:root {
    --primary: #E63946;
    --secondary: #1D3557;
    --dark: #121212;
    --light: #F1FAEE;
    --gray: #457B9D;
    --font-en: 'Outfit', sans-serif;
    --font-ta: 'Noto Sans Tamil', sans-serif;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --glass: rgba(255, 255, 255, 0.9);
}

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

body {
    font-family: var(--font-en);
    background-color: #f8f9fa;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

body.font-tamil {
    font-family: var(--font-ta);
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
}

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

.btn-whatsapp {
    background-color: #25D366;
    color: white;
}

/* Header */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 100px;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(29, 53, 87, 0.9), rgba(29, 53, 87, 0.8)), url('../assets/hero_cctv.png');
    background-size: cover;
    background-position: center;
    color: white;
    padding-top: 140px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, #a8dadc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #f1faee;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    min-width: 220px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

/* Services */
.services {
    padding: 100px 0;
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--secondary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 15px auto 0;
    border-radius: 2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.icon-box {
    width: 70px;
    height: 70px;
    background: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--primary);
    font-size: 1.8rem;
}

.service-card h3 {
    margin-bottom: 15px;
    color: var(--secondary);
}

/* Clients */
.clients {
    padding: 80px 0;
    background: #f8f9fa;
}

.clients-grid {
    /* Removed in favor of marquee */
    display: none;
}

.marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 20px 0;
}

.marquee-track {
    display: flex;
    gap: 40px;
    width: max-content;
    animation: scroll 20s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-50% - 20px));
        /* -50% of track which includes one set + half gap */
    }
}

.client-logo {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    width: 200px;
    height: 160px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s;
    user-select: none;
}

.client-logo:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.client-logo img {
    max-width: 100%;
    max-height: 80px;
    margin-bottom: 10px;
    object-fit: contain;
}

.client-logo p {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary);
    margin: 0;
}

/* About */
.about {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-img img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Sticky Buttons */
.sticky-actions {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.fab {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
}

.fab:hover {
    transform: scale(1.1);
}

.fab-call {
    background: var(--secondary);
}

.fab-whatsapp {
    background: #25D366;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

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

    .sticky-actions {
        bottom: 20px;
        right: 20px;
    }

    .fab {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Contact / Footer */
footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    margin-bottom: 20px;
    color: white;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 30px;
    height: 2px;
    background: var(--primary);
}

.contact-info li {
    list-style: none;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #bbb;
}

.contact-info i {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #777;
    font-size: 0.9rem;
}


@media (max-width: 768px) {

    /* Header Responsive: Stack Logo and Links */
    nav {
        flex-direction: column;
        gap: 15px;
        padding: 10px 0;
    }

    .nav-links {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .nav-links li {
        margin: 0 5px;
    }

    /* Adjust Hero for taller header */
    .hero {
        padding-top: 180px;
        /* More space for stacked header */
        height: auto;
        min-height: 100vh;
        padding-bottom: 50px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    /* Stack Hero Buttons */
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }

    .hero-buttons .btn {
        width: 100%;
        min-width: unset;
        /* Allow full width */
    }

    /* About Grid Stack */
    .about-grid {
        grid-template-columns: 1fr;
    }

    .sticky-actions {
        bottom: 20px;
        right: 20px;
    }

    .fab {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* Check List Utility */
.check-list {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.check-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 500;
    color: var(--secondary);
}

.check-item i {
    color: var(--primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}
/* Welcome Popup */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none; /* Hidden by default */
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.popup-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    background: white;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    animation: zoomIn 0.3s ease;
}

.popup-content img {
    max-width: 100%;
    max-height: 80vh;
    display: block;
    border-radius: 5px;
}

.close-btn {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 35px;
    height: 35px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s;
}

.close-btn:hover {
    transform: scale(1.1);
    background: var(--dark);
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}