:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-light: #f8fafc;
    --sidebar-bg: #1e293b;
    --text-dark: #0f172a;
    --text-light: #f8fafc;
    --border: #e2e8f0;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #ca8a04;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    display: flex;
    min-height: 100vh;
}

/* Login */
.login-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0f172a;
}

.login-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary);
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    width: 100%;
}

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

/* Sidebar & Layout */
.sidebar {
    width: 250px;
    background: var(--sidebar-bg);
    color: var(--text-light);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
}

.sidebar h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.sidebar a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    display: block;
    transition: 0.3s;
}

.sidebar a:hover, .sidebar a.active {
    background: rgba(255,255,255,0.1);
    color: white;
}

.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* Tables & Filters */
.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.filters-card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.table-container {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow-x: auto;
}

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

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: #f1f5f9;
    font-weight: 600;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}
.badge.Puntual { background: #dcfce7; color: #166534; }
.badge.Tardanza { background: #fef08a; color: #854d0e; }
.badge.Incompleto { background: #fee2e2; color: #991b1b; }

/* Totals Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid var(--primary);
}
.card h3 { color: var(--text-dark); font-size: 1rem; margin-bottom: 0.5rem; }
.card p { font-size: 1.5rem; font-weight: bold; }