/* Professional Enterprise Payroll System Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background-color: #f1f5f9;
    color: #1e293b;
    line-height: 1.5;
    font-size: 14px;
    min-height: 100vh;
    padding: 0;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: #ffffff;
    min-height: 100vh;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05);
}

/* Professional Header */
header {
    background: #1e293b;
    color: #ffffff;
    padding: 24px 32px;
    border-bottom: 1px solid #334155;
}

header h1 {
    font-size: 28px;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.025em;
}

header p {
    font-size: 14px;
    color: #94a3b8;
    margin: 4px 0 0 0;
    font-weight: 400;
}

/* Navigation Bar / Progress Steps */
.progress-bar {
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.step {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 20px 24px;
    background: #f8fafc;
    border-right: 1px solid #e2e8f0;
    color: #64748b;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.step:last-child {
    border-right: none;
}

.step:hover {
    background: #f1f5f9;
}

.step.active {
    background: #3b82f6;
    color: #ffffff;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    font-size: 12px;
    font-weight: 600;
}

.step.active .step-number {
    background: #ffffff;
    color: #3b82f6;
}

.step-title {
    font-size: 14px;
    font-weight: 500;
}

/* Main Content Area */
.step-content {
    display: none;
    padding: 32px;
    min-height: calc(100vh - 140px);
}

.step-content.active {
    display: block;
}

.step-content h2 {
    font-size: 24px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 32px 0;
    letter-spacing: -0.025em;
}

/* Professional Form Styling */
.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    font-weight: 600;
    color: #374151;
    font-size: 14px;
    margin-bottom: 8px;
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: #ffffff;
    color: #1f2937;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

input[type="text"]:hover,
input[type="number"]:hover {
    border-color: #9ca3af;
}

/* Professional Button Styling */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background: #3b82f6;
    color: #ffffff;
    border: 1px solid #3b82f6;
}

.btn-primary:hover {
    background: #2563eb;
    border-color: #2563eb;
}

.btn-primary:active {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

.btn-secondary {
    background: #ffffff;
    color: #374151;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #f9fafb;
    border-color: #9ca3af;
}

.btn-secondary:active {
    background: #f3f4f6;
}

.navigation-buttons {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

/* Data Display Cards */
.wage-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.wage-item {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 24px;
    text-align: center;
}

.wage-item label {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #6b7280;
    margin: 0 0 8px 0;
    font-weight: 600;
}

.wage-item span {
    font-size: 32px;
    font-weight: 700;
    color: #1f2937;
    display: block;
    letter-spacing: -0.025em;
}

/* Employee Summary */
.employee-summary {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
}

.employee-summary h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

/* Breakdown Display */
.breakdown-display {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 24px;
}

.gross-pay {
    text-align: center;
    padding: 20px;
    background: #f0f9f0;
    border: 1px solid #bbf7d0;
    border-radius: 6px;
    margin-bottom: 24px;
}

.gross-pay h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #166534;
    margin: 0 0 8px 0;
    font-weight: 600;
}

.gross-pay span {
    font-size: 28px;
    font-weight: 700;
    color: #166534;
    display: block;
}

.deductions h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
    margin: 0 0 16px 0;
    padding-bottom: 8px;
    border-bottom: 1px solid #e5e7eb;
}

.deduction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #f3f4f6;
}

.deduction-item:last-child {
    border-bottom: none;
}

.deduction-item label {
    font-size: 14px;
    font-weight: 400;
    color: #374151;
    margin: 0;
}

.deduction-item span {
    font-size: 14px;
    font-weight: 600;
    color: #dc2626;
}

.total-deductions {
    background: #fef3c7;
    border: 1px solid #fbbf24;
    border-radius: 6px;
    padding: 16px;
    margin: 16px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.total-deductions label {
    font-size: 14px;
    font-weight: 600;
    color: #92400e;
    margin: 0;
}

.total-deductions span {
    font-size: 16px;
    font-weight: 700;
    color: #92400e;
}

.net-pay {
    text-align: center;
    padding: 20px;
    background: #f0f9f0;
    border: 1px solid #bbf7d0;
    border-radius: 6px;
    margin-top: 24px;
}

.net-pay h4 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #166534;
    margin: 0 0 8px 0;
    font-weight: 600;
}

.net-pay span {
    font-size: 32px;
    font-weight: 700;
    color: #166534;
    display: block;
    letter-spacing: -0.025em;
}

/* Loading States */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #e5e7eb;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

.loading p {
    color: #ffffff;
    font-size: 14px;
    font-weight: 500;
}

/* Status Bar */
.status-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #1f2937;
    color: #d1d5db;
    padding: 12px 24px;
    border-top: 1px solid #374151;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sync-status {
    display: flex;
    align-items: center;
    font-size: 13px;
    font-weight: 500;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    background: #10b981;
}

.status-indicator.syncing {
    background: #f59e0b;
    animation: pulse 1.5s infinite;
}

.status-indicator.error {
    background: #ef4444;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Error Messages */
.error-message {
    position: fixed;
    top: 24px;
    right: 24px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 16px;
    border-radius: 8px;
    max-width: 400px;
    z-index: 1001;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.error-message button {
    background: #dc2626;
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    margin-top: 8px;
}

.error-message button:hover {
    background: #b91c1c;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 0;
    }
    
    .container {
        border-radius: 0;
    }
    
    header {
        padding: 20px 16px;
    }
    
    .step-content {
        padding: 24px 16px;
    }
    
    .progress-bar {
        flex-direction: column;
        gap: 0;
    }
    
    .step {
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
        padding: 16px 20px;
    }
    
    .step:last-child {
        border-bottom: none;
    }
    
    .wage-display {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .navigation-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .status-bar,
    .navigation-buttons,
    .btn {
        display: none !important;
    }
    
    .container {
        box-shadow: none;
        background: white;
    }
    
    .step-content {
        padding: 0;
        min-height: auto;
    }
}

/* High Contrast Support */
@media (prefers-contrast: high) {
    .container {
        border: 2px solid #000000;
    }
    
    input[type="text"],
    input[type="number"] {
        border: 2px solid #000000;
    }
    
    .btn-primary {
        background: #000000;
        border-color: #000000;
    }
    
    .wage-item,
    .breakdown-display {
        border: 2px solid #000000;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #0f172a;
        color: #e2e8f0;
    }
    
    .container {
        background: #1e293b;
        box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1);
    }
    
    input[type="text"],
    input[type="number"] {
        background: #334155;
        border-color: #475569;
        color: #e2e8f0;
    }
    
    .wage-item,
    .breakdown-display {
        background: #334155;
        border-color: #475569;
    }
    
    .wage-item span {
        color: #e2e8f0;
    }
}