizbit-gray: #6b7280;
  --twizbit-bg: #0f0f10;
  --twizbit-card-bg: #1a1b1c;
  --twizbit-accent: #00ff88;
}

body {
  background: var(--twizbit-dark);
  font-family: 'Inter', 'Open Sans', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: #e5e7eb;
  margin: 0;
  padding: 0;
}

/* Navigation */
.navbar {
  background: rgba(10, 10, 10, 0.95) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 255, 136, 0.1);
  padding: 16px 32px;
}

.navbar-brand {
  transition: opacity 0.3s ease;
}

.navbar-brand:hover {
  opacity: 0.8;
}

.navbar-nav .nav-link {
  color: #e5e7eb !important;
  font-weight: 500;
  font-size: 16px;
  padding: 8px 16px;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--twizbit-accent) !important;
}

.navbar-nav .nav-item.active .nav-link {
  color: var(--twizbit-accent) !important;
  text-decoration: underline;
}

/* Main Content */
.main-content {
  min-height: 70vh;
  padding: 40px 24px;
}

/* Hero Section */
.hero {
  width: 100%;
  padding: 8vh 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
}

.hero-card {
  background: linear-gradient(180deg, var(--twizbit-card-bg), #0f0f10);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0, 255, 136, 0.1);
}

.hero h1 {
  font-weight: 800;
  font-size: clamp(32px, 3.6vw, 48px);
  line-height: 1.05;
  color: #fff;
  margin: 0 0 12px 0;
  letter-spacing: -0.02em;
}

.hero p.lead {
  color: #d1d5db;
  font-size: clamp(16px, 1.6vw, 18px);
  margin: 0 0 8px 0;
}

.hero .trust {
  font-size: 13px;
  color: #9ca3af;
  margin-bottom: 24px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--twizbit-accent);
  color: #000;
  border-radius: 999px;
  border: 1px solid var(--twizbit-accent);
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.15s ease, opacity 0.15s ease;
  cursor: pointer;
}

.btn-cta:hover {
  transform: translateY(-1px);
  opacity: 0.92;
  color: #000;
}

.btn-ghost {
  background: transparent;
  color: var(--twizbit-accent);
  border: 1px solid var(--twizbit-accent);
}

.btn-ghost:hover {
  background: rgba(0, 255, 136, 0.1);
  color: var(--twizbit-accent);
}

.hero-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}


.hero-badge {
  font-size: 12px;
  color: var(--twizbit-gray);
}

/* Product Card */
.product-card {
  background: linear-gradient(180deg, var(--twizbit-card-bg), #0f0f10);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 28px;
  box-shadow: 0 20px 50px rgba(0, 255, 136, 0.15), inset 0 1px 0 rgba(0, 255, 136, 0.04);
  padding: 24px;
  color: #e5e7eb;
  display: grid;
  gap: 16px;
  align-items: start;
  overflow: hidden;
}

.product-card img {
  width: 100%;
  border-radius: 16px;
  transition: transform 0.3s ease;
}

.product-card:hover img {
  transform: scale(1.05);
}

.product-card .logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

.product-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric {
  background: rgba(0, 255, 136, 0.05);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}

.metric .label {
  font-size: 12px;
  color: #9ca3af;
}

.metric .value {
  font-size: 18px;
  font-weight: 700;
  color: var(--twizbit-accent);
}

/* Features */
.features {
  max-width: 1120px;
  margin: 40px auto 0;
  padding: 0 24px 24px 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature {
  background: var(--twizbit-card-bg);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 10px 20px rgba(0, 255, 136, 0.1);
}

.feature h3 {
  font-size: 16px;
  margin: 0 0 6px 0;
  color: var(--twizbit-accent);
}

.feature p {
  font-size: 14px;
  color: #d1d5db;
  margin: 0;
}

/* Content Wrap */
.content-wrap {
  max-width: 900px;
  margin: 32px auto 0;
  padding: 0 24px;
}

.content-wrap h2 {
  color: var(--twizbit-accent);
  margin-top: 24px;
}

.content-wrap h3 {
  color: #fff;
  margin-top: 20px;
}

.content-wrap p,
.content-wrap li {
  color: #d1d5db;
  line-height: 1.6;
}

.faq-item {
  padding: 12px 0;
  border-bottom: 1px solid rgba(0, 255, 136, 0.1);
}

.faq-item h3 {
  margin-top: 16px;
}

/* Footer */
footer {
  margin-top: 48px;
  text-align: center;
  padding: 24px;
  border-top: 1px solid rgba(0, 255, 136, 0.1);
  color: #9ca3af;
}

footer a {
  color: var(--twizbit-accent);
  text-decoration: none;
  margin: 0 12px;
}

footer a:hover {
  text-decoration: underline;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  place-items: center;
  z-index: 1000;
}

.modal-overlay.active {
  display: grid;
}

.modal-dialog {
  width: min(600px, 92vw);
  background: var(--twizbit-card-bg);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(0, 255, 136, 0.1);
}

.modal-title {
  font-weight: 700;
  margin: 0;
  color: #fff;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: #9ca3af;
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--twizbit-accent);
}

.modal-body {
  width: 100%;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
}

.modal-body input {
  padding: 12px;
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 8px;
  font-size: 16px;
  background: rgba(0, 0, 0, 0.3);
  color: #fff;
}

.modal-body input:focus {
  outline: none;
  border-color: var(--twizbit-accent);
}

.error-text {
  font-size: 12px;
  color: #ff4444;
  display: none;
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .navbar {
    padding: 12px 16px;
  }
}

/* Video Container */
.video-container {
  position: relative;
  width: 100%;
  max-width: 600px;
  margin: 24px auto;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(0, 255, 136, 0.2);
}

.video-container video {
  width: 100%;
  display: block;
}

/* Glow effect for LED theme */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.6);
  }
}

.glow {
  animation: glow 2s ease-in-out infinite;
}