/*
 * FlexiCalc Pro - Mortgage & Loan Calculator Stylesheet
 * Fully responsive, glassmorphic layout supporting dark/light modes and advanced tabs.
 */

/* Theme Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --accent-color: #a855f7;
    --accent-dark: #9333ea;
    --success-color: #10b981;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Dark Theme Variables */
.flexicalc-widget-container.dark-theme,
.flexicalc-widget-container.dark-theme ~ * {
    --bg-app: #0b0f19;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-input: #1f2937;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
    --slider-track: #374151;
    --card-accent-border: rgba(99, 102, 241, 0.2);
    --header-bg: rgba(11, 15, 25, 0.8);
    --tab-inactive: #4b5563;
}

/* Light Theme Variables */
.flexicalc-widget-container.light-theme,
.flexicalc-widget-container.light-theme ~ * {
    --bg-app: #f3f4f6;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-input: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 45px -15px rgba(99, 102, 241, 0.15);
    --slider-track: #e5e7eb;
    --card-accent-border: rgba(99, 102, 241, 0.1);
    --header-bg: rgba(243, 244, 246, 0.8);
    --tab-inactive: #9ca3af;
}

/* Base resets inside the widget container */
.flexicalc-widget-container {
    font-family: var(--font-family);
    background-color: var(--bg-app);
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    width: 100%;
    padding: 24px;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    box-sizing: border-box;
}

.flexicalc-widget-container * {
    box-sizing: border-box;
}

/* Header styling */
.flexicalc-widget-container .app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-main);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
}

.brand h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

.badge {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 9999px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.controls-header {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Select element styling */
.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

#currencySelector {
    appearance: none;
    -webkit-appearance: none;
    font-family: var(--font-family);
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 36px 8px 16px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#currencySelector:focus {
    outline: none;
    border-color: var(--primary-color);
}

.select-icon {
    position: absolute;
    right: 12px;
    pointer-events: none;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

/* Theme Toggle btn */
.icon-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.dark-theme .moon-icon {
    display: none;
}

.light-theme .sun-icon {
    display: none;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 900px) {
    .dashboard-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

/* Card Styling */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-main);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
    border-color: var(--card-accent-border);
    box-shadow: var(--shadow-hover);
}

.card-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.015em;
}

.card-header.centered {
    text-align: center;
}

/* Tab Navigation inside the Input Card */
.tabs-nav {
    display: flex;
    background: rgba(156, 163, 175, 0.05);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 28px;
    gap: 4px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 10px;
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--tab-inactive);
    cursor: pointer;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    background: var(--bg-input);
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.tab-description {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Input group layouts */
.input-group {
    margin-bottom: 24px;
}

.input-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.input-header label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-prefix-wrapper,
.input-suffix-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix-wrapper input,
.input-suffix-wrapper input {
    font-family: var(--font-family);
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.05rem;
    width: 140px;
    text-align: right;
    transition: all var(--transition-fast);
}

.input-prefix-wrapper input:focus,
.input-suffix-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.currency-prefix,
.percent-suffix,
.years-suffix {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    position: absolute;
    pointer-events: none;
}

.currency-prefix {
    left: 12px;
}

.input-prefix-wrapper input {
    padding-left: 28px;
}

.percent-suffix,
.years-suffix {
    right: 12px;
}

.input-suffix-wrapper input {
    padding-right: 32px;
}

.down-payment-inputs {
    display: flex;
    gap: 12px;
}

.down-payment-inputs .input-prefix-wrapper input,
.down-payment-inputs .input-suffix-wrapper input {
    width: 110px;
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 480px) {
    .grid-2-col {
        grid-template-columns: 1fr 1fr;
    }
}

/* Custom Range Sliders */
.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 9999px;
    background: var(--slider-track);
    outline: none;
    margin-top: 14px;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.4);
    transition: transform var(--transition-fast);
    border: 2px solid var(--bg-card);
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

.range-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.4);
    border: 2px solid var(--bg-card);
}

.range-slider::-moz-range-thumb:hover {
    transform: scale(1.25);
}

/* Collapsible PITI vars styling */
.piti-variables-container {
    border-top: 1px solid var(--border-color);
    padding-top: 18px;
    margin-top: 24px;
}

.variable-toggle-btn {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    border: none;
    color: var(--primary-color);
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0;
}

.chevron-piti {
    transition: transform var(--transition-normal);
}

.variable-toggle-btn[aria-expanded="true"] .chevron-piti {
    transform: rotate(180deg);
}

.piti-vars-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.variable-toggle-btn[aria-expanded="true"] + .piti-vars-content {
    max-height: 250px;
}

.grid-3-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    padding-top: 16px;
}

@media (min-width: 480px) {
    .grid-3-col {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.grid-3-col .input-group {
    margin-bottom: 0;
}

.grid-3-col label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
}

.grid-3-col input {
    width: 100% !important;
}

/* Results Card styling */
.monthly-payment-display {
    margin: 12px 0 20px 0;
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    justify-content: center;
    align-items: baseline;
}

.monthly-payment-display .currency-symbol {
    font-size: 1.8rem;
    font-weight: 700;
    margin-right: 4px;
}

.monthly-payment-display .period {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-left: 6px;
    -webkit-text-fill-color: var(--text-secondary);
}

/* PITI breakdown Stack */
.piti-breakdown-stack {
    background: rgba(156, 163, 175, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-color);
}

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

.breakdown-row .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.breakdown-row .val {
    font-weight: 700;
}

/* Savings Alert Card */
.savings-alert-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 24px;
}

.savings-icon {
    color: var(--success-color);
    display: flex;
    align-items: center;
}

.savings-info h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 2px 0;
    color: var(--success-color);
}

.savings-info p {
    font-size: 0.85rem;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.4;
}

.green-text {
    color: var(--success-color);
    font-weight: 700;
}

/* Summary Grid Mini Cards */
.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
    margin-bottom: 32px;
}

.summary-mini-card {
    background: rgba(156, 163, 175, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 8px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.summary-mini-card .label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.summary-mini-card .value {
    font-size: 1.05rem;
    font-weight: 700;
}

.summary-mini-card .value.accent-color {
    color: var(--accent-color);
}

/* Chart Container & Label Overlay */
.chart-container {
    position: relative;
    height: 220px;
    margin: 0 auto 32px auto;
    width: 220px;
}

.chart-center-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    pointer-events: none;
}

.chart-center-label .title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.chart-center-label .ratio {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
}

.chart-center-label .desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Actions Button */
.card-actions {
    display: flex;
    justify-content: center;
}

.primary-btn {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: #ffffff;
    border: none;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    background: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
}

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

/* Accordion Component */
.amortization-card {
    padding: 0;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 24px 32px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 1.1rem;
    transition: background-color var(--transition-fast);
}

.accordion-header:hover {
    background-color: rgba(156, 163, 175, 0.03);
}

.title-with-icon {
    display: flex;
    align-items: center;
    gap: 12px;
}

.table-icon {
    color: var(--primary-color);
}

.chevron-icon {
    transition: transform var(--transition-normal);
    color: var(--text-secondary);
}

/* Open accordion states */
.accordion-header[aria-expanded="true"] .chevron-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-header[aria-expanded="true"] + .accordion-content {
    max-height: 1000px;
}

/* Responsive Table */
.table-responsive {
    overflow-x: auto;
    padding: 0 32px 32px 32px;
}

.amortization-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.amortization-table th,
.amortization-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
}

.amortization-table th {
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    background: rgba(156, 163, 175, 0.02);
}

.amortization-table tbody tr:hover {
    background-color: rgba(156, 163, 175, 0.02);
}

.amortization-table td {
    color: var(--text-primary);
    font-weight: 500;
}

.amortization-table tbody tr:last-child td {
    border-bottom: none;
}

/* App Footer */
.app-footer {
    text-align: center;
    padding: 32px 0 16px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Hide webkit arrows on numeric inputs */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type=number] {
    -moz-appearance: textfield;
}

/* PDF Export Visual Helper */
.pdf-rendering {
    background-color: #0b0f19 !important;
    color: #ffffff !important;
    padding: 40px !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}
.pdf-rendering .primary-btn {
    display: none !important;
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    .flexicalc-widget-container {
        padding: 16px;
        gap: 16px;
    }
    
    .app-header {
        padding: 12px 16px;
        border-radius: 12px;
    }
    
    .card {
        padding: 24px;
        border-radius: 16px;
    }
    
    .accordion-header {
        padding: 20px 24px;
    }
    
    .table-responsive {
        padding: 0 24px 24px 24px;
    }
}

@media (max-width: 580px) {
    .flexicalc-widget-container .app-header {
        flex-direction: column;
        gap: 16px;
        align-items: center;
        text-align: center;
    }
    
    .controls-header {
        width: 100%;
        justify-content: center;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .down-payment-inputs {
        flex-direction: column;
        gap: 8px;
    }
    
    .down-payment-inputs .input-prefix-wrapper,
    .down-payment-inputs .input-suffix-wrapper {
        width: 100%;
    }
    
    .down-payment-inputs .input-prefix-wrapper input,
    .down-payment-inputs .input-suffix-wrapper input {
        width: 100% !important;
    }
}

@media (max-width: 480px) {
    .flexicalc-widget-container {
        padding: 12px;
        gap: 12px;
    }
    
    .card {
        padding: 16px;
        border-radius: 12px;
    }
    
    .monthly-payment-display {
        font-size: 2.1rem;
    }
    
    .monthly-payment-display .currency-symbol {
        font-size: 1.4rem;
    }
    
    .input-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    
    .input-prefix-wrapper,
    .input-suffix-wrapper {
        width: 100%;
    }
    
    .input-prefix-wrapper input,
    .input-suffix-wrapper input {
        width: 100% !important;
        text-align: left;
        padding-left: 28px;
    }
    
    .percent-suffix,
    .years-suffix {
        right: 12px;
    }
    
    .chart-container {
        width: 180px;
        height: 180px;
    }
    
    .chart-center-label .ratio {
        font-size: 1.3rem;
    }
    
    .accordion-header {
        padding: 16px;
        font-size: 0.95rem;
    }
    
    .table-responsive {
        padding: 0 16px 16px 16px;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}