:root {
    --primary-color: #1a365d;
    --secondary-color: #3182ce;
    --accent-color: #63b3ed;
    --success-color: #38a169;
    --warning-color: #ed8936;
    --danger-color: #e53e3e;
    --info-color: #4299e1;
    --light-color: #f7fafc;
    --dark-color: #2d3748;
    --white: #ffffff;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-dark: #2d3748;
    --text-medium: #4a5568;
    --text-light: #718096;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--background-color) 0%, #e2e8f0 100%);
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-bottom: 80px;
    min-height: 100vh;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    position: relative;
    overflow: hidden;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container {
    flex-shrink: 0;
}

.app-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    transition: var(--transition);
}

.app-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.header-text {
    flex: 1;
    text-align: left;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="90" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
    pointer-events: none;
}

.header-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-text p {
    position: relative;
    z-index: 1;
    opacity: 0.9;
    font-size: 1.1rem;
    margin: 0;
}

.header-info {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: flex-start;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.content-section {
    display: none;
}

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

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Cards */
.card {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color);
}

.card:hover::before {
    opacity: 1;
}

.card h2, .card h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.25rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.card h2::after, .card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    border-radius: 2px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

/* Dashboard grid responsive rules moved to responsive.css */

/* Speedometer */
.speedometer-container {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--surface-color) 100%);
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
}

.speedometer-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

.speedometer-info {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.current-revenue, .percentage {
    text-align: center;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.current-revenue:hover, .percentage:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.current-revenue span:first-child,
.percentage span:first-child {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-mono);
    margin-bottom: 0.5rem;
}

.current-revenue small,
.percentage small {
    color: var(--text-medium);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* DAS Card */
.das-info {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--light-color) 0%, var(--surface-color) 100%);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-light);
}

.das-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-mono);
    margin: 1rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.das-value span:first-child {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: var(--success-color);
    margin-bottom: 0.5rem;
}

.das-breakdown {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--background-color);
}

.tax-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

/* Alerts */
.alert-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.75rem;
    border-left: 4px solid;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.alert-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.05;
    background: currentColor;
    pointer-events: none;
}

.alert-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.alert-item i {
    margin-right: 0.75rem;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.alert-item.success {
    background: linear-gradient(135deg, rgba(56, 161, 105, 0.1) 0%, rgba(72, 187, 120, 0.05) 100%);
    color: var(--success-color);
    border-left-color: var(--success-color);
}

.alert-item.warning {
    background: linear-gradient(135deg, rgba(237, 137, 54, 0.1) 0%, rgba(251, 191, 36, 0.05) 100%);
    color: var(--warning-color);
    border-left-color: var(--warning-color);
}

.alert-item.danger {
    background: linear-gradient(135deg, rgba(229, 62, 62, 0.1) 0%, rgba(252, 129, 129, 0.05) 100%);
    color: var(--danger-color);
    border-left-color: var(--danger-color);
}

.alert-item.info {
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.1) 0%, rgba(99, 179, 237, 0.05) 100%);
    color: var(--info-color);
    border-left-color: var(--info-color);
}

/* Alert Close Button */
.alert-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.25rem;
    margin-left: auto;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0.7;
    flex-shrink: 0;
}

.alert-close:hover {
    background: rgba(0, 0, 0, 0.1);
    opacity: 1;
    transform: scale(1.1);
}

.alert-close:active {
    transform: scale(0.95);
}

.alert-close i {
    font-size: 0.8rem;
    margin: 0;
}

/* Responsive alert close button */
@media (max-width: 768px) {
    .alert-close {
        width: 28px;
        height: 28px;
        padding: 0.5rem;
    }
    
    .alert-close i {
        font-size: 0.9rem;
    }
}

/* Employee Card */
.employee-info {
    text-align: center;
}

.employee-status {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: 8px;
}

.employee-status i {
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

/* Revenue Section */
.revenue-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.summary-card {
    background: var(--white);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
}

.summary-card h3 {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.summary-value {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary-color);
}

.revenue-list {
    max-height: 400px;
    overflow-y: auto;
}

.revenue-item {
    background: var(--white);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
}

.revenue-info h4 {
    margin-bottom: 0.25rem;
    color: var(--primary-color);
}

.revenue-info small {
    color: var(--text-light);
}

.revenue-amount {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--success-color);
}

.revenue-actions {
    display: flex;
    gap: 0.5rem;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    min-width: 140px;
    position: relative;
    overflow: hidden;
    font-family: var(--font-family);
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2c5aa0 0%, #4a90e2 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--surface-color);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--light-color);
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #fc8181 100%);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c53030 0%, #f56565 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-danger:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-small {
    padding: 0.5rem;
    font-size: 0.8rem;
    min-width: auto;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: var(--font-family);
    background: var(--surface-color);
    color: var(--text-dark);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
    transform: translateY(-1px);
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--accent-color);
}

.form-group small {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--background-color);
}

.modal-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.close-btn:hover {
    background-color: var(--background-color);
    color: var(--text-dark);
}

.modal form {
    padding: 1.5rem;
}

/* Simulator */
.simulator-container {
    display: grid;
    gap: 2rem;
}

@media (min-width: 768px) {
    .simulator-container {
        grid-template-columns: 1fr 1fr;
    }
}

.comparison-table {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--surface-color);
}

.comparison-header,
.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    transition: var(--transition);
}

.comparison-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.comparison-row:hover {
    background: var(--light-color);
    transform: scale(1.01);
}

.comparison-header h4 {
    padding: 1.5rem 1rem;
    margin: 0;
    text-align: center;
    font-size: 1rem;
    position: relative;
}

.comparison-header h4::after {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--white);
    border-radius: 1px;
}

.comparison-item {
    padding: 1.25rem;
    border-right: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
    transition: var(--transition);
}

.comparison-item:last-child {
    border-right: none;
}

.comparison-item .label {
    font-weight: 500;
    color: var(--text-medium);
}

.comparison-item .value {
    font-weight: 600;
    color: var(--text-dark);
    font-family: var(--font-mono);
}

.comparison-row:nth-child(even) {
    background-color: #f8f9fa;
}

.comparison-row.highlight {
    background-color: rgba(52, 152, 219, 0.1);
    font-weight: bold;
}

.simulation-recommendation {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(56, 161, 105, 0.1) 0%, rgba(72, 187, 120, 0.05) 100%);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--success-color);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.simulation-recommendation::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="lightbulb" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="currentColor" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23lightbulb)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.simulation-recommendation h4 {
    color: var(--success-color);
    margin-bottom: 1rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.simulation-recommendation p {
    color: var(--text-dark);
    line-height: 1.6;
    position: relative;
    z-index: 1;
    font-size: 0.95rem;
}

.recommendation-text.high-priority {
    color: var(--danger-color);
    font-weight: 600;
}

.recommendation-text.medium-priority {
    color: var(--warning-color);
    font-weight: 500;
}

.recommendation-text.low-priority {
    color: var(--success-color);
    font-weight: 500;
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--background-color);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-dark);
    line-height: 1.6;
    animation: fadeIn 0.3s ease;
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Apply animations */
.card {
    animation: slideInUp 0.6s ease-out;
}

.alert-item {
    animation: fadeIn 0.4s ease-out;
}

.btn-primary:active {
    animation: pulse 0.2s ease-in-out;
}

/* Icon Styles */
.card h2 i,
.card h3 i,
.section-header h2 i {
    margin-right: 0.5rem;
    color: var(--secondary-color);
    font-size: 1.1em;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
    transition: var(--transition);
}

.nav-item:hover i {
    transform: scale(1.1);
}

.alert-item i {
    font-size: 1.3rem;
    flex-shrink: 0;
}

.btn-primary i,
.btn-secondary i,
.btn-danger i {
    font-size: 0.9em;
    margin-right: 0.5rem;
}

.speedometer-info small i {
    margin-right: 0.25rem;
    opacity: 0.8;
}

/* Speedometer Responsive - Moved to responsive.css */

.das-value small i {
    margin-right: 0.25rem;
    opacity: 0.8;
}

.tax-item i {
    margin-right: 0.5rem;
    color: var(--text-medium);
    width: 16px;
    text-align: center;
}

.info-card h3 i {
    margin-right: 0.5rem;
    color: var(--white);
}

footer i {
    margin-right: 0.25rem;
    opacity: 0.8;
}

/* Icon animations */
@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.nav-item.active i {
    animation: iconPulse 2s infinite;
}

/* Icon color variations */
.fas.fa-chart-line,
.fas.fa-chart-pie,
.fas.fa-chart-bar {
    color: var(--info-color);
}

.fas.fa-calculator,
.fas.fa-cogs,
.fas.fa-sliders-h {
    color: var(--warning-color);
}

.fas.fa-bell,
.fas.fa-exclamation-triangle {
    color: var(--danger-color);
}

.fas.fa-users,
.fas.fa-user-plus,
.fas.fa-users-cog {
    color: var(--success-color);
}

.fas.fa-wallet,
.fas.fa-coins {
    color: var(--accent-color);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    display: flex;
    justify-content: space-around;
    padding: 1rem 0;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    border-top: 1px solid var(--border-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
    font-size: 0.8rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    min-width: 60px;
    position: relative;
    font-weight: 500;
}

.nav-item:hover {
    color: var(--secondary-color);
    background: var(--light-color);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--secondary-color);
    background: rgba(49, 130, 206, 0.1);
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item.active {
    color: var(--secondary-color);
    background-color: rgba(52, 152, 219, 0.1);
}

.nav-item:hover {
    color: var(--primary-color);
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%);
    color: var(--white);
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.95rem;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

footer p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

footer a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary, .btn-danger {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .comparison-header h4,
    .comparison-item {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    /* Header responsive */
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .header-text {
        text-align: center;
    }
    
    .header-text h1 {
        font-size: 2rem;
    }
    
    .app-logo {
        width: 60px;
        height: 60px;
    }
    
    .header-info {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .modal-content {
        margin: 1rem;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--background-color);
    border-top: 2px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Settings Section */
.settings-container {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .settings-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .settings-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

.settings-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 768px) {
    .settings-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

.settings-actions .btn-secondary {
    flex: 1;
    min-width: 200px;
}

/* Form improvements for settings */
.settings-container .form-group {
    margin-bottom: 1.5rem;
}

.settings-container .form-group label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.settings-container .form-group input,
.settings-container .form-group select {
    border: 2px solid var(--background-color);
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.settings-container .form-group input:focus,
.settings-container .form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.settings-container .form-group small {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    display: block;
    line-height: 1.4;
}

.settings-container .form-actions {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--background-color);
}

.settings-container .card h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--background-color);
    font-size: 1.1rem;
}

/* Info card styles */
.info-card {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    pointer-events: none;
}

.info-card h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.info-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
    z-index: 1;
}

.info-card li {
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    line-height: 1.6;
    font-size: 0.95rem;
}

.info-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--white);
    font-weight: bold;
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.2);
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-card strong {
    color: var(--white);
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Settings card specific styles */
.settings-container .card {
    position: relative;
    overflow: hidden;
}

.settings-container .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* Input validation states */
.settings-container .form-group input:invalid {
    border-color: var(--danger-color);
}

.settings-container .form-group input:valid {
    border-color: var(--success-color);
}

/* File input styling */
#import-settings-file {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

/* Responsive adjustments for settings */
@media (max-width: 768px) {
    .settings-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .settings-container .card {
        padding: 1rem;
    }
    
    .settings-actions {
        flex-direction: column;
    }
    
    .settings-actions .btn-secondary {
        min-width: auto;
        width: 100%;
    }
}

/* Disclaimer Section */
.disclaimer-section {
    background: linear-gradient(135deg, #fff7ed 0%, #fed7aa 100%);
    border: 2px solid var(--warning-color);
    border-radius: var(--border-radius-lg);
    margin: 1rem 2rem 2rem 2rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.disclaimer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--warning-color), #f59e0b);
}

.disclaimer-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.disclaimer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.disclaimer-content h3 {
    color: var(--warning-color);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    margin: 0;
}

.disclaimer-close {
    background: var(--warning-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
}

.disclaimer-close:hover {
    background: var(--white);
    color: var(--warning-color);
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.disclaimer-close:active {
    transform: scale(0.95);
}

.disclaimer-text {
    margin-bottom: 1.5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.disclaimer-text p {
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-dark);
    font-weight: 500;
}

.disclaimer-text p:last-child {
    margin-bottom: 0;
}

.disclaimer-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn-disclaimer {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--warning-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 2px solid transparent;
    box-shadow: var(--shadow-sm);
}

.btn-disclaimer:hover {
    background: var(--white);
    color: var(--warning-color);
    border-color: var(--warning-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-disclaimer i {
    font-size: 1rem;
}

/* Disclaimer Toggle Button */
.disclaimer-toggle {
    max-width: 1200px;
    margin: 0.5rem auto 0 auto;
    padding: 0 2rem;
}

.btn-disclaimer-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--warning-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-disclaimer-toggle:hover {
    background: var(--white);
    color: var(--warning-color);
    box-shadow: var(--shadow);
}

.btn-disclaimer-toggle i {
    font-size: 1rem;
}

/* Disclaimer Responsive */
@media (max-width: 768px) {
    .disclaimer-section {
        margin: 1rem;
        padding: 1rem;
    }
    
    .disclaimer-header {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    
    .disclaimer-content h3 {
        font-size: 1.2rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .disclaimer-close {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }
    
    .disclaimer-text p {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .disclaimer-actions {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .btn-disclaimer {
        width: 100%;
        max-width: 280px;
        justify-content: center;
        padding: 0.7rem 1rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 1rem; }
.mt-1 { margin-top: 1rem; }
.hidden { display: none !important; }
.visible { display: block !important; }