/* Root Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-light: #64748b;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
}

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

.subtitle {
    font-size: 1.125rem;
    font-weight: 400;
    opacity: 0.95;
}

/* Calculator Wrapper */
.calculator-wrapper {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    margin-bottom: 2rem;
}

/* Pricing Cards */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    border-width: 3px;
}

.pricing-card.featured::before {
    content: 'POPULAR';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 3rem;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
    letter-spacing: 0.05em;
}

.card-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.plan-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.total-fee {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.fee-label {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-details {
    margin-bottom: 1.5rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: 0.875rem;
    color: var(--text-medium);
    font-weight: 500;
}

.detail-value {
    font-size: 1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.detail-value.highlight {
    color: var(--primary-color);
    font-size: 1.125rem;
}

.card-disclosure {
    background: #fef3c7;
    border-left: 4px solid var(--accent-color);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-sm);
}

.card-disclosure p {
    font-size: 0.75rem;
    color: var(--text-medium);
    line-height: 1.5;
    margin: 0;
}

.card-disclosure strong {
    color: var(--text-dark);
}

.btn-choose {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-choose:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Global Disclosure */
.global-disclosure {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 2px solid var(--accent-color);
}

.global-disclosure h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.global-disclosure p {
    color: var(--text-medium);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.global-disclosure p:last-child {
    margin-bottom: 0;
}

.global-disclosure strong {
    color: var(--text-dark);
    font-weight: 600;
}

.additional-info {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Admin Panel */
.admin-panel {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
    border: 2px solid var(--primary-color);
}

.admin-panel.hidden {
    display: none;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.admin-header h2 {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.toggle-admin {
    padding: 0.5rem 1rem;
    background: var(--text-light);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.toggle-admin:hover {
    background: var(--text-medium);
}

.admin-section h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.admin-section h4 {
    color: var(--text-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.admin-note {
    color: var(--text-medium);
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary-color);
}

.fee-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.input-wrapper {
    position: relative;
}

.currency {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-medium);
    font-weight: 600;
    font-size: 1.125rem;
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.btn-update {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-update:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Floating Admin Button */
.floating-admin-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    z-index: 100;
}

.floating-admin-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.floating-admin-btn.hidden {
    display: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

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

.modal-content {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

#modalDetails {
    margin-bottom: 2rem;
}

#modalDetails .detail-row {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

#modalDetails .detail-label {
    font-size: 1rem;
}

#modalDetails .detail-value {
    font-size: 1.125rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 150px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }
    
    .header h1 {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .calculator-wrapper {
        padding: 1.5rem;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .total-fee {
        font-size: 2rem;
    }
    
    .fee-inputs {
        grid-template-columns: 1fr;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
    
    .floating-admin-btn {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
}

@media print {
    .floating-admin-btn,
    .admin-panel {
        display: none !important;
    }
}