/* 
   Christian Pedroso Engenharia
   Premium Style System
*/

:root {
    /* Color Palette */
    --color-primary: #D35400; /* Vibrant Orange */
    --color-primary-hover: #e65c00;
    --color-dark: #080f1a; /* Very Dark Navy/Black */
    --color-darker: #04080e;
    --color-light: #f5f7fa;
    --color-white: #ffffff;
    --color-text-body: #94a3b8;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    
    /* Layout */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Effects */
    --transition-fast: 0.2s ease-in-out;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 20px rgba(211, 84, 0, 0.4);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-light);
    color: var(--color-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-dark);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-align: center;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Header */
.site-header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-subtle);
    padding: var(--spacing-sm) 0;
}

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

.logo a {
    display: flex;
    align-items: center;
}

.site-logo {
    max-height: 55px;
    width: auto;
    object-fit: contain;
}

.footer-logo-img {
    max-height: 45px;
}

.nav-list {
    display: flex;
    gap: var(--spacing-md);
}

.nav-list a {
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-smooth);
}

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    font-size: 2rem;
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-nav {
        display: none;
        flex-basis: 100%;
        margin-top: var(--spacing-sm);
        background-color: var(--color-white);
        padding: var(--spacing-md) 0;
        text-align: center;
        border-top: 1px solid #eee;
    }
    
    .main-nav.active {
        display: flex;
        flex-direction: column;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-action {
        display: none; /* Hide standard CTA button on small screens */
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--color-darker);
    background-image: linear-gradient(to right, rgba(4, 8, 14, 0.95) 0%, rgba(4, 8, 14, 0.4) 100%), url('img/hero.png');
    background-size: cover;
    background-position: center;
    color: var(--color-white);
    padding-top: 80px; /* Offset for fixed header */
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-body);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

/* Slices (Sections) */
.slice {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-col h3 {
    color: var(--color-white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.footer-col p {
    color: var(--color-text-body);
    margin-bottom: 0.5rem;
}

.social-links a {
    display: inline-block;
    margin-right: 1rem;
    color: var(--color-primary);
    font-weight: bold;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: var(--shadow-subtle);
    transition: all var(--transition-smooth);
    border-top: 4px solid var(--color-primary);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

.service-icon {
    font-size: 2.8rem;
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.4rem;
}

.service-card p {
    color: var(--color-text-body);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    flex-grow: 1; /* Pushes the link to bottom */
}

.card-link {
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    display: inline-block;
    margin-top: auto;
}

.card-link:hover {
    color: var(--color-primary-hover);
}

/* Internal Pages Header */
.page-header {
    background-color: var(--color-darker);
    padding: 140px 0 80px 0;
    color: var(--color-white);
    text-align: center;
    background-image: radial-gradient(circle at center, #111e33, #04080e);
}

.page-header h1 {
    color: var(--color-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    color: var(--color-text-body);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Layout Utilities */
.two-col-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (max-width: 768px) {
    .two-col-layout {
        grid-template-columns: 1fr;
    }
    .hero h1 { font-size: 2.5rem; }
}

.text-content p {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: #475569;
}

.text-content h2 {
    margin-bottom: var(--spacing-md);
}

.values-list {
    margin-top: var(--spacing-md);
}

.values-list li {
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    padding: var(--spacing-sm);
    background-color: #f8fafc;
    border-left: 4px solid var(--color-primary);
    border-radius: 4px;
}

.premium-image-box {
    width: 100%;
    height: 450px;
    background-color: var(--color-dark);
    border-radius: 12px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e2e8f0;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}