:root {
    --primary-color: #f57c00; /* Construction Orange */
    --primary-dark: #ef6c00;
    --secondary-color: #222222; /* Dark Grey */
    --secondary-light: #333333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --text-color: #333333;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --font-heading: 'Roboto', sans-serif; /* Example standard web font */
    --font-body: 'Open Sans', sans-serif;
}

body {
    font-family: var(--font-body);
    color: var(--text-color);
    line-height: 1.6;
    padding-top: 76px; /* Space for fixed header */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--secondary-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

/* Utilities */
.text-primary { color: var(--primary-color) !important; }
.bg-primary { background-color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
    padding: 10px 25px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 10px 25px;
    font-weight: 600;
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.section-padding {
    padding: 80px 0;
}

.section-title {
    margin-bottom: 50px;
    text-align: center;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 10px auto 0;
}

/* Header */
.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    background-color: var(--white);
    padding: 15px 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.navbar-brand span {
    color: var(--primary-color);
}

.nav-link {
    font-weight: 600;
    color: var(--secondary-color) !important;
    margin-left: 15px;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
}

.header-phone {
    font-weight: 700;
    margin-right: 20px;
    color: var(--secondary-color);
    display: none;
}

@media (min-width: 992px) {
    .header-phone {
        display: inline-block;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    color: var(--white);
    padding: 150px 0;
    text-align: center;
}

.hero h1 {
    color: var(--white);
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Services Cards */
.service-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    height: 100%;
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--primary-color);
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Feature Projects */
.project-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.project-img {
    height: 250px;
    background-color: #ddd;
    background-size: cover;
    background-position: center;
}

.project-info {
    padding: 20px;
    background: var(--white);
    border-top: 1px solid var(--border-color);
}

/* Calculator Preview */
.calc-preview {
    background-color: var(--light-bg);
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: #aaaaaa;
    padding: 60px 0 20px;
}

footer h4 {
    color: var(--white);
    margin-bottom: 25px;
    font-size: 1.2rem;
}

footer a {
    color: #aaaaaa;
}

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

.footer-bottom {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #444;
    text-align: center;
}

/* Floating WhatsApp */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 20px;
    right: 20px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.whatsapp-float:hover {
    background-color: #20ba5a;
    color: #FFF;
}

/* Contact Form */
.form-control {
    padding: 12px;
    border-radius: 4px;
    border: 1px solid #ced4da;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(245, 124, 0, 0.25);
}

/* Breadcrumbs (for subpages) */
.page-header {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
    margin-bottom: 50px;
}

.page-header h1 {
    color: var(--white);
}

/* Mobile Nav Toggler matching brand color */
.navbar-toggler {
    border-color: transparent;
}
.navbar-toggler:focus {
    box-shadow: none;
}