/**
 * QDOS Pregnancy Calculator Styles
 * 
 * Modern, professional styling for the pregnancy calculator
 * Compatible with most WordPress themes
 * Uses customizable fonts via CSS custom properties
 */

/* CSS Custom Properties for Font Customization */
:root {
    --qdos-heading-font: 'Lora', serif;
    --qdos-body-font: 'Nunito', sans-serif;
    --qdos-tab-font: 'Nunito', sans-serif;
    --qdos-button-font: 'Nunito', sans-serif;
    --qdos-btn-primary-background: #0D364A;
    --qdos-btn-primary-hover-background: #04CFBA;
    --qdos-btn-primary-border-color: #0D364A;
    --qdos-btn-primary-hover-border-color: #04CFBA;
    --qdos-btn-primary-text-color: #ffffff;
    --qdos-btn-primary-hover-text-color: #ffffff;
    --qdos-btn-secondary-background: transparent;
    --qdos-btn-secondary-hover-background: #04CFBA;
    --qdos-btn-secondary-border-color: #0D364A;
    --qdos-btn-secondary-hover-border-color: #04CFBA;
    --qdos-btn-secondary-text-color: #0D364A;
    --qdos-btn-secondary-hover-text-color: #fff;
    --qdos-result-primary-border: #0D364A;
    --qdos-result-text-color: #0D364A;
}

/* Reset and Base Styles */
.qdos-pregnancy-calculator * {
    box-sizing: border-box;
}

.qdos-pregnancy-calculator {
    max-width: 800px;
    margin: 0 auto;
    font-family: var(--qdos-body-font);
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #e1e5e9;
}

/* Header Styles */
#qdos-pregnancy-calculator {
    & .qdos-calc-header {
        background: linear-gradient(135deg, #4b87a4 0%, #0D364A 100%);
        color: white;
        padding: 2rem;
        text-align: center;
    }

    & .qdos-calc-title {
        margin: 0 0 0.5rem 0;
        font-size: 1.75rem;
        font-weight: 600;
        letter-spacing: -0.025em;
        font-family: var(--qdos-heading-font);
    }

    & .qdos-calc-subtitle {
        margin: 0;
        opacity: 0.9;
        font-size: 0.95rem;
    }

    & .qdos-calc-timezone {
        display: inline-block;
        background: rgba(255, 255, 255, 0.2);
        padding: 0.25rem 0.75rem;
        border-radius: 20px;
        font-size: 0.8rem;
        margin-left: 0.5rem;
    }

    /* Body and Tabs */
    & .qdos-calc-body {
        padding: 2rem;
    }

    /* Input Panels */
    & .qdos-calc-inputs {
        margin-bottom: 1.5rem;
    }

    & .qdos-input-panel {
        display: none;
        animation: fadeIn 0.3s ease;
    }

    & .qdos-input-panel.active {
        display: block;
    }

    .qdos-input-group {
        margin-bottom: 1.5rem;
        position: relative;
    }

    & .qdos-input-group label {
        display: block;
        margin-bottom: 0.5rem;
        font-weight: 600;
        color: #374151;
        font-size: 0.95rem;
        font-family: var(--qdos-heading-font);
    }

    & .qdos-date-input,
    & .qdos-number-input,
    & .qdos-select-input {
        width: 100%;
        padding: 0.875rem;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        font-size: 1rem;
        background: #ffffff;
        transition: border-color 0.2s ease;
    }

    /* Date input specific styles for consistent dd/mm/yyyy display */
    & .qdos-date-input {
        position: relative;
        font-family: var(--qdos-body-font);
    }

    & .flatpickr-calendar {
        font-family: var(--qdos-body-font);
    }

    & .qdos-input-group select {
        font-family: var(--qdos-body-font);
    }

    & .qdos-date-input:focus,
    & .qdos-number-input:focus,
    & .qdos-select-input:focus {
        outline: none;
        border-color: #0D364A;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    & .qdos-input-help {
        display: block;
        margin-top: 0.5rem;
        font-size: 0.8rem;
        color: #6b7280;
        line-height: 1.4;
    }

    /* Input Separator Styling */
    & .qdos-input-separator {
        text-align: center;
        margin: 1.5rem 0;
        position: relative;
        color: #9ca3af;
        font-weight: 500;
        font-size: 0.875rem;
    }

    & .qdos-input-separator::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        height: 1px;
        background: #e5e7eb;
        z-index: 1;
    }

    & .qdos-input-separator::after {
        content: attr(data-text);
        background: white;
        padding: 0 1rem;
        position: relative;
        z-index: 2;
    }

    /* Cycle Length Group Visibility Control */
    & .qdos-cycle-length-group {
        display: none;
    }

    & .qdos-cycle-length-group.show {
        display: block;
    }

    /* Input Type Visibility Controls */
    & .qdos-input-group.qdos-lmp-group,
    & .qdos-input-group.qdos-ovulation-group,
    & .qdos-input-group.qdos-edd-group {
        display: none;
    }

    & .qdos-input-group.qdos-lmp-group.show,
    & .qdos-input-group.qdos-ovulation-group.show,
    & .qdos-input-group.qdos-edd-group.show {
        display: block;
    }

    /* Action Buttons */
    & .qdos-calc-actions {
        display: flex;
        gap: 1rem;
        justify-content: center;
        margin-bottom: 2rem;
    }

    & .qdos-btn {
        padding: 0.875rem 2rem;
        border: none;
        font-size: 1rem;
        font-weight: 600;
        font-family: var(--qdos-button-font);
        cursor: pointer;
        transition: all 0.2s ease;
        min-width: 120px;
        text-shadow: 0px 0px 10px rgba(0,0,0,0.3);
        border-radius: 10px;
    }

    & .qdos-btn-primary {
        background: var(--qdos-btn-primary-background);
        color: var(--qdos-btn-primary-text-color);
        border: 1px solid var(--qdos-btn-primary-border-color);
        transition: all 0.3s ease;
    }

    & .qdos-btn-primary:hover {
        background: var(--qdos-btn-primary-hover-background);
        border-color: var(--qdos-btn-primary-hover-border-color);
        color: var(--qdos-btn-primary-hover-text-color);
    }

    & .qdos-btn-secondary {
        background: var(--qdos-btn-secondary-background);
        color: var(--qdos-btn-secondary-text-color);
        border: 1px solid var(--qdos-btn-secondary-border-color);
        text-shadow: none !important;
        transition: all 0.3s ease;
    }

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

    /* Results Panel */
    & .qdos-calc-results {
        background: #f8f9fa;
        border-radius: 12px;
        padding: 1.5rem;
        margin-bottom: 1.5rem;
        animation: slideUp 0.4s ease;
    }

    & .qdos-results-title {
        margin: 0 0 1.5rem 0;
        color: #374151;
        font-size: 1.25rem;
        font-weight: 600;
        font-family: var(--qdos-heading-font);
    }

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

    & .qdos-result-card {
        background: white;
        padding: 1.25rem;
        border-radius: 8px;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        border: 1px solid #e5e7eb;
    }

    & .qdos-result-primary {
        border: 1px solid var(--qdos-result-primary-border);
    }

    & .qdos-result-label {
        font-size: 0.85rem;
        color: #6b7280;
        font-weight: 600;
        margin-bottom: 0.5rem;
        text-transform: uppercase;
        letter-spacing: 0.025em;
        font-family: var(--qdos-body-font);
    }

    & .qdos-result-value {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--qdos-result-text-color);
    }

    & .qdos-result-primary .qdos-result-value {
        font-size: 1.3rem;
        color: var(--qdos-result-text-value);
    }

    /* Tooltip Styles */
    & .qdos-tooltip {
        display: inline-block;
        margin-left: 0.5rem;
        cursor: help;
        color: #0D364A;
        font-size: 1rem;
        position: relative;
    }

    & .qdos-result-primary .qdos-tooltip {
        color: rgba(255, 255, 255, 0.8);
    }

    & .qdos-tooltip:hover::after {
        content: attr(data-tooltip);
        position: absolute;
        bottom: calc(100% + 8px);
        left: 50%;
        transform: translateX(-50%);
        background: #1f2937;
        color: white;
        padding: 0.75rem 1rem;
        border-radius: 6px;
        font-size: 0.875rem;
        white-space: normal;
        width: 280px;
        z-index: 1000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        line-height: 1.4;
        text-align: left;
        font-family: var(--qdos-body-font);
        font-weight: normal;
        text-transform: none;
    }

    & .qdos-tooltip:hover::before {
        content: '';
        position: absolute;
        bottom: calc(100% + 2px);
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 0;
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 6px solid #1f2937;
        z-index: 1001;
    }

    /* Additional Information */
    & .qdos-additional-info {
        border-top: 1px solid #e5e7eb;
        padding-top: 1rem;
    }

    & .qdos-info-section h5 {
        margin: 0 0 0.75rem 0;
        color: #374151;
        font-size: 1rem;
        font-weight: 600;
        font-family: var(--qdos-heading-font);
    }

    & #milestones-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    & #milestones-list li {
        padding: 0.5rem 0;
        border-bottom: 1px solid #f3f4f6;
        color: #4b5563;
        font-size: 0.9rem;
    }

    & #milestones-list li:last-child {
        border-bottom: none;
    }

    /* Planner Tool */
    & .qdos-calc-planner {
        background: #fefefe;
        border: 1px solid #e5e7eb;
        border-radius: 8px;
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    & .qdos-planner-title {
        margin: 0 0 1rem 0;
        color: #374151;
        font-size: 1.1rem;
        font-weight: 600;
        font-family: var(--qdos-heading-font);
    }

    & .qdos-planner-input {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        align-items: center;
        margin-bottom: 1rem;
    }

    & .qdos-planner-input label {
        display: block;
        font-weight: 500;
        color: #374151;
        font-size: 0.9rem;
        font-family: var(--qdos-heading-font);
    }

    & .qdos-planner-input input {
        flex: 1;
        min-width: 200px;
    }

    & .qdos-planner-result {
        background: #f0f9ff;
        border: 1px solid #bae6fd;
        border-radius: 6px;
        padding: 1rem;
        color: #0c4a6e;
        font-weight: 600;
        display: none;
    }

    & .qdos-planner-result.show {
        display: block;
        animation: fadeIn 0.3s ease;
    }

    /* Export Panel */
    & .qdos-calc-export {
        border-top: 1px solid #e5e7eb;
        padding-top: 1.5rem;
    }

    & .qdos-export-actions {
        display: flex;
        justify-content: center;
        gap: 1rem;
        flex-wrap: wrap;
    }

    & .qdos-icon {
        margin-right: 0.5rem;
    }

    /* Loading and Error States */
    & .qdos-calc-loading {
        text-align: center;
        padding: 2rem;
        color: #6b7280;
    }

    & .qdos-spinner {
        width: 40px;
        height: 40px;
        border: 4px solid #f3f4f6;
        border-top: 4px solid #0D364A;
        border-radius: 50%;
        animation: spin 1s linear infinite;
        margin: 0 auto 1rem;
    }

    & .qdos-calc-error {
        background: #fef2f2;
        border: 1px solid #fecaca;
        border-radius: 8px;
        padding: 1rem;
        margin: 2rem;
    }

    & .qdos-error-content {
        display: flex;
        align-items: center;
        color: #dc2626;
    }

    & .qdos-error-icon {
        margin-right: 0.75rem;
        font-size: 1.2rem;
    }

    & .qdos-error-message {
        font-weight: 500;
    }
}

/* Print Styles */
.qdos-print-template {
    background: white;
    padding: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.qdos-print-header {
    text-align: center;
    border-bottom: 2px solid #0D364A;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.qdos-print-header h1 {
    color: #0D364A;
    margin: 0 0 0.5rem 0;
    font-family: var(--qdos-heading-font);
}

.qdos-print-date,
.qdos-print-timezone {
    margin: 0.25rem 0;
    color: #6b7280;
    font-size: 0.9rem;
}

.qdos-print-footer {
    border-top: 1px solid #e5e7eb;
    padding-top: 1rem;
    margin-top: 2rem;
    text-align: center;
}

.qdos-print-disclaimer {
    font-size: 0.8rem;
    color: #6b7280;
    font-style: italic;
    margin: 0;
}

/* Print Media Query */
@media print {
    .qdos-pregnancy-calculator {
        box-shadow: none;
        border: none;
    }
    
    #qdos-pregnancy-calculator {
        & .qdos-calc-header {
            background: linear-gradient(135deg, #4b87a4 0%, #0D364A 100%) !important;
            -webkit-print-color-adjust: exact;
        }
        
        & .qdos-calc-tabs,
        & .qdos-calc-actions,
        & .qdos-calc-export {
            display: none;
        }
    }
}

/* PDF Export Optimizations */
.qdos-pdf-export .qdos-pregnancy-calculator {
    box-shadow: none;
    border: none;
    max-width: 100%;
    margin: 0;
}

.qdos-pdf-export .qdos-calc-header {
    background: linear-gradient(135deg, #4b87a4 0%, #0D364A 100%) !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
}

.qdos-pdf-export .qdos-calc-results {
    background: #f9e2ea !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    page-break-inside: avoid;
}

.qdos-pdf-export .qdos-result-card {
    page-break-inside: avoid;
    margin-bottom: 0.75rem;
}

.qdos-pdf-export .qdos-planner-panel {
    page-break-inside: avoid;
}

@media print {
    .qdos-pdf-export {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .qdos-pdf-export .qdos-calc-title {
        font-size: 18pt;
    }
    
    .qdos-pdf-export .qdos-results-title {
        font-size: 16pt;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .qdos-pregnancy-calculator {
        margin: 0;
        border-radius: 0;
        box-shadow: none;
    }

    #qdos-pregnancy-calculator {
        & .qdos-calc-header,
        & .qdos-calc-body {
            padding: 1.5rem;
        }
        
        & .qdos-calc-title {
            font-size: 1.5rem;
        }
        
        & .qdos-calc-tabs {
            justify-content: center;
        }
        
        & .qdos-tab-btn {
            flex: 1;
            min-width: 80px;
            padding: 0.6rem 0.75rem;
            font-size: 0.8rem;
        }
        
        & .qdos-results-grid {
            grid-template-columns: 1fr;
        }
        
        & .qdos-calc-actions {
            flex-direction: column;
            align-items: stretch;
        }
        
        & .qdos-btn {
            width: 100%;
        }
        
        & .qdos-planner-input {
            flex-direction: column;
            align-items: stretch;
        }
    }
    
    .qdos-export-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    #qdos-pregnancy-calculator {
        & .qdos-calc-header,
        & .qdos-calc-body {
            padding: 1rem;
        }
        
        & .qdos-calc-title {
            font-size: 1.3rem;
        }
        
        & .qdos-calc-timezone {
            display: block;
            margin: 0.5rem 0 0 0;
        }
        
        & .qdos-tab-btn {
            font-size: 0.75rem;
            padding: 0.5rem 0.5rem;
        }
    }
}

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

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

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

/* Accessibility Improvements */
#qdos-pregnancy-calculator {
    & .qdos-tab-btn:focus,
    & .qdos-btn:focus,
    & .qdos-date-input:focus,
    & .qdos-number-input:focus,
    & .qdos-select-input:focus {
        outline: 1px solid #0D364A;
        outline-offset: 2px;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .qdos-pregnancy-calculator {
        border: 1px solid #000000;
    }
    
    #qdos-pregnancy-calculator .qdos-tab-btn.active {
        background: #000000;
        color: #ffffff;
        border-color: #000000;
    }
    
    #qdos-pregnancy-calculator .qdos-btn-primary {
        background: #000000;
        color: #ffffff;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .qdos-pregnancy-calculator *,
    .qdos-pregnancy-calculator *::before,
    .qdos-pregnancy-calculator *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}