/* ==========================================
   PAVTERRA TERRAPLENAGEM — Main Stylesheet
   Palette: Dark #1a1a1a / #2a2a2a, Gray #555555 / #aaaaaa, White #ffffff
   ========================================== */

/* ---------- CSS Variables ---------- */
:root {
    --dark-bg: #0f0f0f;
    --dark-primary: #1a1a1a;
    --dark-secondary: #2a2a2a;
    --dark-tertiary: #3a3a3a;
    --gray-light: #aaaaaa;
    --gray-medium: #555555;
    --gray-dark: #333333;
    --accent: #d4af37;
    --accent-light: #e8c547;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.5);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.6);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; width: 100%; }
body {
    font-family: var(--font-body);
    color: var(--gray-light);
    line-height: 1.7;
    background: var(--dark-primary);
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.25; color: var(--white); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Preloader ---------- */
#preloader {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 99999;
    background: var(--dark-primary);
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.5s, visibility 0.5s;
    width: 100%;
    height: 100%;
    overflow: hidden;
}
#preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader-inner { text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.preloader-logo { width: 180px; height: auto; margin: 0 auto 24px; border-radius: var(--radius-md); opacity: 0.3; animation: preloaderLogoAnim 1.5s ease-in-out forwards; }
.preloader-bar { width: 200px; height: 4px; background: var(--dark-tertiary); border-radius: 4px; overflow: hidden; margin: 0 auto; }
.preloader-progress { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), var(--accent-light)); border-radius: 4px; animation: preloaderAnim 1.5s ease-in-out forwards; }
@keyframes preloaderAnim { to { width: 100%; } }
@keyframes preloaderLogoAnim { to { opacity: 1; } }

/* ---------- Navbar ---------- */
#header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: transparent;
    transition: var(--transition);
}
#header.scrolled {
    background: rgba(26,26,26,0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}
.navbar { padding: 0; }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 80px; }
#header.scrolled .nav-container { height: 70px; }
.nav-logo img { height: 55px; border-radius: var(--radius-sm); transition: var(--transition); }
#header.scrolled .nav-logo img { height: 45px; }
.nav-menu { display: flex; align-items: center; }
.nav-list { display: flex; gap: 8px; }
.nav-link {
    font-family: var(--font-heading);
    font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
    padding: 8px 14px; border-radius: var(--radius-sm);
    color: var(--white);
    transition: var(--transition);
}
#header.scrolled .nav-link { color: var(--gray-light); }
.nav-link:hover, .nav-link.active { color: var(--accent); background: rgba(212,175,55,0.1); }
#header:not(.scrolled) .nav-link:hover, #header:not(.scrolled) .nav-link.active { color: var(--accent-light); background: rgba(212,175,55,0.15); }
.nav-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: #25D366; color: var(--white);
    font-family: var(--font-heading); font-size: 0.85rem; font-weight: 700;
    padding: 10px 22px; border-radius: 50px;
    transition: var(--transition);
}
.nav-cta:hover { background: #1EBE5A; transform: translateY(-2px); box-shadow: 0 4px 15px rgba(37,211,102,0.4); }
.nav-toggle {
    display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px;
}
.nav-toggle span { display: block; width: 26px; height: 3px; background: var(--white); border-radius: 3px; transition: var(--transition); }
#header.scrolled .nav-toggle span { background: var(--gray-light); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ---------- Hero Slider ---------- */
.hero-section { position: relative; height: 100vh; min-height: 650px; overflow: hidden; }
.hero-slider { position: relative; height: 100%; }
.hero-slide {
    position: absolute; inset: 0;
    background-size: cover; background-position: center; background-repeat: no-repeat;
    opacity: 0; visibility: hidden;
    transition: opacity 1s ease, visibility 1s ease;
}
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,15,15,0.85) 0%, rgba(26,26,26,0.75) 50%, rgba(0,0,0,0.6) 100%);
}
.hero-content {
    position: relative; z-index: 2;
    display: flex; flex-direction: column; justify-content: center;
    height: 100%; padding-top: 80px; padding-bottom: 120px;
    max-width: 800px;
}
.hero-badge {
    display: inline-block; width: fit-content;
    background: rgba(212,175,55,0.15); border: 1px solid rgba(212,175,55,0.3);
    color: var(--accent-light); font-family: var(--font-heading);
    font-size: 0.8rem; font-weight: 700; letter-spacing: 3px; text-transform: uppercase;
    padding: 8px 20px; border-radius: 50px; margin-bottom: 20px;
}
.hero-title {
    font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800;
    color: var(--white); margin-bottom: 16px; line-height: 1.15;
}
.hero-text {
    font-size: clamp(0.95rem, 1.6vw, 1.05rem); color: rgba(255,255,255,0.85);
    max-width: 620px; margin-bottom: 24px; line-height: 1.7;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--font-heading); font-size: 0.95rem; font-weight: 700;
    padding: 14px 32px; border-radius: 50px; border: 2px solid transparent;
    cursor: pointer; transition: var(--transition); text-transform: uppercase; letter-spacing: 0.5px;
}
.btn-primary { background: var(--accent); color: var(--dark-primary); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-3px); box-shadow: 0 8px 25px rgba(212,175,55,0.35); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-outline:hover { background: var(--white); color: var(--dark-primary); border-color: var(--white); transform: translateY(-3px); }
.btn-outline-white { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline-white:hover { background: var(--white); color: var(--dark-primary); transform: translateY(-3px); }
.btn-whatsapp { background: #25D366; color: var(--white); border-color: #25D366; }
.btn-whatsapp:hover { background: #1EBE5A; border-color: #1EBE5A; transform: translateY(-3px); box-shadow: 0 8px 25px rgba(37,211,102,0.35); }
.btn-full { width: 100%; justify-content: center; }

/* Hero controls */
.hero-controls {
    position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
    z-index: 10; display: flex; align-items: center; gap: 20px;
}
.hero-prev, .hero-next {
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(255,255,255,0.1); backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--white); font-size: 1rem;
    cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; justify-content: center;
}
.hero-prev:hover, .hero-next:hover { background: var(--accent); border-color: var(--accent); color: var(--dark-primary); }
.hero-dots { display: flex; gap: 10px; }
.hero-dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: rgba(255,255,255,0.2); border: 2px solid rgba(255,255,255,0.3);
    cursor: pointer; transition: var(--transition);
}
.hero-dot.active { background: var(--accent); border-color: var(--accent); width: 36px; border-radius: 6px; }
.hero-scroll-down {
    position: absolute; bottom: 8px; left: 50%; transform: translateX(-50%);
    z-index: 10; color: rgba(255,255,255,0.6); text-align: center;
    font-size: 0.7rem; font-family: var(--font-heading); text-transform: uppercase; letter-spacing: 2px;
    animation: scrollBounce 2s infinite;
}
.hero-scroll-down span { display: block; margin-bottom: 4px; }
@keyframes scrollBounce { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(6px); } }

/* Hero animations */
.animate-fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.hero-slide.active .animate-fade-up { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section-about { background: var(--dark-secondary); }
.section-mvv { background: var(--dark-primary); }
.section-services { background: var(--dark-secondary); }
.section-portfolio { background: var(--dark-primary); }
.section-highlights { background: var(--dark-secondary); }
.section-contact { background: var(--dark-primary); }

.section-header { text-align: center; max-width: 800px; margin: 0 auto 60px; }
.section-tag {
    display: inline-block;
    font-family: var(--font-heading); font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 3px;
    color: var(--accent); margin-bottom: 12px;
}
.section-tag.light { color: var(--accent-light); }
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 800; margin-bottom: 16px; }
.section-title.light { color: var(--white); }
.text-accent { color: var(--accent); }
.text-accent-light { color: var(--accent-light); }
.section-divider { width: 60px; height: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); margin: 0 auto 20px; border-radius: 4px; }
.section-divider.light { background: linear-gradient(90deg, var(--accent-light), var(--accent)); }
.section-subtitle { font-size: 1.05rem; color: var(--gray-light); line-height: 1.8; }

/* ---------- About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-content h3 {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--white);
}
.about-content p {
    margin-bottom: 16px;
    color: var(--gray-light);
    line-height: 1.8;
}
.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
    width: 100%;
    border: 2px solid var(--accent);
    transition: var(--transition);
}
.about-image img:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.5);
}

/* ---------- MVV Cards ---------- */
.mvv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}
.mvv-card {
    background: var(--dark-secondary);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--dark-tertiary);
    transition: var(--transition);
}
.mvv-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(212,175,55,0.1);
    transform: translateY(-5px);
}
.mvv-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
}
.mvv-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--white);
}
.mvv-card p {
    color: var(--gray-light);
    line-height: 1.8;
}

/* ---------- Services ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.service-card {
    background: var(--dark-tertiary);
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--dark-tertiary);
    transition: var(--transition);
}
.service-card:hover {
    background: var(--dark-secondary);
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(212,175,55,0.15);
    transform: translateY(-8px);
}
.service-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
}
.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--white);
}
.service-card p {
    color: var(--gray-light);
    line-height: 1.7;
}

/* ---------- Portfolio ---------- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}
.portfolio-more {
    text-align: center;
}
.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 1;
    cursor: pointer;
}
.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: var(--transition);
}
.portfolio-item:hover img { transform: scale(1.1); }
.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-overlay h3 {
    color: var(--accent);
    font-size: 1.5rem;
}

/* ---------- Highlights ---------- */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.highlight-card {
    background: var(--dark-secondary);
    padding: 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--dark-tertiary);
    transition: var(--transition);
}
.highlight-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(212,175,55,0.1);
    transform: translateY(-5px);
}
.highlight-icon {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 16px;
}
.highlight-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--white);
}
.highlight-card p {
    color: var(--gray-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ---------- Contact ---------- */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.info-card {
    background: var(--dark-secondary);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--dark-tertiary);
    display: flex;
    gap: 20px;
    transition: var(--transition);
}
.info-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.2);
    transform: translateY(-5px);
}
.info-icon {
    font-size: 2.2rem;
    color: var(--accent);
    flex-shrink: 0;
}
.info-text h4 {
    color: var(--white);
    margin-bottom: 8px;
    font-size: 1.1rem;
}
.info-text p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.6;
}
.info-text a {
    color: var(--accent);
    transition: var(--transition);
}
.info-text a:hover {
    color: var(--accent-light);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-tertiary);
    border-radius: var(--radius-md);
    color: var(--white);
    font-family: var(--font-body);
    transition: var(--transition);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-medium);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(212,175,55,0.1);
}
.form-group select {
    cursor: pointer;
}
.form-group select option {
    background: var(--dark-secondary);
    color: var(--white);
}

/* ---------- Footer ---------- */
.footer {
    background: var(--dark-bg);
    padding: 60px 0 20px;
    border-top: 1px solid var(--dark-tertiary);
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}
.footer-section h4 {
    color: var(--white);
    margin-bottom: 16px;
    font-size: 1.1rem;
}
.footer-section p {
    color: var(--gray-light);
    margin-bottom: 12px;
    line-height: 1.8;
}
.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.footer-section a {
    color: var(--gray-light);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.footer-section a:hover {
    color: var(--accent);
}
.footer-logo {
    margin-bottom: 16px;
}
.footer-logo img {
    height: 60px;
    border-radius: var(--radius-md);
}
.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}
.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-tertiary);
    border-radius: 50%;
    color: var(--accent);
    font-size: 1.1rem;
    transition: var(--transition);
}
.footer-social a:hover {
    background: var(--accent);
    color: var(--dark-primary);
    border-color: var(--accent);
}
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--dark-tertiary);
    color: var(--gray-medium);
}

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: var(--dark-primary);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
}

/* ---------- Animations ---------- */
[data-animate="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
}
[data-animate="fade-up"].animated {
    animation: fadeUp 0.8s ease forwards;
}
[data-animate="fade-right"] {
    opacity: 0;
    transform: translateX(-30px);
}
[data-animate="fade-right"].animated {
    animation: fadeRight 0.8s ease forwards;
}
[data-animate="fade-left"] {
    opacity: 0;
    transform: translateX(30px);
}
[data-animate="fade-left"].animated {
    animation: fadeLeft 0.8s ease forwards;
}
@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeRight {
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeLeft {
    to { opacity: 1; transform: translateX(0); }
}

/* ---------- Responsive ---------- */
/* Garantir sem scroll horizontal em todos os dispositivos */
@media (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
}

@media (max-width: 768px) {
    .about-grid,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--dark-secondary);
        flex-direction: column;
        padding: 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-menu.open {
        max-height: 500px;
    }
    
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-overlay.open {
        opacity: 1;
        visibility: visible;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .hero-controls {
        bottom: 20px;
        gap: 10px;
    }
    
    .hero-prev, .hero-next {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        max-width: 100%;
        padding: 0 12px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .services-grid,
    .portfolio-grid,
    .highlights-grid,
    .mvv-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    img {
        max-width: 100%;
        width: 100%;
    }
}