:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --light-bg: #f8f9fa;
  --dark-text: #343a40;
  --white-text: #ffffff;
  --border-radius: 5px;
  --spacing-unit: 20px;
}

body {
  font-family: 'Open Sans', sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--light-bg);
  color: var(--dark-text);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

header {
  background-color: #000;
  color: var(--white-text);
  padding: var(--spacing-unit) 0;
  border-bottom: 3px solid #f8f9fa;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.8em;
  font-weight: 700;
  color: var(--white-text);
  text-decoration: none;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

nav ul li {
  margin-left: var(--spacing-unit);
}

nav ul li a {
  color: var(--white-text);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

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

.hero {
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.7)), url('https://via.placeholder.com/1500x800/343a40/ffffff?text=Phantom+Zero+Hero+Image') no-repeat center center/cover;
  color: var(--white-text);
  text-align: center;
  padding: 100px 0;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 3.5em;
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
  font-size: 1.2em;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--white-text);
  padding: 12px 25px;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
  margin: 0 10px;
}

.btn:hover {
  background-color: #0056b3;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #545b62;
}

section {
  padding: 80px 0;
  text-align: center;
}

section:nth-of-type(even) {
  background-color: var(--light-bg);
}

section:nth-of-type(odd) {
  background-color: var(--white-text);
}

h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5em;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-unit);
  margin-top: 40px;
}

.product-card {
  background-color: var(--white-text);
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  padding: var(--spacing-unit);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.product-card img {
  max-width: 100%;
  height: 200px;
  object-fit: contain;
  border-radius: var(--border-radius);
  margin-bottom: 15px;
}

.product-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5em;
  margin-bottom: 10px;
  color: var(--dark-text);
}

.product-card p {
  font-size: 0.95em;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.product-card .price {
  font-size: 1.2em;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.learn-more-content,
.contact-content {
  max-width: 800px;
  margin: 0 auto;
}

.learn-more-content p,
.contact-content p {
  margin-bottom: 25px;
  font-size: 1.1em;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 30px;
}

.contact-form input,
.contact-form textarea {
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: var(--border-radius);
  font-size: 1em;
}

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

.contact-form button {
  background-color: var(--primary-color);
  color: var(--white-text);
  padding: 15px 20px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1.1em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.contact-form button:hover {
  background-color: #0056b3;
}

footer {
  background-color: var(--dark-text);
  color: var(--white-text);
  text-align: center;
  padding: var(--spacing-unit) 0;
  margin-top: 50px;
  font-size: 0.9em;
}

/* Modern video slider */
.modern-video-slider {
  position: relative;
  max-width: 800px;
  margin: 60px auto 0;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.video-slide {
  display: none;
  width: 100%;
  height: 450px;
  background-color: #000;
}

.video-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-slide.active {
  display: block;
}

.video-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.6);
  border: none;
  color: #fff;
  font-size: 2rem;
  padding: 10px 16px;
  cursor: pointer;
  border-radius: 50%;
  z-index: 2;
  transition: background 0.3s ease;
}

.video-nav:hover {
  background: rgba(0, 0, 0, 0.9);
}

.video-nav.prev {
  left: 10px;
}

.video-nav.next {
  right: 10px;
}