/* O₂MODA Brand Colors - Tech Edition */
:root {
  --color-primary-light: #59C1CD;
  --color-primary-dark: #00A0B2;
  --color-accent-purple: #8B5FFF;
  --color-accent-pink: #FF6B9D;
  --color-dark: #0A1628;
  --color-darker: #050A12;
  --color-light-gray: #F4F7F8;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-border: #ddd;
  --color-success: #00A0B2;
  --color-glow: rgba(0, 160, 178, 0.3);
  --color-glow-purple: rgba(139, 95, 255, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: #fff;
}

/* Navigation */
nav {
  background: linear-gradient(180deg, rgba(10,22,40,0.98) 0%, rgba(5,10,18,0.95) 100%);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,160,178,0.08);
  border-bottom: 1px solid rgba(0,160,178,0.1);
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--color-primary-light);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo:hover {
  color: var(--color-primary-dark);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.3s;
  position: relative;
  padding: 0.5rem 0;
}

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

nav li > a:not(.logo)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary-light));
  transition: width 0.3s ease-out;
}

nav li > a:not(.logo):hover::after {
  width: 100%;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-darker) 0%, var(--color-dark) 50%, var(--color-primary-dark) 100%);
  color: white;
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0,160,178,0.1) inset;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(139,95,255,0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(0,160,178,0.1) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero h1 {
  font-size: 3.2rem;
  margin-bottom: 1rem;
  font-weight: 800;
  letter-spacing: -1px;
  animation: slideInDown 0.8s ease-out;
  background: linear-gradient(135deg, white 0%, rgba(255,255,255,0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
  animation: slideInUp 0.8s ease-out 0.2s backwards;
  line-height: 1.5;
}

.hero .subtitle {
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
  opacity: 0.85;
  animation: slideInUp 0.8s ease-out 0.4s backwards;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.cta-button {
  background: linear-gradient(135deg, white 0%, rgba(244,247,248,0.9) 100%);
  color: var(--color-primary-dark);
  padding: 0.9rem 2.2rem;
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(0,160,178,0.1);
  position: relative;
  overflow: hidden;
}

.cta-button:hover {
  background: linear-gradient(135deg, white 0%, white 100%);
  transform: translateY(-3px);
  box-shadow: 0 12px 25px rgba(0,160,178,0.25);
}

.cta-button-secondary {
  background-color: transparent;
  color: white;
  border: 2px solid white;
  padding: 0.8rem 2rem;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  text-decoration: none;
  margin-left: 1rem;
}

.cta-button-secondary:hover {
  background-color: white;
  color: var(--color-primary-dark);
}

/* Section Styles */
section {
  padding: 4rem 0;
}

section.light-bg {
  background-color: var(--color-light-gray);
}

section h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  color: var(--color-dark);
  text-align: center;
  font-weight: 800;
  letter-spacing: -1px;
  position: relative;
  display: inline-block;
  width: 100%;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

section .section-subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.product-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(244,247,248,0.9) 100%);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  animation: slideInUp 0.6s ease-out;
}

.product-card:hover {
  box-shadow: 0 20px 40px rgba(0,160,178,0.15), 0 0 30px rgba(0,160,178,0.08);
  transform: translateY(-8px);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(244,247,248,0.95) 100%);
}

.product-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background-color: var(--color-light-gray);
}

.product-card .card-content {
  padding: 1.5rem;
}

.product-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.product-card .model {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.product-card .tagline {
  color: var(--color-primary-dark);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.product-card .price {
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.product-card .category {
  display: inline-block;
  background-color: var(--color-light-gray);
  color: var(--color-text-light);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.product-card .card-link {
  display: inline-block;
  color: var(--color-primary-dark);
  text-decoration: none;
  font-weight: 600;
  margin-top: 1rem;
  transition: color 0.3s;
}

.product-card .card-link:hover {
  color: var(--color-primary-light);
}

/* Product Detail Page */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  margin: 3rem 0;
}

.product-detail-image {
  width: 100%;
}

.product-detail-image img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  background-color: var(--color-light-gray);
}

.product-detail-info h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.product-detail-info .model {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.product-detail-info .tagline {
  color: var(--color-primary-dark);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.product-detail-info .price {
  font-size: 2rem;
  color: var(--color-primary-dark);
  font-weight: bold;
  margin-bottom: 1.5rem;
}

.product-detail-info .category {
  display: inline-block;
  background-color: var(--color-light-gray);
  color: var(--color-text-light);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.product-features {
  margin-bottom: 2rem;
}

.product-features h3 {
  font-size: 1.2rem;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.product-features ul {
  list-style: none;
  margin-left: 0;
}

.product-features li {
  padding: 0.7rem 0 0.7rem 2rem;
  position: relative;
  color: var(--color-text);
  line-height: 1.8;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.product-features li:before {
  content: "✓";
  position: absolute;
  left: 0.3rem;
  color: var(--color-primary-dark);
  font-weight: bold;
  font-size: 1.2rem;
}

/* Specification Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.spec-table th,
.spec-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid rgba(0,160,178,0.1);
}

.spec-table th {
  background: linear-gradient(135deg, rgba(0,160,178,0.1) 0%, rgba(89,193,205,0.1) 100%);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.spec-table tr:hover {
  background-color: rgba(89,193,205,0.05);
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-highlight {
  background-color: #fff3cd;
  color: #856404;
  font-weight: 600;
}

/* Usage Steps */
.usage-steps {
  background-color: var(--color-light-gray);
  padding: 2rem;
  border-radius: 8px;
  margin: 2rem 0;
}

.usage-steps h3 {
  font-size: 1.1rem;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.step {
  display: flex;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.step-number {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
  color: var(--color-text);
  line-height: 1.8;
}

/* Warranty Content */
.warranty-section {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.warranty-section h3 {
  font-size: 1.3rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
  font-weight: 600;
}

.warranty-section ul {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.warranty-section li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
  color: var(--color-text-light);
  line-height: 1.8;
}

.warranty-section li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-primary-dark);
  font-weight: bold;
}

/* Compliance Notice - Minimal */
.compliance-notice {
  background: transparent;
  border: none;
  border-left: none;
  padding: 1rem 0;
  margin: 3rem 0 0 0;
  border-radius: 0;
  color: #999;
  font-size: 0.75rem;
  line-height: 1.6;
  backdrop-filter: none;
  opacity: 0.7;
  margin-top: auto;
}

.compliance-notice strong {
  color: #999;
  font-weight: 500;
}

/* Download Manual Button */
.download-manual {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  color: white;
  padding: 1rem 2.2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  text-decoration: none;
  margin-top: 1.5rem;
  box-shadow: 0 4px 15px rgba(0,160,178,0.2);
  position: relative;
  overflow: hidden;
}

.download-manual::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.download-manual:hover::before {
  width: 300px;
  height: 300px;
}

.download-manual:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,160,178,0.4);
}

/* Modal / Popup */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  animation: fadeIn 0.3s;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  position: relative;
}

.modal-close {
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-light);
  border: none;
  background: none;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-title {
  font-size: 1.8rem;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
  margin-right: 2rem;
}

/* Footer */
footer {
  background: linear-gradient(180deg, var(--color-dark) 0%, var(--color-darker) 100%);
  border-top: 1px solid rgba(0,160,178,0.1);
  color: white;
  text-align: center;
  padding: 3rem 2rem;
  margin-top: 4rem;
  font-size: 0.95rem;
}

footer a {
  color: var(--color-primary-light);
  text-decoration: none;
}

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

/* About Page */
.about-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
  margin-bottom: 3rem;
}

.about-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.about-section {
  margin-bottom: 3rem;
}

.about-section h2 {
  font-size: 1.8rem;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
}

.about-section p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.value-card {
  background: linear-gradient(135deg, rgba(244,247,248,0.8) 0%, rgba(89,193,205,0.05) 100%);
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid rgba(0,160,178,0.1);
  border-top: 3px solid var(--color-primary-dark);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(5px);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,160,178,0.1);
  border-top-color: var(--color-primary-light);
}

.value-card h3 {
  font-size: 1.3rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.value-card p {
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* Placeholder Section */
.coming-soon {
  background-color: var(--color-light-gray);
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  margin: 2rem 0;
  color: var(--color-text-light);
  display: none;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1.1rem;
  }

  nav ul {
    gap: 1rem;
  }

  nav a {
    font-size: 0.85rem;
  }

  .product-detail {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  section h2 {
    font-size: 1.8rem;
  }

  .cta-button-secondary {
    display: block;
    margin: 1rem auto 0;
  }

  nav .container {
    padding: 0 1rem;
  }

  .container {
    padding: 0 1rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 160, 178, 0.3), 0 0 40px rgba(0, 160, 178, 0.1);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 160, 178, 0.5), 0 0 60px rgba(0, 160, 178, 0.2);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes floatIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}