:root {
    /* Colors */
    --color-primary: #2c3e50; /* Deep Charcoal */
    --color-secondary: #34495e; /* Wet Asphalt */
    --color-accent: #c0392b; /* Industrial Red */
    --color-accent-rgb: 192, 57, 43;
    --color-accent-hover: #a93226; /* Darker Red */
    --color-text: #333;
    --color-light-bg: #f9f9f9;
    --color-white: #ffffff;
    --color-border: #ddd;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-soft: 0 12px 32px rgba(0,0,0,0.06);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2.5rem;
    --spacing-lg: 5rem;
    --spacing-xl: 8rem;

    /* Borders */
    --radius-md: 6px;

    /* Typography */
    --font-main: 'Open Sans', Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    margin: 0;
    padding: 0;
    line-height: 1.7;
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

h2 {
    font-size: 2.2rem;
    position: relative;
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    text-align: center;
    letter-spacing: -0.01em;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin: var(--spacing-xs) auto 0;
    border-radius: 2px;
}

p {
    margin-bottom: var(--spacing-sm);
}

header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header > * {
    position: relative;
    z-index: 1;
}
header h1 {
    font-size: 2rem;
    margin-bottom: 0;
}
header p {
    font-size: 1.2rem;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.logo-wrapper {
    display: table;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 2px solid rgba(0, 0, 0, 0.2);
    box-shadow:
        0 4px 10px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    position: relative;
    z-index: 2;
}

header img {
    max-width: 150px;
    height: auto;
    display: block;
    margin: 0;
}
header nav {
    margin-top: var(--spacing-sm);
}
header nav a {
    color: var(--color-white);
    text-decoration: none;
    margin: 0 var(--spacing-sm);
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: color 0.3s;
}
header nav a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.header-contact {
    margin: 10px 0;
}
.header-contact a {
    color: var(--color-white);
    text-decoration: none;
    font-weight: bold;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}
.header-contact a:hover {
    color: var(--color-accent);
}

.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.7)), url('images/hero-image.webp') no-repeat center center;
    background-size: cover;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    text-align: center;
    position: relative;
}
.hero > div {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-white);
    text-shadow: 0 4px 12px rgba(0,0,0,0.4);
    margin-bottom: var(--spacing-md);
}
.hero h2::after {
    display: none; /* No underline in hero */
}
.cta {
    margin-top: var(--spacing-md);
}
.cta a {
    background: var(--color-accent);
    color: var(--color-white);
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
    text-decoration: none;
    font-weight: bold;
    border-radius: 50px; /* Rounded pill button */
    transition: background 0.3s ease, transform 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.3);
    display: inline-block;
}
.cta a:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.4);
}
section {
    padding: var(--spacing-xl) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}
#contact {
    background-color: var(--color-light-bg);
}
.services, .about {
    max-width: 1100px; /* Wider content area */
    margin: auto;
}
/* Services Section Background for Contrast */
.services {
    background-color: transparent;
}

/* Service Cards */
.service-item {
    background: var(--color-white);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0,0,0,0.05);
}

.service-item h3 {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-sm);
    margin-top: 0; /* Align with top of card */
}
.service-item ul {
    padding-left: 0; /* Remove default padding */
}
.service-item ul li {
    list-style: none;
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: 2rem;
}
.service-item ul li::before {
    content: '\2714'; /* Check icon */
    position: absolute;
    left: 0;
    color: var(--color-accent); /* Use accent color for checks */
    font-weight: bold;
}
.carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    overflow: hidden;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-xs);
    max-width: 100%;
}

.carousel img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all 0.4s ease;
}
.carousel img:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow-md);
}

.parallax {
    background: url('images/parallax-image.webp') no-repeat center center;
    background-size: cover;
    height: 350px;
    position: relative;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
}
/* Add an overlay to parallax for better text contrast if we add text later, or just for style */
.parallax::before {
    content: '';
    position: absolute;
    top:0; left:0; right:0; bottom:0;
    background: rgba(0,0,0,0.3);
}

footer {
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-sm);
    margin-top: 0; /* Remove margin, sections provide padding */
}
footer .footer-contact {
    margin: 0 auto var(--spacing-md);
    max-width: 800px;
    text-align: center; /* Center align footer text */
    padding: var(--spacing-md);
    background: rgba(255,255,255,0.03); /* Subtle background */
    border-radius: var(--radius-md);
}
footer .footer-contact p {
    margin: var(--spacing-xs) 0;
}
footer iframe {
    width: 100%;
    height: 350px;
    border: none;
    margin-top: var(--spacing-md);
    max-width: 1100px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9); /* Darker backdrop */
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-content {
    max-width: 90%;
    max-height: 90vh;
    border: none;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.7);
}
.close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 50px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}
.close:hover {
    color: var(--color-accent);
}
.modal-nav {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    pointer-events: none; /* Let clicks pass through to background */
}
.modal-nav button {
    background: rgba(0,0,0,0.5);
    border: none;
    color: white;
    font-size: 40px;
    cursor: pointer;
    user-select: none;
    pointer-events: auto; /* Re-enable clicks */
    padding: 10px 20px;
    transition: background 0.3s;
}
.modal-nav button:hover {
    background: var(--color-accent);
}

form {
    max-width: 700px;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-lg) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-soft);
}
form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-secondary);
}
form input, form textarea, form button {
    width: 100%;
    padding: 1rem;
    margin-bottom: var(--spacing-sm);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    margin-left: 0;
    font-family: inherit;
    background: #f8f9fa;
    border: 1px solid #eee;
    transition: all 0.3s;
}
form input:focus, form textarea:focus {
    outline: none;
    background: #fff;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.15);
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}
form button {
    background: var(--color-primary);
    color: white;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.3s ease;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
}
form button:hover {
    background: var(--color-accent);
}
/* Lazy loading for images */
img {
    max-width: 100%; /* Ensure responsiveness */
}
canvas {
  display: block;
}

/* ---- particles.js container ---- */
#particles-container {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0; /* Behind content */
  pointer-events: auto; /* Enable interaction */
}

@media (max-width: 768px) {
    #particles-container,
    #particles-container canvas {
        pointer-events: none !important;
    }
}

/* Floating WhatsApp Button */
.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;
    transition: transform 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: #fff;
}

/* Diferenciais Section */
.diferenciais {
    background-color: var(--color-light-bg);
    text-align: center;
}

.diferenciais-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.diferencial-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-white);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.05);
    flex: 1 1 300px;
    max-width: 500px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}
.diferencial-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.diferencial-item .icon-box {
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.diferencial-item p {
    margin: 0;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 1.05rem;
}

/* Soluções Section */
.solucoes {
    background-color: var(--color-white);
}

.solucoes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
}

.solucao-card {
    background: var(--color-light-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-secondary);
    transition: all 0.3s ease;
}

.solucao-card:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-accent);
}

.solucao-icon {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.solucao-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.solucao-card p {
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: 0;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }
    header p {
        font-size: 1rem;
        padding: 0 1rem;
    }
    header nav {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    header nav a {
        display: block;
        padding: 0.5rem;
        background: rgba(255,255,255,0.1);
        border-radius: var(--radius-md);
        margin: 0 1rem;
    }
    header nav a:hover {
        background: rgba(255,255,255,0.2);
    }
    
    .hero {
        height: 350px;
    }
    .hero h2 {
        font-size: 2rem;
        padding: 0 1rem;
    }
    
    section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .modal-content {
        max-width: 95%;
    }
    
    .service-item ul li {
        padding-left: 1.5rem; /* Less padding on mobile */
    }

    .diferencial-item {
        padding: 1rem;
        flex-basis: 100%; /* Full width on mobile */
    }
    
    footer .footer-contact {
        text-align: center;
    }

    .whatsapp-float {
        bottom: 15px;
        right: 15px;
        width: 50px;
        height: 50px;
    }

    .header-contact {
        margin-bottom: 0.5rem;
    }
}

/* Form Success Message */
#form-success {
    max-width: 700px;
    margin: var(--spacing-md) auto;
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-soft);
}
#form-success h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}
#form-success p {
    color: var(--color-secondary);
    font-size: 1.1rem;
}