/* 5G Coverage Australia - Tech Infrastructure Theme */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-white: #ffffff;
    --text-graphite: #2d2d2d;
    --accent-blue: #0047ab;
    --accent-blue-light: #e6f0ff;
    --divider-grey: #e0e0e0;
    --text-light: #666666;
    --hover-blue: #003380;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-white);
    color: var(--text-graphite);
    line-height: 1.6;
    font-size: 16px;
}

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

/* Header */
header {
    background-color: var(--bg-white);
    border-bottom: 3px solid var(--accent-blue);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--accent-blue);
    text-decoration: none;
}

/* Navigation */
nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    color: var(--text-graphite);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    font-size: 15px;
}

nav a:hover,
nav a.active {
    color: var(--accent-blue);
}

/* Mobile Navigation */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
}

/* Sections */
section {
    padding: 60px 0;
    border-bottom: 1px solid var(--divider-grey);
}

section:last-of-type {
    border-bottom: none;
}

/* Headings */
h1 {
    font-size: 42px;
    color: var(--text-graphite);
    margin-bottom: 20px;
    font-weight: 700;
}

h2 {
    font-size: 32px;
    color: var(--accent-blue);
    margin-bottom: 25px;
    font-weight: 600;
}

h3 {
    font-size: 24px;
    color: var(--text-graphite);
    margin-bottom: 15px;
    font-weight: 600;
}

/* Paragraphs */
p {
    margin-bottom: 20px;
    color: var(--text-light);
}

/* Lists */
ul, ol {
    margin-bottom: 20px;
    padding-left: 25px;
}

li {
    margin-bottom: 12px;
    color: var(--text-light);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--accent-blue-light) 0%, var(--bg-white) 100%);
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 30px;
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.card {
    background: var(--bg-white);
    border: 1px solid var(--divider-grey);
    border-radius: 8px;
    padding: 30px;
    transition: box-shadow 0.3s;
}

.card:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.card h3 {
    color: var(--accent-blue);
}

/* Disclaimer Box */
.disclaimer {
    background-color: var(--accent-blue-light);
    border-left: 4px solid var(--accent-blue);
    padding: 20px;
    margin: 40px 0;
    border-radius: 4px;
}

.disclaimer p {
    color: var(--text-graphite);
    margin-bottom: 0;
    font-size: 14px;
}

/* FAQ Section */
.faq-item {
    margin-bottom: 30px;
    border: 1px solid var(--divider-grey);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    background-color: var(--accent-blue-light);
    padding: 20px;
    font-weight: 600;
    color: var(--accent-blue);
    cursor: pointer;
}

.faq-answer {
    padding: 20px;
    background-color: var(--bg-white);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 30px 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-graphite);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--divider-grey);
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px var(--accent-blue-light);
}

button[type="submit"] {
    background-color: var(--accent-blue);
    color: white;
    padding: 14px 30px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

button[type="submit"]:hover {
    background-color: var(--hover-blue);
}

/* Contact Info */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.contact-info-item {
    padding: 20px;
    background-color: var(--accent-blue-light);
    border-radius: 8px;
}

.contact-info-item h4 {
    color: var(--accent-blue);
    margin-bottom: 10px;
}

/* Footer */
footer {
    background-color: var(--text-graphite);
    color: white;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    color: var(--accent-blue);
    margin-bottom: 15px;
    font-size: 18px;
}

.footer-section ul {
    list-style: none;
    padding-left: 0;
}

.footer-section a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--accent-blue-light);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    h1 {
        font-size: 32px;
    }
    
    h2 {
        font-size: 26px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    section {
        padding: 40px 0;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Performance */
img {
    max-width: 100%;
    height: auto;
}