:root {
    --bg-main: #060b13;
    --bg-card: rgba(10, 20, 38, 0.7);
    --bg-card-hover: rgba(18, 32, 57, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(16, 185, 129, 0.5);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --primary: #10b981; /* Sustainable Emerald Green */
    --primary-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%); /* Green to Cyan Tech */
    --secondary-gradient: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%); /* Cyan to Tech Blue */
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); /* High-tech Cyan Accent */
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    
    --glow-primary: rgba(16, 185, 129, 0.25);
    --glow-secondary: rgba(6, 182, 212, 0.25);
    
    --font-sans: 'Outfit', 'Noto Sans TC', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}



.bipv-calculator-app {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.calculator-sub-header {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    background: var(--primary-gradient);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    box-shadow: 0 0 15px var(--glow-primary);
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

..calculator-sub-header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toggle-switch-container {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.25rem;
    border-radius: 0.5rem;
    gap: 0.25rem;
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-btn.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(234, 88, 12, 0.25);
}

/* Main Layout */
.app-container {
    display: flex;
    flex: 1;
    position: relative;
}

/* Sidebar Inputs */
.sidebar {
    width: 390px;
    background: rgba(15, 23, 42, 0.4);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    overflow-y: auto;
    height: calc(100vh - 73px);
    position: sticky;
    top: 73px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    border-left: 3px solid var(--primary);
    padding-left: 0.75rem;
    margin-bottom: 0.5rem;
}

.input-group-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition);
}

.input-group-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: var(--bg-card-hover);
}

.input-group-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.control-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.control-label span.value-container {
    color: var(--primary);
    font-weight: 600;
}

.control-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.control-row input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}

.control-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: 0 0 10px var(--glow-primary);
    transition: var(--transition);
}

.control-row input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.control-row input[type="number"] {
    width: 85px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.5rem;
    border-radius: 0.375rem;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    text-align: right;
    outline: none;
    transition: var(--transition);
}

.control-row input[type="number"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 5px var(--glow-primary);
}

.control-field select {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.75rem;
    border-radius: 0.5rem;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
    width: 100%;
}

.control-field select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--glow-primary);
}

/* Custom Location Form */
.custom-region-form {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.custom-region-form h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.form-inputs-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 0.5rem;
}

.form-input-text {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.5rem;
    border-radius: 0.375rem;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    outline: none;
    transition: var(--transition);
}

.form-input-text:focus {
    border-color: var(--primary);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.checkbox-row input[type="checkbox"] {
    accent-color: var(--primary);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.custom-btn {
    background: var(--primary-gradient);
    border: none;
    color: #fff;
    padding: 0.5rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.custom-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--glow-primary);
}

/* Financing Toggle Container styling */
.loan-group-container {
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease-out, margin-top 0.3s ease-out;
    max-height: 500px;
    opacity: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.loan-group-container.hidden {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    margin: 0;
    padding: 0;
}

/* Dashboard Panel */
.dashboard-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    height: calc(100vh - 73px);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* KPI Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.8;
}

.kpi-card.secondary::before {
    background: var(--secondary-gradient);
}

.kpi-card.accent::before {
    background: var(--accent-gradient);
}

.kpi-card.disabled {
    opacity: 0.25;
    filter: grayscale(100%);
    pointer-events: none;
}

.kpi-card.disabled::before {
    background: var(--text-muted);
}

.kpi-card:hover {
    transform: translateY(-4px);
    background: var(--bg-card-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.kpi-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kpi-title i {
    font-size: 1rem;
    opacity: 0.8;
}

.kpi-card.secondary .kpi-title i {
    color: #06b6d4;
}

.kpi-card.accent .kpi-title i {
    color: #10b981;
}

.kpi-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.025em;
    margin: 0.25rem 0;
}

.kpi-footer {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Charts Section */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    height: 420px;
}

.chart-.calculator-sub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-title i {
    color: var(--primary);
}

.chart-wrapper {
    position: relative;
    flex: 1;
    width: 100%;
    height: 100%;
}

/* Environmental impact widgets */
.env-widget-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.env-widget-card {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(5, 150, 105, 0.02) 100%);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition);
}

.env-widget-card:hover {
    border-color: rgba(16, 185, 129, 0.4);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(5, 150, 105, 0.04) 100%);
}

.env-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #10b981;
    font-size: 1.75rem;
}

.env-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.env-info h4 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.env-info p.val {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
}

.env-info p.sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Data Table Card */
.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.table-.calculator-sub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-actions {
    display: flex;
    gap: 0.75rem;
}

.table-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.table-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.table-btn.primary {
    background: var(--primary-gradient);
    border: none;
    color: #fff;
}

.table-btn.primary:hover {
    box-shadow: 0 4px 12px var(--glow-primary);
    transform: translateY(-1px);
}

.table-btn.accent {
    background: var(--accent-gradient);
    border: none;
    color: #fff;
}

.table-btn.accent:hover {
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    transform: translateY(-1px);
}

.table-wrapper {
    overflow-x: auto;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: right;
}

thead {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
}

th {
    padding: 0.85rem 1rem;
    font-weight: 600;
    color: #fff;
    text-align: right;
}

th:first-child, td:first-child {
    text-align: left;
    position: sticky;
    left: 0;
    background: #0f1624; /* Solid color for freeze col */
    z-index: 10;
}

td {
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: #fff;
}

.negative-value {
    color: #f87171;
}

.positive-value {
    color: #34d399;
}

/* Modal style */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-card {
    background: #0f172a;
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-.calculator-sub-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-.bipv-calculator-app {
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Scrollbar styles */
.bipv-calculator-app ::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.bipv-calculator-app ::-webkit-scrollbar-track {
    background: transparent;
}

.bipv-calculator-app ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.bipv-calculator-app ::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Premium Modal Layout & Typography styling */
.modal-section-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.modal-section-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 0.75rem;
}

.modal-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.modal-item-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-item-title::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.modal-formula-box {
    background: rgba(0, 0, 0, 0.35);
    border-left: 3px solid #06b6d4;
    padding: 0.75rem 1rem;
    border-radius: 0 0.5rem 0.5rem 0;
    font-family: 'Outfit', monospace;
    font-size: 0.95rem;
    color: #22d3ee;
    margin: 0.25rem 0;
    line-height: 1.4;
    letter-spacing: 0.025em;
}

.modal-item p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-item em {
    color: #34d399;
    font-style: normal;
    font-weight: 600;
}

.bipv-calculator-app {
    width: 100%;
    background-color: #050a14 !important; /* Force matching CRi website's dark background */
    color: var(--text-primary);
    font-family: var(--font-body), sans-serif;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}