:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --glass-border: 1px solid rgba(255, 255, 255, 0.18);
    --text-main: #1e293b;
    --text-muted: #64748b;
    --success: #10b981;
    --danger: #ef4444;
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-main);
}

.payroll-dashboard {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.025em;
}

/* Glassmorphism Card */
.modern-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 1rem;
    border: var(--glass-border);
    box-shadow: var(--card-shadow);
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

/* Filter Section */
.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    align-items: end;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.modern-select, .modern-input {
    width: 100%;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid #cbd5e1;
    background: white;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.modern-select:focus, .modern-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Buttons */
.btn-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.9375rem;
}

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

.btn-primary-modern:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary-modern {
    background: white;
    color: var(--text-main);
    border: 1px solid #cbd5e1;
}

.btn-secondary-modern:hover {
    background: #f1f5f9;
}

/* Table styling */
.table-container {
    overflow-x: auto;
    border-radius: 0.75rem;
    border: 1px solid #e2e8f0;
}

.modern-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.modern-table th {
    background: #f8fafc;
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid #e2e8f0;
}

.modern-table td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.9375rem;
}

.modern-table tr:hover {
    background: #f1f5f9;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-done {
    background: #dcfce7;
    color: #166534;
}

.status-process {
    background: #fef9c3;
    color: #854d0e;
}

/* Loading Overlay */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loader {
    width: 48px;
    height: 48px;
    border: 5px solid var(--primary-color);
    border-bottom-color: transparent;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}