/* --- Variables & Global Reset --- */
:root {
    --primary-color: #3B7ADF; /* Medium Blue */
    --primary-dark: #2A5A9E;
    --secondary-color: #FFC04C; /* Accent Gold/Orange */
    --text-dark: #333;
    --text-light: #f4f4f4;
    --bg-light: #f9f9f9;
    --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: white;
}

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

/* --- Typography --- */
h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.2;
}

h1 { font-size: 3em; color: var(--text-dark); }
h2 { font-size: 2.2em; text-align: center; margin-bottom: 50px; }
h3 { font-size: 1.5em; }

strong {
    color: var(--primary-color);
    font-weight: 800;
}

/* --- Buttons --- */
.primary-cta-btn, .secondary-cta-btn {
    display: inline-block;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 700;
    margin-top: 20px;
    border: none;
}

.primary-cta-btn {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 122, 223, 0.4);
}

.primary-cta-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 122, 223, 0.6);
}

.secondary-cta-btn {
    background: var(--secondary-color);
    color: var(--text-dark);
}

.secondary-cta-btn:hover {
    background: #e6b045;
}

/* --- 1. Header (Flashy and Popout) --- */
#main-header {
    background: white;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    box-shadow: var(--shadow-light); /* Adds the 'popout' effect */
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transform: translateY(-100%); /* Initial state for animation */
    transition: transform 0.6s ease-out; /* CSS Transition for animation */
}

#main-header.active {
    transform: translateY(0); /* Final state: visible */
}

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

.logo {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8em;
    font-weight: 800;
    color: var(--primary-color);
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: color 0.3s ease;
}

nav ul li a:hover, nav ul li a.cta-link {
    color: var(--primary-color);
}

/* --- 2. Hero Section --- */
#hero {
    padding: 150px 0 100px; /* Offset for fixed header */
    background: var(--bg-light);
}

.hero-section .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-content {
    flex: 1;
    max-width: 55%;
}

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

.subtitle {
    font-size: 1.25em;
    color: #555;
    margin-bottom: 30px;
}

.hero-image {
    flex: 1;
    min-height: 300px;
    background: #ccc; /* Placeholder style */
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    background-image: url('placeholder-construction-tech.jpg'); /* Replace with actual image/illustration */
    background-size: cover;
    background-position: center;
    background-color: var(--primary-color);
}

/* --- 3. Features Section --- */
#features {
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    text-align: center;
}

.feature-card {
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #ddd;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.feature-card i {
    font-size: 3em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
}

/* --- 4. Call-to-Action / Trust Section --- */
.cta-banner {
    background: var(--primary-color);
    color: var(--text-light);
    padding: 60px 0;
    text-align: center;
    background-image: linear-gradient(rgba(0,0,0,0.1), rgba(0,0,0,0.1)), url('bg-pattern.png'); /* Subtle background texture */
}

.cta-banner h3 {
    color: white;
    font-size: 2em;
    margin-bottom: 10px;
}

.cta-banner p {
    font-size: 1.1em;
    margin-bottom: 25px;
}

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

/* --- 5. Footer --- */
footer {
    background: var(--text-dark);
    color: #aaa;
    padding: 20px 0;
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9em;
}

.footer-links a {
    color: #aaa;
    text-decoration: none;
    margin-left: 20px;
}

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