/* Mortgage Calculator NZ - UX Enhancements CSS */
/* Styles for: Amortization visualization, advanced options, mobile sticky button, tooltips */

:root {
    --primary-blue: #1e3a8a;
    --primary-blue-light: #3b82f6;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f5;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-900: #1e293b;
    --text-primary: #2c3e50;
    --text-secondary: #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);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ===== AMORTIZATION VISUALIZATION ===== */
.amortization-visualization {
    background: white;
    padding: 25px;
    border-radius: var(--radius-lg);
    margin: 25px 0;
    border: 1px solid var(--gray-200);
}

.amortization-visualization h4 {
    color: var(--primary-blue);
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 600;
}

.amortization-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 250px;
    margin: 20px 0;
    padding: 20px 10px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.chart-placeholder {
    align-self: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
}

.chart-bar-container {
    flex: 1;
    max-width: 80px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.chart-bar-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 8px;
}

.chart-bar-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column-reverse;
    background: var(--gray-200);
    border-radius: 4px 4px 0 0;
    position: relative;
    transition: all var(--transition-base);
    cursor: pointer;
}

.chart-bar-wrapper:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.chart-bar-wrapper:hover .chart-bar-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-10px);
}

.chart-bar-segment {
    width: 100%;
    transition: all var(--transition-slow);
}

.chart-bar-segment.principal {
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
}

.chart-bar-segment.interest {
    background: linear-gradient(180deg, #f87171 0%, var(--error) 100%);
}

.chart-bar-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: white;
    padding: 12px 15px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 100;
    box-shadow: var(--shadow-lg);
    line-height: 1.6;
}

.chart-bar-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--gray-900);
}

.amortization-legend {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--gray-200);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.legend-color.principal {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
}

.legend-color.interest {
    background: linear-gradient(135deg, #f87171 0%, var(--error) 100%);
}

/* ===== ADVANCED OPTIONS ===== */
.advanced-options-wrapper {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px dashed var(--gray-200);
}

.advanced-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
    cursor: pointer;
    transition: all var(--transition-base);
}

.advanced-toggle:hover {
    background: var(--gray-100);
    border-color: var(--primary-blue-light);
}

.advanced-toggle.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.advanced-toggle .toggle-icon {
    transition: transform var(--transition-base);
}

.advanced-toggle.active .toggle-icon {
    transform: rotate(180deg);
}

.advanced-options-content {
    max-height: 0;
    transition: max-height var(--transition-slow);
    background: white;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    overflow: hidden;
}

.advanced-options-content.open {
    max-height: 800px;
    border: 2px solid var(--gray-200);
    border-top: none;
    margin-top: -8px;
    position: relative;
    z-index: 5;
}

.advanced-results {
    margin-top: 25px;
    padding: 20px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-blue-light);
    position: relative;
    z-index: 10;
}

.advanced-results h4 {
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-size: 1rem;
}

.advanced-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.advanced-result-item {
    text-align: center;
    padding: 15px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.advanced-result-item .result-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.advanced-result-item .result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
}

/* ===== MOBILE STICKY CTA BUTTON ===== */
.mobile-sticky-cta {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    border: none;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 700;
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.4);
    cursor: pointer;
    z-index: 999;
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-sticky-cta.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mobile-sticky-cta.hide {
    transform: translateX(-50%) translateY(100px);
}

.mobile-sticky-cta:active {
    transform: translateX(-50%) translateY(0) scale(0.95);
}

/* Only show on mobile */
@media (min-width: 769px) {
    .mobile-sticky-cta {
        display: none;
    }
}

/* ===== TOOLTIPS ===== */
.help-tooltip,
.inline-tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: var(--info);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: help;
    margin-left: 6px;
    position: relative;
    transition: all var(--transition-fast);
}

.help-tooltip:hover,
.inline-tooltip:hover,
.help-tooltip:focus,
.inline-tooltip:focus {
    background: var(--primary-blue);
    transform: scale(1.1);
}

.help-tooltip[data-tooltip]::after,
.inline-tooltip[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) scale(0);
    background: var(--gray-900);
    color: white;
    padding: 10px 15px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    white-space: normal;
    width: max-content;
    max-width: 280px;
    z-index: 100;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all var(--transition-base);
    pointer-events: none;
    line-height: 1.5;
    font-weight: 400;
}

.help-tooltip[data-tooltip]::before,
.inline-tooltip[data-tooltip]::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) scale(0);
    border: 7px solid transparent;
    border-top-color: var(--gray-900);
    opacity: 0;
    transition: all var(--transition-base);
}

.help-tooltip:hover::after,
.inline-tooltip:hover::after,
.help-tooltip:focus::after,
.inline-tooltip:focus::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

.help-tooltip:hover::before,
.inline-tooltip:hover::before,
.help-tooltip:focus::before,
.inline-tooltip:focus::before {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* ===== NOTIFICATION TOASTS ===== */
.notification-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    color: var(--text-primary);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    min-width: 300px;
    max-width: 400px;
    opacity: 0;
    transform: translateX(400px);
    transition: all var(--transition-base);
    border-left: 4px solid var(--info);
    font-size: 0.95rem;
}

.notification-toast.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-toast.notification-success {
    border-left-color: var(--success);
}

.notification-toast.notification-error {
    border-left-color: var(--error);
}

.notification-toast.notification-info {
    border-left-color: var(--info);
}

/* ===== ACTION BUTTONS (SHARE/PDF) ===== */
.share-actions,
.action-buttons {
    display: flex;
    gap: 10px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-primary);
    min-height: 44px;
}

/* Copy Link button - Blue theme */
.copy-link-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border-color: #3b82f6;
}

.copy-link-btn:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    border-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* Save as PDF button - Green theme */
.save-pdf-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-color: #10b981;
}

.save-pdf-btn:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    border-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

/* Clear button - Subtle red/gray theme */
.clear-btn {
    background: white;
    color: #ef4444;
    border-color: #fca5a5;
}

.clear-btn:hover {
    background: #fef2f2;
    border-color: #ef4444;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

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

.action-btn svg {
    width: 18px;
    height: 18px;
}

/* ===== SUCCESS ANIMATIONS ===== */
.success-checkmark {
    position: fixed;
    width: 52px;
    height: 52px;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 9999;
}

.success-checkmark.animate {
    opacity: 1;
    transform: scale(1);
}

.checkmark-circle {
    stroke: var(--success);
    stroke-width: 3;
    fill: white;
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
    stroke: var(--success);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.3s forwards;
}

@keyframes stroke {
    100% {
        stroke-dashoffset: 0;
    }
}

.success-flash {
    animation: greenFlash 0.6s ease-out;
}

@keyframes greenFlash {
    0%, 100% {
        border-color: var(--gray-200);
    }
    50% {
        border-color: var(--success);
        box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    }
}

.success-inline {
    display: inline-block;
    margin-left: 10px;
    padding: 4px 10px;
    background: var(--success);
    color: white;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.success-inline.fade-out {
    opacity: 0;
}

/* ===== LOADING STATES ===== */
.loading-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ===== PRINT STYLES FOR PDF EXPORT ===== */
@media print {
    .print-hidden,
    header,
    nav,
    footer,
    .action-buttons,
    .share-actions,
    .cta-button,
    .mobile-sticky-cta,
    .notification-toast,
    .advanced-toggle {
        display: none !important;
    }

    .print-only {
        display: block !important;
    }

    body {
        margin: 0;
        padding: 20px;
    }

    .calculator-card,
    .results {
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .amortization-chart {
        break-inside: avoid;
        page-break-inside: avoid;
        height: 250px !important;
        min-height: 250px;
        display: flex !important;
    }

    /* CRITICAL FIX: Ensure chart bars render in PDF
       Heights are set via JavaScript inline styles in preparePrint() */
    .chart-bar-container {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: flex-end !important;
    }

    .chart-bar-wrapper {
        /* Heights are set inline by preparePrint() */
        display: flex !important;
        flex-direction: column-reverse !important;
        min-height: 20px !important;
    }

    .chart-bar-segment {
        /* Heights are set inline by preparePrint() */
        width: 100% !important;
        min-height: 5px !important;
    }

    .chart-bar-segment.principal {
        background: linear-gradient(180deg, #007dba 0%, #3b82f6 100%) !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .chart-bar-segment.interest {
        background: linear-gradient(180deg, #f87171 0%, #dc2626 100%) !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .chart-bar-tooltip {
        display: none !important; /* Hide tooltips in PDF */
    }

    @page {
        margin: 1.5cm;
    }
}

.print-only {
    display: none;
}

.print-header {
    text-align: center;
    padding: 20px 0;
    border-bottom: 3px solid var(--primary-blue);
    margin-bottom: 30px;
}

.print-header h3 {
    color: var(--primary-blue);
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.print-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 5px 0;
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 768px) {
    .amortization-chart {
        height: 200px;
        padding: 15px 5px;
    }

    .chart-bar-container {
        max-width: 50px;
    }

    .chart-bar-label {
        font-size: 0.7rem;
    }

    .chart-bar-tooltip {
        font-size: 0.75rem;
        padding: 8px 12px;
    }

    .amortization-legend {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }

    .advanced-result-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .action-buttons,
    .share-actions {
        flex-direction: column;
    }

    .action-btn {
        width: 100%;
        justify-content: center;
    }

    .notification-toast {
        right: 10px;
        left: 10px;
        min-width: auto;
        max-width: none;
    }

    .help-tooltip[data-tooltip]::after,
    .inline-tooltip[data-tooltip]::after {
        max-width: 200px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .amortization-visualization {
        padding: 15px;
    }

    .amortization-chart {
        height: 180px;
        padding: 10px 3px;
    }

    .chart-bar-container {
        max-width: 40px;
    }

    .mobile-sticky-cta {
        padding: 14px 30px;
        font-size: 0.95rem;
        bottom: 15px;
    }

    .advanced-toggle {
        padding: 12px 15px;
        font-size: 0.95rem;
    }

    .advanced-options-content.open {
        padding: 20px 15px;
    }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
.action-btn:focus-visible,
.advanced-toggle:focus-visible,
.help-tooltip:focus-visible,
.inline-tooltip:focus-visible,
.mobile-sticky-cta:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .chart-bar-segment.principal,
    .chart-bar-segment.interest {
        background: currentColor;
    }

    .action-btn {
        border-width: 3px;
    }
}