/* ========================================
   BK MOTORS - Main Stylesheet
   www.bkmotors.com.br
======================================== */

/* CSS Variables */
:root {
    /* Brand Colors */
    --primary-dark: #0a1628;
    --primary-medium: #1a2d4a;
    --primary-light: #2a4a6a;
    --accent-blue: #2196F3;
    --accent-gold: #d4af37;
    --text-white: #ffffff;
    --text-light: #b0c4de;
    --text-gray: #8899aa;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #0a1628 100%);
    --gradient-card: linear-gradient(145deg, rgba(26, 45, 74, 0.8) 0%, rgba(10, 22, 40, 0.9) 100%);
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f0d78c 50%, #d4af37 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(33, 150, 243, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-size-base: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

/* ========================================
   UTILITIES
======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: -2rem auto var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-gold);
    color: var(--primary-dark);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
}

.btn-secondary:hover {
    background: var(--accent-blue);
    color: var(--text-white);
    transform: translateY(-3px);
}

/* ========================================
   HEADER / NAVIGATION
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-gold);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary-dark);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateX(-100%);
        transition: var(--transition-normal);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 1rem;
    }
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--gradient-primary);
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.jpg') center/cover no-repeat;
    opacity: 0.3;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, var(--primary-dark) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-md);
}

.hero-badge {
    display: inline-block;
    background: rgba(33, 150, 243, 0.2);
    border: 1px solid var(--accent-blue);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-title span {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: bounce 2s infinite;
}

.hero-scroll svg {
    width: 30px;
    height: 30px;
    fill: var(--text-light);
}

/* ========================================
   SERVICES SECTION
======================================== */
.services {
    background: var(--primary-medium);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, var(--primary-dark) 0%, transparent 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(33, 150, 243, 0.15);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
}

.service-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-gold);
}

.service-description {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ========================================
   BENEFITS SECTION
======================================== */
.benefits {
    background: var(--primary-dark);
}

.benefit-highlight {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    border: 1px solid rgba(212, 175, 55, 0.3);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.benefit-highlight::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
    animation: pulse 4s infinite;
}

.benefit-number {
    font-size: 5rem;
    font-weight: 800;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.benefit-text {
    font-size: 1.5rem;
    color: var(--text-white);
}

.benefit-subtext {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: var(--spacing-sm);
}

/* ========================================
   ABOUT SECTION
======================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 3px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: var(--transition-slow);
}

.about-image:hover img {
    transform: scale(1.05);
}

.about-text h2 {
    font-size: 2.2rem;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

.about-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.about-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(33, 150, 243, 0.1);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.about-list li::before {
    content: '✓';
    color: var(--accent-gold);
    font-weight: bold;
}

/* ========================================
   MODELS SECTION
======================================== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.model-card {
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(33, 150, 243, 0.3);
}

.model-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.model-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.model-card:hover .model-image img {
    transform: scale(1.1);
}

.model-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--gradient-gold);
    color: var(--primary-dark);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
}

.model-info {
    padding: var(--spacing-md);
}

.model-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.model-category {
    color: var(--accent-blue);
    font-size: 0.9rem;
}

/* ========================================
   ESG SECTION
======================================== */
.esg-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.esg-intro p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.esg-pillars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.esg-pillar {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: start;
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.esg-pillar:nth-child(even) {
    grid-template-columns: 1.5fr 1fr;
}

.esg-pillar:nth-child(even) .esg-pillar-image {
    order: 2;
}

@media (max-width: 768px) {
    .esg-pillar,
    .esg-pillar:nth-child(even) {
        grid-template-columns: 1fr;
    }
    
    .esg-pillar:nth-child(even) .esg-pillar-image {
        order: 0;
    }
}

.esg-pillar-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    height: 300px;
}

.esg-pillar-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.esg-pillar-content h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.esg-pillar-content h3 span.letter {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    font-weight: 800;
    font-size: 1.5rem;
}

.esg-pillar.environmental h3 span.letter {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
}

.esg-pillar.social h3 span.letter {
    background: linear-gradient(135deg, #2196F3, #03A9F4);
    color: white;
}

.esg-pillar.governance h3 span.letter {
    background: linear-gradient(135deg, #9C27B0, #673AB7);
    color: white;
}

.esg-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.esg-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

.esg-list li::before {
    content: '•';
    color: var(--accent-gold);
    font-size: 1.5rem;
    line-height: 1;
    flex-shrink: 0;
}

/* ========================================
   CONTACT SECTION
======================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--accent-gold);
}

.contact-info p {
    color: var(--text-light);
    font-size: 1.05rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
}

.contact-item svg {
    width: 24px;
    height: 24px;
    fill: var(--accent-blue);
    flex-shrink: 0;
}

.contact-item a:hover {
    color: var(--accent-blue);
}

.contact-form {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-light);
}

.form-group label .required {
    color: #ef5350;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-white);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.2);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-gray);
}

.form-submit {
    width: 100%;
    background: var(--gradient-gold);
    color: var(--primary-dark);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.form-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
}

/* Map Container */
.map-container {
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 300px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: var(--primary-medium);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
    color: var(--text-light);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.footer-section a:hover {
    color: var(--accent-blue);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
}

.footer-logo span {
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.social-links a:hover {
    background: var(--accent-blue);
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: var(--text-white);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* ========================================
   ANIMATIONS
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   PAGE HEADERS (for inner pages)
======================================== */
.page-header {
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--gradient-primary);
    padding-top: 100px;
    position: relative;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, var(--primary-dark) 100%);
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

.page-header p {
    color: var(--text-light);
    font-size: 1.2rem;
    margin-top: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
======================================== */
@media (max-width: 480px) {
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .benefit-number {
        font-size: 3.5rem;
    }
    
    .benefit-text {
        font-size: 1.2rem;
    }
}