:root {
    --color-bg: #0B0F19; /* Deep Space Black */
    --color-bg-alt: #131A2A;
    --color-primary: #00F0FF; /* Neon Cyan */
    --color-secondary: #2563EB; /* Tech Blue */
    --color-text: #E2E8F0;
    --color-text-muted: #94A3B8;
    --color-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(19, 26, 42, 0.6);
    --glass-blur: blur(12px);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s ease;
}

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

/* Utilities */
.text-gradient {
    background: linear-gradient(90deg, var(--color-primary), #8B5CF6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.w-full { width: 100%; display: block; }
.bg-darker { background-color: #070A11; }
.p-0 { padding: 0 !important; }
.p-4 { padding: 1.5rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    color: #000;
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: rgba(0, 240, 255, 0.1);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: #fff;
    backdrop-filter: var(--glass-blur);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.2);
}

/* Glassmorphism Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
}
.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
}
.logo img {
    height: 40px;
}
.nav-links {
    display: flex;
    gap: 2rem;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* Lang selector */
.lang-selector {
    position: relative;
}
.lang-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
}
.lang-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-top: 0.5rem;
    width: 150px;
    padding: 0.5rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}
.lang-selector.active .lang-dropdown {
    display: block;
}
.lang-dropdown a {
    display: block;
    padding: 0.5rem;
    color: var(--color-text-muted);
}
.lang-dropdown a:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}
.hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to right, rgba(11,15,25,0.95) 0%, rgba(11,15,25,0.6) 100%);
    z-index: -1;
}
.hero-content {
    max-width: 800px;
}
.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}
.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
}
.hero-cta {
    display: flex;
    gap: 1rem;
}

/* Single Page App Logic */
.page-section {
    display: none !important;
}
.page-section.active {
    display: block !important;
}
.hero.page-section.active {
    display: flex !important;
}

/* Sections */
.section {
    padding: 6rem 0;
    min-height: calc(100vh - 200px);
}
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}
.section-desc {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 4rem;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* About Us & Stats */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.about-text p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}
.about-text strong {
    color: var(--color-primary);
}
.stats {
    display: flex;
    gap: 2rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
}
.stat-item h4 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 0.2rem;
}
.stat-item p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}
.about-images {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.about-img-wrapper {
    overflow: hidden;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    background: var(--color-bg-alt);
}
.about-img-wrapper img {
    width: 100%;
    max-height: 350px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.about-img-wrapper:hover img {
    transform: scale(1.05);
}
@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Products */
.product-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.product-img {
    height: 250px;
    background-color: var(--color-bg-alt);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}
.product-img-contain {
    background-size: contain !important;
    background-color: #fff;
}
.product-info {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.product-spec {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}
.product-actions {
    margin-top: auto;
}

/* Forms */
input, textarea {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--color-border);
    padding: 0.75rem;
    border-radius: 8px;
    color: #fff;
    font-family: inherit;
    margin-bottom: 1rem;
}
input:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Footer */
.footer {
    background: var(--color-bg-alt);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.modal-overlay.active {
    display: flex;
}
.modal-content {
    width: 90%;
    max-width: 500px;
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}