/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Unique color palette - warm oranges and teals */
    --primary-color: #e85d04;
    --primary-dark: #d84a00;
    --primary-light: #ff7722;
    --secondary-color: #06a77d;
    --secondary-dark: #048a65;
    --secondary-light: #0dbf8f;
    
    /* Neutral colors */
    --background: #fafafa;
    --surface: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #5f5f5f;
    --text-light: #8a8a8a;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #fef3e8 0%, #e8f8f3 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Header */
.header {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.header-content {
    position: relative;
    display: inline-block;
}

.main-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInDown 0.6s ease-out;
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--text-secondary);
    font-weight: 400;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Calculator Section */
.calculator-section {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    animation: fadeIn 0.6s ease-out 0.3s both;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.calculator-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Employee Type Selector */
.employee-type-selector {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    padding: 6px;
    background: var(--background);
    border-radius: var(--radius-md);
}

.type-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.type-btn:hover {
    color: var(--text-primary);
    background: rgba(232, 93, 4, 0.08);
}

.type-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Forms */
.calculator-form {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.calculator-form.active {
    display: block;
}

.form-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.form-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 640px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-group:first-child {
        grid-column: span 1;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label {
    color: var(--primary-color);
}

.form-group input {
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--surface);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(232, 93, 4, 0.1);
}

.form-group input:hover:not(:focus) {
    border-color: var(--text-light);
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.submit-btn:active {
    transform: translateY(0);
}

/* Results Section */
.results-section {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    animation: fadeIn 0.6s ease-out 0.4s both;
}

.results-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.results-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-light);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    opacity: 0.3;
    stroke: var(--text-light);
}

.empty-state p {
    font-size: 1rem;
    line-height: 1.5;
}

/* Result Card */
.result-card {
    background: linear-gradient(135deg, rgba(232, 93, 4, 0.05), rgba(6, 167, 125, 0.05));
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    animation: slideInRight 0.4s ease-out;
    transition: all 0.3s ease;
}

.result-card:hover {
    border-color: var(--primary-light);
    transform: translateX(4px);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.employee-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.employee-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-employee {
    background: rgba(232, 93, 4, 0.15);
    color: var(--primary-dark);
}

.badge-fulltime {
    background: rgba(6, 167, 125, 0.15);
    color: var(--secondary-dark);
}

.badge-parttime {
    background: rgba(251, 191, 36, 0.15);
    color: #d97706;
}

.result-details {
    display: grid;
    gap: var(--spacing-sm);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

.total-row {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--border-color);
    font-size: 1.125rem;
}

.total-row .detail-label {
    font-weight: 600;
    color: var(--text-primary);
}

.total-row .detail-value {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 640px) {
    .employee-type-selector {
        flex-direction: column;
    }
    
    .type-btn {
        width: 100%;
    }
    
    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}