/* Variables de Diseño Premium */
:root {
    --bg-main: #f5f7fa;
    --bg-card: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent-blue: #0066cc;
    --accent-blue-hover: #0077ed;

    /* Colores Semáforo */
    --status-buy: #34c759;
    /* Verde Apple */
    --status-warning: #ffcc00;
    /* Amarillo Apple */
    --status-avoid: #ff3b30;
    /* Rojo Apple */
    --status-waiting: #c7c7cc;
    /* Gris Neutro */

    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 10px 40px rgba(0, 0, 0, 0.08);

    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;

    --transition-fast: 0.2s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

h1,
h2,
h3 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

/* Contenedor Principal */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.logo-area h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo-area h1 span {
    color: var(--accent-blue);
}

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

/* Botones */
.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

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

.btn.primary:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-2px);
}

/* Sección de Filtros */
.filters-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.category-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 20px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    border-color: var(--text-secondary);
}

.tab-btn.active {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.settings-panel .input-group {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.settings-panel label {
    font-weight: 600;
    font-size: 0.9rem;
}

.settings-panel input {
    width: 80px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-align: right;
    font-weight: 600;
}

/* Tabla de Mercado */
.market-container {
    padding-bottom: 2rem;
}

.table-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 2rem;
}

.market-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.market-table th,
.market-table td {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.market-table th {
    background: #fafbfc;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.market-table tr:last-child td {
    border-bottom: none;
}

.market-table tr:hover {
    background: #f8faff;
}

.col-brief {
    width: 40%;
}

.col-store {
    width: 15%;
}

.col-price {
    width: 15%;
}

.col-price-usd {
    width: 15%;
    text-align: right;
}

.col-link {
    width: 15%;
    text-align: center;
}

.row-brief {
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

.row-store {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.row-price {
    font-family: 'Outfit';
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--accent-blue);
}

.btn-view {
    padding: 0.5rem 1rem;
    background: var(--accent-blue);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-view:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.empty-state {
    text-align: center;
    padding: 4rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--border-color);
}

/* Estilos de tabla responsivos */
@media (max-width: 768px) {
    .market-table thead {
        display: none;
    }

    .market-table tr {
        display: block;
        padding: 1rem;
        border-bottom: 2px solid var(--bg-main);
    }

    .market-table td {
        display: block;
        padding: 0.5rem 0;
        width: 100% !important;
        text-align: left;
        border-bottom: none;
    }

    .col-link {
        text-align: left !important;
        margin-top: 0.5rem;
    }
}


/* Loading State */
.loading-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 102, 204, 0.1);
    border-left-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* Responsividad */
@media (max-width: 768px) {
    .main-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .filters-section {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Animación Spinner en Botón */
.spinner-inline {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin-small 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

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

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}