/* EquivaFiltros 2026 - Dark Mode Permanent Styles */

/* === Variables CSS - Dark Mode Only === */
:root {
    /* Dark Colors */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    --color-secondary: #10b981;
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-surface-elevated: #334155;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-border: #334155;
    --color-border-hover: #475569;
    --color-error: #ef4444;
    --color-success: #10b981;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Borders */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);

    /* Transitions */
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

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

/* === Header === */
.header {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.header-content {
    flex: 1;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.tagline {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
}

/* === Search Section === */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-container {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.search-box {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.search-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
    transition: all var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: var(--color-surface);
}

.search-input::placeholder {
    color: var(--color-text-secondary);
}

.search-btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

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

/* Filters */
.filters {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filters label {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.marca-select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-background);
    color: var(--color-text);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
}

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

.marca-select:hover {
    border-color: var(--color-border-hover);
}

/* Search Stats */
.search-stats {
    margin-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
}

.separator {
    opacity: 0.5;
}

/* === Results Section === */
.results-section {
    min-height: 400px;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.empty-state p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* Examples */
.examples {
    margin-top: var(--spacing-lg);
}

.examples-title {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.example-btn {
    padding: 0.5rem 1rem;
    margin: 0.25rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-primary-light);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

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

/* No Results */
.no-results-state {
    text-align: center;
    padding: var(--spacing-xl);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.no-results-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.no-results-state p {
    color: var(--color-text-secondary);
}

/* Results Container */
.results-container {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.results-header h2 {
    font-size: 1.5rem;
    color: var(--color-text);
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-primary-light);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* Results Table */
.results-table {
    overflow-x: auto;
}

.equivalence-card {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition);
}

.equivalence-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.equivalence-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.equivalence-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.marca-label {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.codigo-value {
    font-weight: 600;
    color: var(--color-primary-light);
    font-size: 1rem;
}

.codigo-highlight {
    background: rgba(59, 130, 246, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    color: var(--color-primary-light);
}

/* === History Section === */
.history-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.history-header h3 {
    font-size: 1.2rem;
    color: var(--color-text);
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-primary-light);
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem;
    transition: all var(--transition);
}

.btn-text:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.history-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.history-item {
    padding: 0.6rem 1.2rem;
    background: var(--color-background);
    border: 2px solid var(--color-border-hover);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
}

.history-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.history-empty {
    color: var(--color-text-secondary);
    font-style: italic;
}

/* === Footer === */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xl);
}

.footer p {
    margin: 0.25rem 0;
}

.footer-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* === Utility Classes === */
.hidden {
    display: none !important;
}

/* === Responsive === */
@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }

    .search-box {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .equivalence-grid {
        grid-template-columns: 1fr;
    }

    .header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }

    .search-container {
        padding: var(--spacing-md);
    }

    .results-container {
        padding: var(--spacing-md);
    }
}



/* ========================================
   AUTOCOMPLETE - ESTILOS LIMPIOS
   ======================================== */

.search-container {
    position: relative;
    width: 100%;
}

.autocomplete-dropdown {
    position: absolute;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 800px;
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    max-height: 350px;
    overflow-y: auto;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    z-index: 9999;
}

.autocomplete-dropdown.hidden {
    display: none;
}

.autocomplete-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px solid #f3f4f6;
    background: white;
}

.autocomplete-item:first-child {
    border-radius: 10px 10px 0 0;
}

.autocomplete-item:last-child {
    border-bottom: none;
    border-radius: 0 0 10px 10px;
}

.autocomplete-item:hover,
.autocomplete-item.selected {
    background-color: #f0f9ff;
    padding-left: 24px;
}

.autocomplete-code {
    font-weight: 600;
    color: #1f2937;
    font-size: 15px;
}

.autocomplete-brand {
    font-size: 10px;
    color: #6b7280;
    background: #f3f4f6;
    padding: 4px 10px;
    border-radius: 4px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Scrollbar personalizado */
.autocomplete-dropdown::-webkit-scrollbar {
    width: 8px;
}

.autocomplete-dropdown::-webkit-scrollbar-track {
    background: #f9fafb;
    border-radius: 0 10px 10px 0;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.autocomplete-dropdown::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Focus en search input */
.search-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}