/* ===================================
   Layout & Structure Styles
   Navigation, Hero, Sections, Grid
   =================================== */

/* Navigation Bar */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 3%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

nav.visible {
    opacity: 1;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-2xl);
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    cursor: pointer;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-secondary) 100%);
    color: white;
    padding: var(--spacing-xl) 3%;
    margin-top: 0;
    width: 100%;
    box-sizing: border-box;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    max-width: 1200px;
    width: 100%;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.hero-text .slogan {
    font-size: 1.2rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
}

.hero-text p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-xl);
}

.features-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.feature-item::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* Video/Carousel */
.hero-video {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 107, 53, 0.3);
    min-height: 400px;
}

.video-carousel {
    width: 100%;
    height: 100%;
    position: relative;
    background: #000;
}

.carousel-slide {
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    position: relative;
}

.carousel-slide.active {
    display: flex;
}

.carousel-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-md);
    z-index: 10;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #333 0%, #555 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
}

.play-icon {
    font-size: 3rem;
}

/* Sections */
section {
    padding: 4rem 3%;
    width: 100%;
    box-sizing: border-box;
}

section > * {
    max-width: 1400px;
    margin: 0 auto;
}

section.alt-bg {
    background: var(--color-bg-alt);
    width: 100%;
}

/* Page Visibility */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn var(--transition-slow);
}

/* Grids */
.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

/* Development Update Section */
.update-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}
    /* margin: 0 auto;
} */

.update-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.update-content p {
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.youtube-embed {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
    background: #1a1a1a;
    color: white;
    padding: var(--spacing-xl) 3%;
    text-align: center;
    margin-top: var(--spacing-3xl);
    width: 100%;
    box-sizing: border-box;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .usecases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

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

    .nav-menu {
        gap: var(--spacing-md);
        font-size: 0.85rem;
    }

    .update-container {
        grid-template-columns: 1fr;
    }

    .hero-video {
        min-height: 250px;
    }

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