:root {
    --primary: #2563eb;
    --success: #16a34a;
    --danger: #dc2626;
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-color: #1e293b;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.hidden {
    display: none !important;
}

/* Autenticación */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.auth-card, .card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    width: 100%;
    max-width: 400px;
}

input {
    width: 100%;
    padding: 0.75rem;
    margin: 0.5rem 0 1rem 0;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
}

button {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    color: white;
}

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

/* Layout ERP */
.app-layout {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 250px;
    background: #1e293b;
    color: white;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sidebar nav a {
    color: #94a3b8;
    text-decoration: none;
    display: block;
    padding: 0.5rem 0;
}

.sidebar nav a.active {
    color: white;
    font-weight: bold;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

header {
    background: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
}

.content-body {
    padding: 2rem;
    display: grid;
    gap: 1.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

table th, table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}