:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    padding: 2rem;
}

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

nav {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s;
}

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

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

h1 {
    font-size: 1.875rem;
    font-weight: 700;
}

.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.upload-section {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filters-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #f1f5f9;
    border-radius: 0.5rem;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.filter-group select,
.filter-group input {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    background: white;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

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

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

.btn-danger {
    background-color: #dc2626;
    color: white;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

input[type="file"] {
    background: white;
    padding: 0.4rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    flex-grow: 1;
}

.table-container {
    overflow-x: auto;
}

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

th {
    background: #f1f5f9;
    padding: 0.75rem 1rem;
    font-weight: 600;
    border-bottom: 2px solid var(--border);
}

th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
}

th.sortable:hover {
    background-color: #e2e8f0;
}

.sort-icon::after {
    content: ' ↕';
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.4;
    margin-left: 4px;
}

th.sort-asc .sort-icon::after {
    content: ' ↑';
    opacity: 1;
    color: var(--primary);
}

th.sort-desc .sort-icon::after {
    content: ' ↓';
    opacity: 1;
    color: var(--primary);
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
}

tr:hover {
    background: #f8fafc;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

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

.importe {
    text-align: right;
    font-family: monospace;
    font-weight: 600;
}

.total-row {
    background: #f1f5f9;
    font-weight: 700;
}

.total-row td {
    border-top: 2px solid var(--border);
}

.status-msg {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    display: none;
}

.status-success {
    background: #dcfce7;
    color: #166534;
    display: block;
}

.status-error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

#loading {
    display: none;
    text-align: center;
    padding: 2rem;
}