/* Modern CSS Variables & Resets */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-glow: rgba(245, 158, 11, 0.15);
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    
    --card-border: rgba(255, 255, 255, 0.05);
    --card-glass: rgba(30, 41, 59, 0.7);
    
    --font-sans: 'Outfit', sans-serif;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography Utility */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

span.accent-text, h1 span, h2 span {
    color: var(--accent);
    background: linear-gradient(135deg, var(--accent) 0%, #f59e0b 50%, #f97316 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header & Navigation */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    transition: var(--transition-fast);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon-bg {
    width: 44px;
    height: 44px;
    background: var(--accent-glow);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon {
    color: var(--accent);
    width: 22px;
    height: 22px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    line-height: 1.1;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-muted);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-primary);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-whatsapp {
    background-color: #25d366;
    color: #fff;
}

.btn-whatsapp:hover {
    background-color: #20ba5a;
    box-shadow: 0 0 15px rgba(37, 211, 102, 0.3);
}

.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--card-border);
    padding: 1.5rem;
    z-index: 99;
}

.mobile-nav a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.75rem 0;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav.open {
    display: flex;
    flex-direction: column;
}

/* Glassmorphism Cards */
.card-glass {
    background: var(--card-glass);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--border-radius-md);
}

/* Sections Global */
section {
    padding: 8rem 0 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 10rem 0 8rem 0;
    background-image: radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-glow);
    border: 1px solid rgba(245, 158, 11, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.badge-icon {
    width: 16px;
    height: 16px;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 550px;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hero Graphic / Parts Grid */
.hero-graphic {
    display: flex;
    justify-content: center;
}

.hero-card {
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.hero-card::before {
    content: '';
    position: absolute;
    top: -10px;
    right: -10px;
    width: 100px;
    height: 100px;
    border-right: 2px solid var(--accent);
    border-top: 2px solid var(--accent);
    opacity: 0.3;
}

.parts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.part-mini-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    padding: 1.5rem 1rem;
    text-align: center;
    transition: var(--transition-normal);
}

.part-mini-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(245, 158, 11, 0.2);
}

.part-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 0.75rem;
}

.part-icon.accent { color: var(--accent); }
.part-icon.success { color: var(--success); }
.part-icon.warning { color: #f97316; }
.part-icon.info { color: #3b82f6; }

.part-mini-card h4 {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Categories Section */
.categories-section {
    background-color: var(--bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: var(--bg-primary);
    border: 1px solid var(--card-border);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.category-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
    border-color: rgba(245, 158, 11, 0.2);
}

.category-card:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.cat-icon-container {
    width: 60px;
    height: 60px;
    background: var(--accent-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.cat-icon-container i {
    width: 28px;
    height: 28px;
}

.category-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.cat-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: var(--transition-fast);
}

.category-card:hover .cat-link i {
    transform: translateX(4px);
}

/* Compatibility Checker Section */
.search-control-panel {
    padding: 2.5rem;
    margin-bottom: 3rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.search-inputs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1.5fr;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-icon {
    width: 14px;
    height: 14px;
    color: var(--accent);
}

select, input {
    background-color: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    outline: none;
}

select:focus, input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}

.results-header {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1rem;
}

.results-header h3 {
    font-size: 1.1rem;
    font-weight: 500;
}

/* Products Catalog Grid */
.products-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-4px);
    border-color: rgba(245, 158, 11, 0.15);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.prod-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.prod-badge.Engine { background: rgba(245, 158, 11, 0.1); color: var(--accent); }
.prod-badge.Brakes { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.prod-badge.Electricals { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.prod-badge.Accessories { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }

.product-card h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.prod-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.compatibility-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}

.compat-tag {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.prod-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1rem;
}

.price-box {
    display: flex;
    flex-direction: column;
}

.price-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.price-val {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.btn-inquire-sm {
    padding: 0.5rem 0.85rem;
    font-size: 0.8rem;
    background-color: var(--accent-glow);
    color: var(--accent);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: var(--transition-fast);
}

.btn-inquire-sm:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.no-results i {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact-section {
    background-color: var(--bg-secondary);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.contact-subtitle {
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-detail-item {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.icon-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-glow);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-circle i {
    width: 20px;
    height: 20px;
}

.contact-detail-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-detail-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Contact Form Card */
.contact-form-card {
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.contact-form-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.contact-form-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

textarea {
    background-color: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: 0.85rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    resize: none;
    outline: none;
    transition: var(--transition-fast);
}

textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.15);
}

/* Footer styling */
.app-footer {
    background-color: var(--bg-primary);
    padding: 3rem 0;
    border-top: 1px solid var(--card-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-credit {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.75rem;
    }
    
    .hero-desc {
        margin: 0 auto 2.5rem auto;
    }
    
    .hero-cta-group {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-graphic {
        order: -1;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .search-inputs-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .search-bar-wrapper {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-links, .app-header .btn-whatsapp {
        display: none;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .header-container {
        height: 70px;
    }
    
    .mobile-nav {
        top: 70px;
    }
    
    section {
        padding: 5rem 0 3rem 0;
    }
    
    .hero-section {
        padding-top: 7rem;
    }
    
    .search-inputs-grid {
        grid-template-columns: 1fr;
    }
    
    .search-bar-wrapper {
        grid-column: span 1;
    }
    
    .contact-form-card {
        padding: 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}