/* E-Bike Range Calculator Styles */
.ebike-calculator-container {
    max-width: 1200px;
    margin: 0 auto;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f7f7f7 0%, #f1f1f1 100%);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.ebike-calculator-container.dark {
    background: linear-gradient(135deg, #000000c2 0%, #000000de 100%);
    color: #999;
}

/* Header */
.calculator-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 10;
}

.dark .calculator-header {
    background: rgba(0, 0, 0, 0);
    border-bottom-color: #3d3d3d;
}

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

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

/* FIXED: Icon styling for Unicode symbols */
.battery-icon, .vehicle-icon, .section-icon, .detail-icon {
    font-size: 1.5rem;
    display: inline-block;
}

.vehicle-selector {
    display: flex;
    gap: 0.5rem;
}

.vehicle-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 12px;
    background: transparent;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
}

.vehicle-btn:hover {
    background: #f1f5f9;
    color: #334155;
}

.vehicle-btn.active {
    background: #7cbc29;
    color: white;
}

.dark .vehicle-btn:hover {
    background: #7fd113;
    color: #f1f1f1;
}

.theme-toggle button {
    padding: 0.5rem;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.2rem;
}

.theme-toggle button:hover {
    background: #f1f5f9;
    color: #334155;
}

.dark .theme-toggle button:hover {
    background: #334155;
    color: #f1f5f9;
}

/* FIXED: Theme icon display */
.dark .sun-icon {
    display: none;
}

.moon-icon {
    display: none;
}

.dark .moon-icon {
    display: inline-block;
}

.sun-icon {
    display: inline-block;
}

/* Main Calculator */
.calculator-main {
    padding: 2rem;
}

.calculator-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 2rem;
    text-align: center;
}

.dark .calculator-title {
    color: #f1f5f9;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-main {
        padding: 1rem;
    }
    
    .calculator-header {
        padding: 1rem;
    }
}

/* Visualization Panel */
.visualization-panel {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
}

.dark .visualization-panel {
    background: rgba(0, 0, 0, 0);
  border-color: #3a3a3a;
}

.range-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.battery-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    
}

.battery-level {
    font-size: 1.125rem;
    font-weight: 700;
    color: #7cbc29;
}

.range-value {
    font-size: 3rem;
    font-weight: 700;
    color: #1e293b;
}

.dark .range-value {
    color: #f1f1f1;
}

.range-unit {
    font-size: 2rem;
    color: #7cbc29;
    font-weight: normal;
}

.range-label {
    color: #666;
    margin: 0;
    font-weight: normal;
}

.speed-display {
    display: flex;
    align-items: center;
    justify-content: center;
}

.speed-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid #eee;
    background: linear-gradient(135deg, #f6f6f6 0%, #f4ffec 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.dark .speed-circle {
    border-color: #1f3d10;
    background: linear-gradient(135deg, #1b271382 0%, #1c3217 100%);
}

.speed-circle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, rgba(34, 197, 94, 0.2), transparent);
}

.speed-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.1;
    color: #7cbc29;
    z-index: 1;
}

.speed-unit {
    font-size: 0.875rem;
    color: #999;
    z-index: 1;
    font-weight: normal;
}
.dark .speed-unit {
    color: #f1f1f1;
}

/* Range Gauge */
.range-gauge {
    margin: 1rem 0;
}

.gauge-track {
    height: 12px;
    background: #e2e8f0;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.dark .gauge-track {
    background: rgba(61, 61, 61, 0.5);
}

.gauge-fill {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 6px;
    width: 0%;
    transition: width 1s ease-out;
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

.gauge-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: #666;
    font-weight: normal;
}

/* Mode Comparison */
.mode-comparison, .motor-comparison {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

.motor-comparison {
    grid-template-columns: repeat(2, 1fr);
}

.mode-card {
    background: #f2f3f4;
    border-radius: 16px;
    padding: 1rem;
    text-align: center;
    border: 1px solid #dadada;
    transition: all 0.3s ease;
    cursor: pointer;
    opacity: 0.5;
}

.dark .mode-card {
    background: rgba(61, 61, 61, 0.4);
    border-color: #3a3a3a;
}

.mode-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.mode-card.active {
    border-color: #7cbc29;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
    opacity: 1;
}

.mode-range {
    font-size: 1.25rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.25rem;
}

.dark .mode-range {
    color: #f1f1f1;
}

.mode-range span {
    font-size: 0.875rem;
    color: #999;
}

.mode-label {
    font-size: 0.75rem;
    color: #999;
    font-weight: 600;
}

/* Range Details */
.range-details {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid #dadada;
    margin-top: 2rem;
}

.dark .range-details {
    background: rgba(61, 61, 61, 0.4);
    border-color: #3a3a3a;
}

.range-details h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
}

.dark .range-details h4 {
    color: #666;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: #f2f3f4;
    border-radius: 12px;
    border: 1px solid #dadada;
}

.dark .detail-item {
    background: rgba(61, 61, 61, 0.4);
    border-color: #3a3a3a;
}

.detail-label {
    font-size: 0.875rem;
    color: #666;
    font-weight: normal;
}

.detail-value {
    font-weight: 600;
    color: #1e293b;
}

.dark .detail-value {
    color: #f1f5f9;
}

/* Controls Panel */
.controls-panel {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
    height: fit-content;
}

.dark .controls-panel {
    background: rgba(0, 0, 0, 0);
    border-color: #3a3a3a;
}

.control-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.dark .control-section {
    border-bottom-color: #333;
}

.control-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.225rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1.4rem;
}

.dark .section-title {
    color: #999;
}

.control-group {
    margin-bottom: 1.1rem;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: normal;
    color: #374151;
    margin-bottom: 0.5rem;
}

.dark .control-group label {
    color: #666;
}

/* Assistance Buttons */
.assistance-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.assistance-btn {
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 12px;
    background: #f1f5f9;
    color: #64748b;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dark .assistance-btn {
    background: rgba(61, 61, 61, 0.5);
    color: #d1d5db;
}

.assistance-btn:hover {
    background: #e2e8f0;
    color: #334155;
}

.dark .assistance-btn:hover {
    background: #395533;
    color: #f1f5f9;
}

.assistance-btn.active {
    background: #7cbc29;
    color: white;
    box-shadow: 0 0 20px rgba(100, 197, 34, 0.35);
}

.assistance-btn[data-level="eco"].active {
    background: #7cbc29;
}

.assistance-btn[data-level="tour"].active {
    background: #3b82f6;
}

.assistance-btn[data-level="turbo"].active {
    background: #ef4444; 
}

.help-text {
    font-size: 0.75rem;
    color: #666;
    margin: 0;
    font-weight: normal;
}

/* Form Controls */
select, input[type="number"] {
    width: 100%;
    padding: 6px 18px;
    border: 1px solid #d1d5db;
    border-radius: 22px;
    background: #f9fafb;
    color: #1f2937;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.dark select, .dark input[type="number"] {
    background: rgba(61, 61, 61, 0.5);
    border-color: #3a3a3a;
    color: #f1f1f1;
}

select:focus, input[type="number"]:focus {
    outline: none;
    border-color: #7cbc29;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.custom-input {
    margin-top: 0.5rem;
}

.battery-capacity, .total-power-display {
    background: #f1f5f900;
    border-radius: 12px;
    padding: 0rem 1rem 1rem 0rem;
    margin-top: -1rem;
}

.dark .battery-capacity, .dark .total-power-display {
    background: rgba(61, 61, 61, 0);
    border-color: #3a3a3a00;
}

.capacity-value, .total-power-value {
    font-weight: 600;
    color: #1e293b;
    font-size: 1.125rem;
}

.dark .capacity-value, .dark .total-power-value {
    color: #f1f1f1;
}

/* Sliders */
.slider-container {
    position: relative;
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}

.slider-container input[type="range"] {
    width: 100%;
    height: 9px;
    border-radius: 5px;
    background: #e2e8f0;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.dark .slider-container input[type="range"] {
    background: rgba(65, 65, 65, 0);
    overflow: hidden;
    margin: 0;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #7cbc29;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
    transition: all 0.2s ease;
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.5);
}

.slider-container input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #7cbc29;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

.slider-value {
    position: absolute;
    top: -1.6rem;
    right: 0;
    background: #1e293b;
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.dark .slider-value {
    background: #f1f5f9;
    color: #1e293b;
}

/* Loading Indicator */
.loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.dark .loading-indicator {
    background: rgba(61, 61, 61, 0.95);
    color: #f1f1f1;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-top: 2px solid #22c55e;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .mode-comparison, .motor-comparison {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .range-display {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .assistance-buttons {
        grid-template-columns: 1fr;
    }
    
    .vehicle-selector {
        flex-direction: column;
        width: 100%;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Utility Classes */
.escooter-only {
    display: none;
}

.ebike-calculator-container[data-vehicle-type="escooter"] .escooter-only {
    display: grid;
}

.ebike-calculator-container[data-vehicle-type="escooter"] .ebike-only {
    display: none;
}

.ebike-calculator-container[data-vehicle-type="escooter"] .escooter-controls {
    display: block !important;
}

.ebike-calculator-container[data-vehicle-type="escooter"] .ebike-controls {
    display: none !important;
}