/* ===== Variables & Reset ===== */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lighter: #f1f5f9;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    max-width: 100%;
    padding: 0 20px;
}

/* ===== Header Premium ===== */
.header-premium {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

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

.logo-premium {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--dark);
}

.logo-icon {
    font-size: 2rem;
}

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

.nav-link {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

/* ===== Hero Section ===== */
.hero-premium {
    padding: 4rem 0 3rem;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Main Search ===== */
.main-search {
    padding: 2rem 0 4rem;
}

.quick-search-container {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Tabs ===== */
.search-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--gray-lighter);
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-icon {
    font-size: 1.25rem;
}

/* ===== Search Modes ===== */
.search-mode {
    display: none;
}

.search-mode.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== Quick Search ===== */
.quick-search-box {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    font-size: 1.5rem;
    color: var(--gray);
}

.search-input-premium {
    width: 100%;
    padding: 1.25rem 3.5rem 1.25rem 4rem;
    font-size: 1.125rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    transition: var(--transition);
    font-family: inherit;
}

.search-input-premium:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.btn-clear {
    position: absolute;
    right: 1rem;
    background: var(--gray-light);
    border: none;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.btn-clear:hover {
    background: var(--gray);
    color: white;
}

.btn-search-premium {
    padding: 1.25rem 3rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-search-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-search-premium:active {
    transform: translateY(0);
}

/* ===== Suggestions ===== */
.search-suggestions {
    background: white;
    border: 1px solid var(--gray-lighter);
    border-radius: var(--radius);
    margin-top: -0.5rem;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

.search-suggestions.show {
    display: block;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.suggestion-item {
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--gray-lighter);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--gray-lighter);
}

/* ===== Popular Searches ===== */
.popular-searches {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.popular-label {
    color: var(--gray);
    font-size: 0.875rem;
    font-weight: 500;
}

.chip-search {
    padding: 0.5rem 1rem;
    background: var(--gray-lighter);
    border: none;
    border-radius: 50px;
    color: var(--dark);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.chip-search:hover {
    background: var(--primary);
    color: white;
}

/* ===== Wizard Steps ===== */
.guided-search-wizard {
    min-height: 400px;
}

.wizard-step {
    display: none;
}

.wizard-step.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-back {
    background: var(--gray-lighter);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-back:hover {
    background: var(--gray-light);
}

.step-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    flex: 1;
}

/* ===== Vehicle Cards ===== */
.vehicle-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.vehicle-card {
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    padding: 2rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.vehicle-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.vehicle-icon {
    font-size: 3rem;
    margin-bottom: 0.75rem;
}

.vehicle-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.vehicle-desc {
    font-size: 0.875rem;
    color: var(--gray);
}

/* ===== Filter Box ===== */
.search-filter-box {
    margin-bottom: 2rem;
}

.filter-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.filter-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

/* ===== Brands Grid ===== */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
}

.brand-btn {
    padding: 1.5rem 1rem;
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.brand-btn:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* ===== Models Grid ===== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.model-btn {
    padding: 1.25rem 1rem;
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.model-btn:hover {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    transform: translateY(-2px);
}

/* ===== Year Selector ===== */
.year-selector {
    max-width: 800px;
    margin: 0 auto;
}

.year-ranges {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.year-range-btn {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.year-range-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.year-or {
    text-align: center;
    color: var(--gray);
    font-weight: 500;
    margin: 2rem 0 1.5rem;
}

.years-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
}

.year-btn {
    padding: 1rem;
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ===== Parts Categories ===== */
.parts-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.part-btn {
    padding: 1.25rem;
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.part-btn:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    transform: translateX(4px);
}

.part-name {
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.part-category {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ===== Systems Grid ===== */
.systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.system-card {
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    padding: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.system-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.system-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.system-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.system-parts {
    font-size: 0.875rem;
    color: var(--gray);
}

/* ===== Search Breadcrumb ===== */
.search-breadcrumb {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 0.875rem;
    display: none;
}

.search-breadcrumb.show {
    display: block;
}

.breadcrumb-item {
    display: inline-block;
    margin-right: 0.5rem;
    color: var(--gray);
}

.breadcrumb-item strong {
    color: var(--dark);
}

/* ===== Results ===== */
.results-container {
    margin-top: 3rem;
    animation: fadeInUp 0.5s ease;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: white;
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.results-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.results-count {
    color: var(--gray);
    font-size: 1rem;
}

.results-controls {
    display: flex;
    gap: 1rem;
}

.sort-select {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.sort-select:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-new-search {
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-new-search:hover {
    background: var(--primary-dark);
}

/* ===== Results Grid ===== */
.results-grid {
    display: grid;
    gap: 1.5rem;
}

.result-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: auto 1fr auto;
    animation: fadeInUp 0.5s ease;
}

.result-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.result-card.out-of-stock {
    opacity: 0.7;
}

/* Imagen del Resultado */
.result-image-container {
    grid-row: 1 / -1;
    position: relative;
    overflow: hidden;
    background: var(--gray-lighter);
}

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

.result-card:hover .result-image {
    transform: scale(1.05);
}

.result-image.error-image {
    opacity: 0.5;
}

.brand-overlay {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: rgba(255, 255, 255, 0.95);
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--dark);
    box-shadow: var(--shadow-sm);
}

/* Información del Resultado */
.result-info {
    padding: 1.5rem;
    grid-column: 2;
    grid-row: 1 / 2;
}

.result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.result-name {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
    flex: 1;
}

/* Badges de Condición */
.condition-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

.badge-secondary {
    background: var(--gray-lighter);
    color: var(--gray);
}

/* Badge de Compatibilidad */
.compatibility-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    color: #5b21b6;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Información del Vendedor */
.result-seller {
    padding: 1rem;
    background: var(--gray-lighter);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.seller-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.seller-icon {
    font-size: 1.75rem;
}

/* Logo del repuestero (SOLO PREMIUM) */
.seller-logo-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.seller-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: 8px;
    border: 2px solid var(--gray-lighter);
    background: white;
    padding: 4px;
    transition: var(--transition);
}

.seller-logo:hover {
    transform: scale(1.05);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.badge-premium {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #854d0e;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.85;
        transform: scale(1.02);
    }
}

.seller-details {
    flex: 1;
}

.seller-name {
    font-weight: 700;
    color: var(--dark);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.seller-location {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Descripción */
.result-description {
    color: var(--gray);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* Meta información */
.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    color: var(--gray);
    padding: 0.375rem 0.75rem;
    background: white;
    border: 1px solid var(--gray-lighter);
    border-radius: 6px;
}

/* Footer del Resultado (Precio y Contacto) */
.result-footer {
    grid-column: 2;
    grid-row: 3;
    padding: 0 1.5rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.result-price-section {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.result-price {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.result-stock {
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.stock-available {
    background: #d1fae5;
    color: #065f46;
}

.stock-unavailable {
    background: #fee2e2;
    color: #991b1b;
}

.btn-contact {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-contact:hover:not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-contact.disabled {
    background: var(--gray-light);
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.6;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray);
}

.result-price-section {
    text-align: right;
}

.result-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.result-stock {
    color: var(--success);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.btn-contact {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== No Results ===== */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.no-results-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.no-results h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.no-results p {
    color: var(--gray);
    margin-bottom: 2rem;
}

.btn-primary {
    padding: 1rem 2rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.125rem;
    font-weight: 600;
}

/* ===== Search All Button ===== */
.search-all-container {
    text-align: center;
    margin-top: 2rem;
}

.btn-search-all {
    padding: 1.25rem 3rem;
    background: linear-gradient(135deg, var(--secondary) 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-search-all:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .quick-search-box {
        flex-direction: column;
    }
    
    .btn-search-premium {
        width: 100%;
    }
    
    .search-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        white-space: nowrap;
    }
    
    .vehicle-types-grid,
    .systems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .results-controls {
        width: 100%;
        flex-direction: column;
    }
    
    .sort-select,
    .btn-new-search {
        width: 100%;
    }
    
    .result-card {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }
    
    .result-image-container {
        grid-row: 1;
        grid-column: 1;
        height: 250px;
    }
    
    .result-info {
        grid-column: 1;
        grid-row: 2;
    }
    
    .result-footer {
        grid-column: 1;
        grid-row: 3;
        flex-direction: column;
        align-items: stretch;
    }
    
    .result-price-section {
        justify-content: space-between;
        width: 100%;
    }
    
    .btn-contact {
        width: 100%;
    }
}
/* ===== NUEVOS ESTILOS: Selector de Categorías por Sistema ===== */
.categoria-selector {
    animation: fadeInUp 0.5s ease;
}

.categorias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.categoria-btn {
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    padding: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

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

.categoria-nombre {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.categoria-cantidad {
    font-size: 0.875rem;
    color: var(--gray);
}

.buscar-todo-sistema {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px dashed var(--gray-lighter);
    text-align: center;
}

.system-count {
    font-size: 0.75rem;
    color: var(--gray);
    margin-top: 0.5rem;
    font-weight: 500;
}

.step-subtitle {
    color: var(--gray);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

/* Breadcrumb mejorado */
.breadcrumb-item {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--gray-lighter);
    border-radius: var(--radius);
    margin: 0.25rem;
}

.breadcrumb-item strong {
    color: var(--primary);
}

/* ===== NUEVO: VIN Decoder en Búsqueda Guiada ===== */
.vin-input-section {
    margin: 2rem 0;
}

.vin-input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.vin-input-guided {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1.125rem;
    font-family: 'Courier New', monospace;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
}

.vin-input-guided:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn-decode-vin {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-decode-vin:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.vin-validation-msg {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.vin-validation-msg.info {
    background: #dbeafe;
    color: #1e40af;
}

.vin-validation-msg.success {
    background: #d1fae5;
    color: #065f46;
}

.vin-validation-msg.error {
    background: #fee2e2;
    color: #991b1b;
}

.vin-help-text {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 0.5rem;
}

.vin-result-container {
    margin-top: 2rem;
    animation: fadeInUp 0.5s ease;
}

.vehicle-decoded-card {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 100%);
    border: 2px solid #c4b5fd;
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.vehicle-decoded-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.success-icon {
    font-size: 2rem;
}

.vehicle-decoded-header h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #5b21b6;
    margin: 0;
}

.vehicle-decoded-info {
    background: white;
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.vehicle-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-lighter);
}

.vehicle-info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--gray);
    font-size: 0.9375rem;
}

.info-value {
    font-weight: 700;
    color: var(--dark);
    font-size: 1rem;
    text-align: right;
}

.btn-use-vehicle {
    width: 100%;
    padding: 1.25rem;
    background: linear-gradient(135deg, #5b21b6 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-use-vehicle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.vin-skip-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px dashed var(--gray-lighter);
    text-align: center;
}

.btn-skip {
    padding: 1rem 2rem;
    background: white;
    color: var(--gray);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-skip:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.vin-search-options,
.vin-sistema-selector,
.vin-pieza-selector {
    animation: fadeInUp 0.5s ease;
}

.vehicle-summary-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.vehicle-summary-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.vehicle-icon {
    font-size: 2.5rem;
}

.vehicle-summary-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 0.25rem 0;
}

.vehicle-vin {
    font-size: 0.875rem;
    opacity: 0.9;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.vehicle-summary-card-mini {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gray-lighter);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.vehicle-icon-mini {
    font-size: 1.25rem;
}

.search-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.search-option-card {
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.search-option-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.option-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.option-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.option-desc {
    font-size: 0.875rem;
    color: var(--gray);
}

.popular-parts-vin {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px dashed var(--gray-lighter);
}

.popular-label {
    display: block;
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 1rem;
}

.chips-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ===== FASE 3: FILTROS AVANZADOS ===== */

.btn-filter-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
}

.btn-filter-toggle:hover,
.btn-filter-toggle.active {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-badge {
    background: var(--danger);
    color: white;
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-weight: 700;
}

.filters-panel {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    animation: fadeInUp 0.3s ease;
}

.filters-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-lighter);
}

.filters-section:last-child {
    margin-bottom: 1rem;
    padding-bottom: 0;
    border-bottom: none;
}

.filter-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
}

.price-range-inputs {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.price-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
}

.price-input:focus {
    outline: none;
    border-color: var(--primary);
}

.price-range-slider {
    margin-top: 1rem;
}

.price-range-slider input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--gray-lighter);
    border-radius: 4px;
    outline: none;
}

.price-range-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

.price-range-slider input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.range-values {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
}

.filter-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.filter-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.filters-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-apply-filters {
    flex: 1;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.btn-apply-filters:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-clear-filters {
    padding: 1rem 2rem;
    background: white;
    color: var(--gray);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-clear-filters:hover {
    border-color: var(--danger);
    color: var(--danger);
}

/* ===== FASE 3: COMPARACIÓN DE PIEZAS ===== */

.result-actions-top {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: flex;
    gap: 0.5rem;
}

.btn-favorite,
.btn-compare {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-favorite:hover,
.btn-compare:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.btn-favorite.favorited {
    background: #fee2e2;
    animation: heartBeat 0.3s ease;
}

.btn-compare.active {
    background: #dbeafe;
    color: var(--primary);
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.comparison-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 3px solid var(--primary);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.15);
    padding: 1.5rem;
    z-index: 1000;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.comparison-header h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
}

.btn-clear-comparison {
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    color: var(--danger);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-clear-comparison:hover {
    text-decoration: underline;
}

.comparison-items {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    overflow-x: auto;
}

.comparison-item {
    position: relative;
    background: var(--gray-lighter);
    border-radius: var(--radius);
    padding: 1rem;
    min-width: 200px;
}

.btn-remove-item {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: var(--danger);
    color: white;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-remove-item:hover {
    transform: scale(1.1);
}

.comparison-item-name {
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
    padding-right: 1.5rem;
}

.comparison-item-price {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

.btn-compare-now {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--secondary) 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-compare-now:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Modal de Comparación */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 1200px;
    width: 100%;
    max-height: 90vh;
    overflow: auto;
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 2px solid var(--gray-lighter);
}

.modal-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
}

.btn-close-modal {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--gray-lighter);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-close-modal:hover {
    background: var(--danger);
    color: white;
    transform: rotate(90deg);
}

.comparison-table-container {
    padding: 2rem;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table thead {
    background: var(--gray-lighter);
}

.comparison-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 700;
    border-bottom: 2px solid var(--gray-light);
}

.comparison-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-lighter);
}

.feature-label {
    font-weight: 700;
    color: var(--gray);
    background: var(--gray-lighter);
}

.price-cell {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
}

.btn-contact-mini {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-contact-mini:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ===== RESPONSIVE FASE 3 ===== */
@media (max-width: 768px) {
    .filters-panel {
        padding: 1.5rem;
    }
    
    .filters-actions {
        flex-direction: column;
    }
    
    .btn-apply-filters,
    .btn-clear-filters {
        width: 100%;
    }
    
    .comparison-bar {
        padding: 1rem;
    }
    
    .comparison-items {
        flex-wrap: nowrap;
    }
    
    .comparison-item {
        min-width: 150px;
    }
    
    .comparison-table-container {
        padding: 1rem;
    }
    
    .comparison-table {
        font-size: 0.875rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 0.5rem;
    }
}