/* ==========================================================================
   CSS Variables & Theme Configuration
   ========================================================================== */
:root {
    /* Color Palette - Premium Modern Corporate */
    --clr-primary: #0ea5e9;
    /* Deep Sky Blue */
    --clr-primary-dark: #0284c7;
    /* Darker Blue for hover */
    --clr-secondary: #0f172a;
    /* Very Dark Slate - Backgrounds */
    --clr-accent: #38bdf8;
    /* Light Blue for accents */

    --clr-text-main: #f8fafc;
    /* Almost white text for dark mode */
    --clr-text-muted: #94a3b8;
    /* Muted gray text */
    --clr-bg-main: #020617;
    /* Very dark background */
    --clr-bg-card: #1e293b;
    /* Card background */
    --clr-bg-card-hover: #334155;
    /* Card hover background */

    --clr-border: #334155;
    /* Subtle borders */

    /* Typography */
    --font-main: 'Inter', sans-serif;

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* Transitions & Shadows */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease-in-out;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.2);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* ==========================================================================
   Global Reset
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--clr-bg-main);
    color: var(--clr-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

img {
    max-width: 100%;
    display: block;
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */
h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.2;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--clr-text-main);
}

.section-description {
    color: var(--clr-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.divider {
    height: 4px;
    width: 60px;
    background: var(--clr-primary);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-sm);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    border: none;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.primary-btn {
    background-color: var(--clr-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.primary-btn:hover {
    background-color: var(--clr-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.secondary-btn {
    background-color: var(--clr-bg-card-hover);
    color: var(--clr-text-main);
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-sm);
}

.secondary-btn:hover {
    background-color: var(--clr-primary);
    border-color: var(--clr-primary);
    transform: translateY(-2px);
}

.outline-btn {
    background-color: transparent;
    color: var(--clr-text-main);
    border: 2px solid var(--clr-border);
}

.outline-btn:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary);
}

.full-width {
    width: 100%;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.main-header {
    background-color: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--clr-border);
    transition: padding var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.brand-logo img {
    height: 40px;
}

.nav-menu {
    flex-grow: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--clr-text-muted);
    position: relative;
    padding: 0.5rem 0.25rem;
    background-color: transparent;
    transition: all var(--transition-normal);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.1); /* Subtle persistent underline */
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 4px;
    background-color: var(--clr-primary);
    border-radius: 2px;
    transition: width var(--transition-normal);
    z-index: 1;
}

.nav-link:hover {
    color: var(--clr-text-main);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.nav-link:hover::before {
    background-color: rgba(255, 255, 255, 0.2);
}

.nav-link:hover::after {
    width: 100%;
    box-shadow: var(--shadow-glow);
}

.nav-link:active::after {
    background-color: var(--clr-accent);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    color: var(--clr-text-main);
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-showcase {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding-top: 80px;
    /* Adding the background image along with a base color */
    background: url('../images/mod1tec install.webp') no-repeat center center/cover;
    background-color: var(--clr-bg-main);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Layer 1: The Dark Radial Gradient to make text readable */
    /* Layer 2: A linear gradient with your blue/slate accent colors on top of the image */
    background:
        radial-gradient(circle at center, transparent 0%, rgba(2, 6, 23, 0.85) 100%),
        linear-gradient(135deg, rgba(2, 6, 23, 0.7) 0%, rgba(15, 23, 42, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(to right, #fff, var(--clr-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--clr-text-muted);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Services Grid
   ========================================================================== */
.services-section {
    padding: var(--spacing-xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--clr-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--clr-primary);
}

.card-image-wrapper {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .card-image {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--clr-accent);
}

/* ==========================================================================
   Product Catalog
   ========================================================================== */
.catalog-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--clr-secondary);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.product-card {
    background-color: var(--clr-bg-main);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.featured-product {
    box-shadow: var(--shadow-glow);
    border-color: rgba(14, 165, 233, 0.4);
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--clr-bg-card);
    color: var(--clr-text-main);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
    border: 1px solid var(--clr-border);
}

.product-badge.premium {
    background-color: var(--clr-primary);
    border-color: var(--clr-primary);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-info {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-name {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.product-details {
    color: var(--clr-text-muted);
    margin-bottom: var(--spacing-md);
}

.product-features {
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.product-features li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--clr-text-muted);
}

.product-features li i {
    color: var(--clr-primary);
}

/* ==========================================================================
   Clients
   ========================================================================== */
.clients-banner {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--clr-bg-main) 0%, var(--clr-secondary) 100%);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.clients-list {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 3rem;
    margin-top: 3rem;
}

.client-card {
    position: relative;
    width: 260px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--clr-border);
    overflow: hidden;
    text-decoration: none;
    transition: all 0.4s ease;
}

.client-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.15;
    filter: grayscale(100%);
    transition: all 0.4s ease;
    z-index: 1;
    padding: 1.5rem;
    background-origin: content-box;
}

.client-card:hover {
    transform: translateY(-8px);
    border-color: var(--clr-primary);
    background-color: rgba(15, 23, 42, 0.9);
    box-shadow: var(--shadow-glow);
}

.client-card:hover .client-bg {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.05);
}

.client-name {
    position: relative;
    z-index: 2;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--clr-text-main);
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.9);
    transition: all 0.4s ease;
}

.client-card:hover .client-name {
    opacity: 0;
    transform: translateY(20px);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
    padding: var(--spacing-xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    background-color: var(--clr-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    overflow: hidden;
}

.contact-info {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--clr-secondary) 0%, var(--clr-bg-card) 100%);
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.contact-info p {
    color: var(--clr-text-muted);
    margin-bottom: var(--spacing-lg);
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-details-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.1rem;
}

.contact-details-list li i {
    color: var(--clr-primary);
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.contact-details-list a:hover {
    color: var(--clr-primary);
}

.contact-form-container {
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--clr-text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--clr-border);
    background-color: var(--clr-bg-main);
    color: var(--clr-text-main);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.submit-btn {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.main-footer {
    background-color: #000;
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--clr-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--clr-text-muted);
    font-size: 0.9rem;
}

/* ==========================================================================
   Utility Classes & Animations
   ========================================================================== */
.text-center {
    text-align: center;
}

/* Scroll Reveal Initial States */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive Design (Mobile First principles adjusted for desktop focus)
   ========================================================================== */
@media (max-width: 900px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-info,
    .contact-form-container {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: var(--spacing-xl);
        transition: left var(--transition-normal);
        border-top: 1px solid var(--clr-border);
        z-index: 999;
        /* Fix for Chrome mobile touch interception */
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .contact-btn {
        display: none;
        /* Hide on small screens to save header space */
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}