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

body {
    font-family: 'Open Sans', sans-serif; /* Consistent body font */
    line-height: 1.6;
    color: #333;
    background-color: #f4f7f6; /* Light background for sections */
}

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

h1, h2, h3, h4 {
    font-family: 'Poppins', sans-serif; /* Consistent heading font */
    color: #003366; /* Dark blue */
    margin-bottom: 20px;
}

h1 { font-size: 2.8em; text-align: center; }
h2 { font-size: 2.2em; text-align: center; margin-top: 60px; }
h3 { font-size: 1.8em; margin-bottom: 25px; }
h4 { font-size: 1.4em; margin-bottom: 15px; }

p {
    margin-bottom: 15px;
    font-size: 1em;
}

a {
    color: #0056b3;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* Header Styles */
header {
    background-color: #003366; /* Dark blue */
    color: #fff;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h2 {
    color: #fff;
    margin: 0;
    font-size: 1.0em;
}

/* Desktop Navigation */
.desktop-nav {
    display: block; /* Show on desktop */
}

.desktop-nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.desktop-nav a {
    color: #fff;
    font-size: 1.1em;
    font-weight: 600;
    transition: color 0.3s ease;
}

.desktop-nav a:hover {
    color: #87cefa; /* Lighter blue on hover */
    text-decoration: none;
}


.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-phone {
    color: #fff;
    font-size: 1.1em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hamburger-menu {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.8em;
    cursor: pointer;
    display: none; /* Hidden on desktop */
}

/* Mobile Navigation */
.mobile-nav {
    display: none; /* Hidden by default */
    background-color: #004080; /* Slightly lighter blue */
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.mobile-nav.active {
    display: block;
}

.mobile-nav ul {
    list-style: none;
    padding: 10px 0;
}

.mobile-nav li a {
    display: block;
    padding: 10px 20px;
    color: #fff;
    font-size: 1.1em;
    transition: background-color 0.3s ease;
}

.mobile-nav li a:hover {
    background-color: #0056b3;
    text-decoration: none;
}

/* Hero Section */
.hero {
    /* Solid blue background as seen in the image */
    background-color: #007bff; /* A prominent blue */
    color: #fff;
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.3em;
    margin-bottom: 30px;
    font-weight: 300;
    color: #f0f8ff;
}

.call-to-action-block {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 25px 30px;
    border-radius: 10px;
    display: inline-block;
    margin-top: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.cta-text {
    font-size: 1.2em;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.large-call-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: #28a745; /* Green for call button */
    color: #fff;
    padding: 18px 35px;
    font-size: 1.6em;
    font-weight: bold;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.large-call-button:hover {
    background-color: #218838;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.3);
    text-decoration: none;
}

.toll-free-number {
    font-size: 0.9em;
    color: #ddd;
    margin-top: 10px;
}

/* Solutions Section */
.solutions-section {
    padding: 80px 20px;
    background-color: #ffffff;
    text-align: center;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.solution-item {
    background-color: #e0f2f7; /* Light blue */
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.solution-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.solution-icon {
    font-size: 3.5em;
    color: #007bff; /* Primary blue */
    margin-bottom: 20px;
}

/* Antivirus specific styles (used on antivirus.html and potentially index.html) */
.antivirus-services-section {
    padding: 80px 20px;
    background-color: #ffffff; /* White background */
    text-align: center;
}

.antivirus-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.service-card {
    background-color: #e0f2f7; /* Light blue */
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.service-card .icon {
    font-size: 3.5em;
    color: #007bff; /* Primary blue */
    margin-bottom: 20px;
}

.service-card h4 {
    color: #003366;
    margin-bottom: 10px;
    font-size: 1.6em;
}

.service-card p {
    font-size: 0.95em;
    color: #555;
}

.why-choose-antivirus {
    padding: 80px 20px;
    background-color: #f0f8ff; /* Very light blue */
    text-align: center;
}

.why-choose-antivirus .benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 40px auto 0;
}

.benefit-item {
    background-color: #ffffff;
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: #007bff;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.benefit-item:hover::before {
    transform: translateY(0);
}

.benefit-item h3 {
    color: #0056b3;
    margin-bottom: 15px;
}

/* Contact Section */
.contact-section {
    background-color: #ffffff;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
}

.contact-section h3 {
    color: #003366;
    font-size: 2em;
}

.contact-section p {
    font-size: 1.1em;
    margin-bottom: 20px;
}

.contact-number {
    font-size: 1.8em;
    font-weight: 700;
    color: #007bff;
}

/* Footer Styles */
footer {
    background-color: #003366;
    color: #fff;
    padding: 40px 20px;
    text-align: center;
    margin-top: 50px;
}

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 25px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-nav a {
    color: #87cefa;
    font-weight: 600;
    font-size: 0.95em;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: #fff;
    text-decoration: underline;
}

footer p {
    font-size: 0.9em;
    margin-bottom: 10px;
}

.disclaimer {
    font-size: 0.8em;
    color: #bbb;
    max-width: 800px;
    margin-top: 20px;
    line-height: 1.4;
}

/* Floating Call Button */
.floating-call-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #28a745; /* Green */
    color: #fff;
    padding: 15px 20px;
    border-radius: 50px;
    font-size: 1.1em;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: background-color 0.3s ease, transform 0.3s ease;
    z-index: 999;
    text-decoration: none;
}

.floating-call-button:hover {
    background-color: #218838;
    transform: translateY(-3px);
    text-decoration: none;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .desktop-nav {
        display: none; /* Hide desktop nav on mobile */
    }
    .header-phone {
        display: none; /* Hide phone number on smaller screens */
    }
    .hamburger-menu {
        display: block; /* Show hamburger icon */
    }
    .hero h2 {
        font-size: 2.5em;
    }
    .hero p {
        font-size: 1.1em;
    }
    .large-call-button {
        font-size: 1.4em;
        padding: 15px 25px;
    }
    .solution-grid, .antivirus-services-grid, .why-choose-antivirus .benefits-grid {
        grid-template-columns: 1fr;
    }
    .solution-item, .service-card, .benefit-item {
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    .footer-nav ul {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5em;
    }
    .hero h2 {
        font-size: 2em;
    }
    .hero p {
        font-size: 1em;
    }
    .large-call-button {
        font-size: 1.2em;
        padding: 12px 20px;
    }
    h3 {
        font-size: 1.5em;
    }
    .solution-item h4, .service-card h4 {
        font-size: 1.4em;
    }
    .contact-number {
        font-size: 1.5em;
    }
    .floating-call-button {
        padding: 12px 15px;
        font-size: 1em;
    }
}