/* Avana Smile Design - Professional Color Scheme */
:root {
    --primary-blue: #2C5F7C;
    --primary-blue-dark: #1E4A5F;
    --primary-blue-light: #3A7494;
    --accent-gold: #D4AF37;
    --accent-gold-light: #E5C659;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #6C757D;
    --success-green: #28A745;
    --success-light: #D4EDDA;
    --error-red: #DC3545;
    --shadow-light: 0 2px 4px rgba(44, 95, 124, 0.1);
    --shadow-medium: 0 4px 12px rgba(44, 95, 124, 0.15);
    --shadow-heavy: 0 8px 24px rgba(44, 95, 124, 0.2);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    color: var(--primary-blue);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    margin-bottom: 2rem;
}

.logo-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    border-top: 4px solid var(--accent-gold);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo i {
    font-size: 2rem;
    color: var(--accent-gold);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--primary-blue);
}

.contact-info i {
    color: var(--accent-gold);
}

/* Main Content */
.main-content {
    display: flex;
    justify-content: center;
}

/* Invoice Card */
.invoice-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    width: 100%;
    max-width: 800px;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.card-header p {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Form Styles */
.invoice-form {
    padding: 2rem;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--medium-gray);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 1rem;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.section-header i {
    color: var(--accent-gold);
    font-size: 1.1rem;
}

.section-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--primary-blue);
}

/* Input Styles */
input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.1);
}

select {
    cursor: pointer;
}

/* Input Wrapper for Suggestions */
.input-wrapper {
    position: relative;
}

.suggestions-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 2px solid var(--medium-gray);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
}

.suggestion-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--light-gray);
    transition: var(--transition);
}

.suggestion-item:hover,
.suggestion-item.active {
    background: var(--light-gray);
    color: var(--primary-blue);
}

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

/* Currency Input */
.currency-input {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 1rem;
    font-weight: 600;
    color: var(--accent-gold);
    z-index: 1;
}

.currency-input input {
    padding-left: 2.5rem;
}

/* Treatment Cards */
.treatment-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.treatment-card {
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    background: var(--white);
    transition: var(--transition);
}

.treatment-card.selected {
    border-color: var(--accent-gold);
    box-shadow: var(--shadow-medium);
}

.treatment-header {
    display: flex;
    align-items: center;
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.treatment-header:hover {
    background: var(--light-gray);
}

.treatment-icon {
    font-size: 2rem;
    margin-right: 1rem;
    min-width: 3rem;
    text-align: center;
}

.treatment-title {
    flex: 1;
}

.treatment-title h4 {
    margin: 0 0 0.25rem 0;
    color: var(--primary-blue);
    font-size: 1.1rem;
    font-weight: 600;
}

.treatment-title p {
    margin: 0;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.treatment-toggle {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.treatment-toggle input[type="checkbox"] {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--medium-gray);
    transition: var(--transition);
    border-radius: 34px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: var(--white);
    transition: var(--transition);
    border-radius: 50%;
}

.treatment-toggle input:checked + .toggle-slider {
    background-color: var(--accent-gold);
}

.treatment-toggle input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.treatment-content {
    padding: 0 1rem 1rem;
    border-top: 1px solid var(--medium-gray);
    background: var(--light-gray);
}

.treatment-description {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-gold);
}

.treatment-description p {
    margin: 0 0 0.75rem 0;
    line-height: 1.5;
}

.treatment-description p:last-child {
    margin-bottom: 0;
}

.treatment-description strong {
    color: var(--primary-blue);
}

.price-input-group {
    margin-top: 1rem;
}

.price-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.section-description {
    color: var(--dark-gray);
    font-style: italic;
    margin-bottom: 1.5rem;
    text-align: center;
}

/* Selected Treatments Summary */
.selected-treatments {
    margin-bottom: 1.5rem;
}

.treatment-summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    margin-bottom: 0.75rem;
}

.treatment-summary-item:last-child {
    margin-bottom: 0;
}

.treatment-info {
    flex: 1;
}

.treatment-info h5 {
    margin: 0 0 0.25rem 0;
    color: var(--primary-blue);
    font-weight: 600;
}

.treatment-info p {
    margin: 0;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.treatment-pricing {
    text-align: right;
    min-width: 120px;
}

.treatment-pricing .original-price {
    text-decoration: line-through;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.treatment-pricing .promo-price {
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 1.1rem;
}

.treatment-pricing .no-cost {
    color: var(--dark-gray);
    font-style: italic;
    font-size: 0.9rem;
}

/* Promotional Banner */
.promo-banner {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border: 2px solid var(--accent-gold);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { 
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7);
    }
    50% { 
        box-shadow: 0 0 0 8px rgba(212, 175, 55, 0);
    }
}

.promo-icon {
    font-size: 2rem;
    color: var(--accent-gold);
}

.promo-content h4 {
    margin: 0 0 0.25rem 0;
    color: var(--primary-blue);
    font-weight: 600;
}

.promo-content p {
    margin: 0;
    color: var(--primary-blue-dark);
    font-weight: 500;
}

/* Total Calculator */
.total-calculator {
    border: 2px solid var(--accent-gold);
    background: linear-gradient(135deg, var(--success-light) 0%, var(--light-gray) 100%);
}

/* Quantity Controls */
/* Package Option Styles */
.package-option {
    margin-bottom: 1rem;
}

.package-checkbox {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--white);
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.package-checkbox:hover {
    border-color: var(--accent-gold);
    background: var(--light-gray);
}

.package-checkbox input[type="checkbox"] {
    display: none;
}

.package-checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--medium-gray);
    border-radius: 4px;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.package-checkbox input[type="checkbox"]:checked + .package-checkmark {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
}

.package-checkbox input[type="checkbox"]:checked + .package-checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--primary-blue);
    font-weight: bold;
    font-size: 14px;
}

.package-info strong {
    color: var(--primary-blue);
    display: block;
    margin-bottom: 0.25rem;
}

.package-info small {
    color: var(--dark-gray);
    font-size: 0.85rem;
}

.quantity-control {
    margin-bottom: 1rem;
}

.quantity-control:last-child {
    margin-bottom: 0;
}

/* Slider Styles */
.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

input[type="range"] {
    flex: 1;
    height: 6px;
    background: var(--medium-gray);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-gold);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-gold);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.slider-value {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    text-align: center;
}

.slider-value span {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.slider-value small {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

/* Radio Group */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--white);
    border: 2px solid var(--medium-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.radio-option:hover {
    border-color: var(--primary-blue-light);
    background: var(--light-gray);
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--medium-gray);
    border-radius: 50%;
    position: relative;
    transition: var(--transition);
}

.radio-option input[type="radio"]:checked + .radio-custom {
    border-color: var(--accent-gold);
    background: var(--white);
}

.radio-option input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--accent-gold);
    border-radius: 50%;
}

.radio-label strong {
    font-weight: 600;
    color: var(--primary-blue);
}

.radio-label small {
    color: var(--dark-gray);
    font-size: 0.85rem;
}

/* Stepper Controls */
.stepper-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    max-width: 200px;
    margin: 0 auto;
}

.stepper-btn {
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

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

.stepper-container input[type="number"] {
    width: 80px;
    text-align: center;
    margin: 0;
    border: 2px solid var(--primary-blue);
    background: var(--white);
    font-weight: 600;
    color: var(--primary-blue);
}

/* Pricing Calculator */
.pricing-calculator {
    margin-top: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--success-light) 0%, var(--light-gray) 100%);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--success-green);
}

.price-breakdown {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
}

.price-row.original {
    color: var(--dark-gray);
    text-decoration: line-through;
}

.price-row.discount {
    color: var(--success-green);
    font-weight: 600;
}

.price-row.final {
    color: var(--primary-blue);
    font-weight: 700;
    font-size: 1.1rem;
    border-top: 2px solid var(--success-green);
    padding-top: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-info {
    background: linear-gradient(135deg, #2C5F7C 0%, #1E4A5F 100%);
    color: var(--white);
    border: 2px solid #2C5F7C;
}

.btn-info:hover:not(:disabled) {
    background: linear-gradient(135deg, #1E4A5F 0%, #153A4B 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--medium-gray);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 95, 124, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(212, 175, 55, 0.3);
    border-top: 4px solid var(--accent-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    max-width: 90%;
    max-height: 90%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 1.5rem 2rem;
    background: var(--primary-blue);
    color: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.modal-content {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.modal-actions {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--medium-gray);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Invoice Preview */
.invoice-preview {
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.invoice-header {
    background: var(--primary-blue);
    color: var(--white);
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.invoice-logo h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.invoice-contact {
    text-align: right;
    font-size: 0.9rem;
}

.invoice-body {
    padding: 2rem;
}

.invoice-section {
    margin-bottom: 1.5rem;
}

.invoice-section h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.invoice-table th,
.invoice-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--medium-gray);
}

.invoice-table th {
    background: var(--light-gray);
    font-weight: 600;
    color: var(--primary-blue);
}

.invoice-table .text-right {
    text-align: right;
}

.invoice-total {
    background: var(--light-gray);
    font-weight: 700;
    color: var(--primary-blue);
}

.invoice-footer {
    background: var(--light-gray);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .logo-section {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .invoice-form {
        padding: 1.5rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .radio-group {
        gap: 0.5rem;
    }
    
    .radio-option {
        padding: 0.75rem;
    }
    
    .slider-container {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .slider-value {
        align-self: center;
    }
    
    .invoice-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .invoice-contact {
        text-align: left;
    }
    
    .modal {
        max-width: 95%;
        margin: 20px;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .card-header h2 {
        font-size: 1.3rem;
    }
    
    .invoice-form {
        padding: 1rem;
    }
    
    .section-header h3 {
        font-size: 1rem;
    }
    
    .stepper-container {
        max-width: none;
    }
    
    .invoice-table th,
    .invoice-table td {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-10px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Form Validation Styles */
.form-group.error input,
.form-group.error select {
    border-color: var(--error-red);
    background: #fff5f5;
}

.error-message {
    color: var(--error-red);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.error-message i {
    font-size: 0.8rem;
}

/* Success States */
.form-group.success input,
.form-group.success select {
    border-color: var(--success-green);
    background: var(--success-light);
}