/* Smart AC Bill Calculator - Main Styles */
:root {
    /* Light Theme Variables */
    --sacb-primary-color: #2563eb;
    --sacb-secondary-color: #3b82f6;
    --sacb-accent-color: #1d4ed8;
    --sacb-bg-color: #f8fafc;
    --sacb-card-bg: #ffffff;
    --sacb-text-color: #1e293b;
    --sacb-border-color: #e2e8f0;
    --sacb-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sacb-radius: 12px;
    --sacb-transition: all 0.3s ease;
}

.sacb-dark-mode {
    /* Dark Theme Variables */
    --sacb-primary-color: #3b82f6;
    --sacb-secondary-color: #60a5fa;
    --sacb-accent-color: #93c5fd;
    --sacb-bg-color: #0f172a;
    --sacb-card-bg: #1e293b;
    --sacb-text-color: #f1f5f9;
    --sacb-border-color: #334155;
    --sacb-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

/* Reset and Base Styles */
.sacb-calculator-wrapper * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.sacb-calculator-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--sacb-bg-color);
    color: var(--sacb-text-color);
    line-height: 1.6;
    padding: 20px;
    transition: var(--sacb-transition);
    min-height: 100vh;
}

/* Header Styles */
.sacb-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background: linear-gradient(135deg, var(--sacb-primary-color), var(--sacb-secondary-color));
    border-radius: var(--sacb-radius);
    color: white;
    box-shadow: var(--sacb-shadow);
}

.sacb-header h2 {
    font-size: 2.2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.sacb-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Container Layout */
.sacb-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Card Styles */
.sacb-card {
    background: var(--sacb-card-bg);
    border-radius: var(--sacb-radius);
    padding: 25px;
    box-shadow: var(--sacb-shadow);
    border: 1px solid var(--sacb-border-color);
    transition: var(--sacb-transition);
    margin-bottom: 20px;
}

.sacb-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.sacb-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--sacb-primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--sacb-border-color);
}

/* Input Section */
.sacb-input-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

/* Form Elements */
.sacb-form-group {
    margin-bottom: 25px;
}

.sacb-form-group label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--sacb-text-color);
    gap: 10px;
}

.sacb-icon {
    font-size: 1.2em;
    line-height: 1;
}

.sacb-value-display {
    background: var(--sacb-primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.sacb-select,
.sacb-input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--sacb-border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--sacb-transition);
    background: var(--sacb-card-bg);
    color: var(--sacb-text-color);
}

.sacb-select:focus,
.sacb-input:focus {
    outline: none;
    border-color: var(--sacb-primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Slider Styles */
.sacb-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--sacb-border-color);
    outline: none;
    -webkit-appearance: none;
}

.sacb-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--sacb-primary-color);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.sacb-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--sacb-primary-color);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.sacb-slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.85rem;
    color: #64748b;
}

/* Hidden Element */
.sacb-hidden {
    display: none !important;
}

/* Action Buttons */
.sacb-action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.sacb-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--sacb-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 180px;
}

.sacb-btn-primary {
    background: linear-gradient(135deg, var(--sacb-primary-color), var(--sacb-secondary-color));
    color: white;
}

.sacb-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
}

.sacb-btn-secondary {
    background: var(--sacb-card-bg);
    color: var(--sacb-text-color);
    border: 2px solid var(--sacb-border-color);
}

.sacb-btn-secondary:hover {
    border-color: var(--sacb-primary-color);
    transform: translateY(-2px);
}

/* Results Section */
.sacb-results-section {
    margin: 40px 0;
}

.sacb-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.sacb-result-item {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.05));
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--sacb-transition);
    border: 1px solid var(--sacb-border-color);
}

.sacb-result-item:hover {
    transform: translateX(5px);
    border-color: var(--sacb-primary-color);
}

.sacb-result-icon {
    font-size: 2rem;
    background: var(--sacb-primary-color);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sacb-result-content {
    flex: 1;
}

.sacb-result-label {
    display: block;
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 5px;
}

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

.sacb-result-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    padding-top: 25px;
    border-top: 2px solid var(--sacb-border-color);
}

/* Info Section */
.sacb-info-section {
    margin-top: 40px;
}

.sacb-tips {
    list-style: none;
}

.sacb-tips li {
    padding: 12px 0;
    border-bottom: 1px solid var(--sacb-border-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.sacb-tips li:last-child {
    border-bottom: none;
}

/* Footer */
.sacb-footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px solid var(--sacb-border-color);
    color: #64748b;
    font-size: 0.9rem;
}

.sacb-credit {
    margin-top: 10px;
    color: var(--sacb-primary-color);
    font-weight: 600;
}

/* Animations */
@keyframes sacbFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sacb-results-card {
    animation: sacbFadeIn 0.6s ease-out;
}

/* Loading State */
.sacb-loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.sacb-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid var(--sacb-border-color);
    border-top-color: var(--sacb-primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .sacb-header h2 {
        font-size: 1.8rem;
    }
    
    .sacb-input-section {
        grid-template-columns: 1fr;
    }
    
    .sacb-results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sacb-action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .sacb-btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .sacb-calculator-wrapper {
        padding: 15px;
    }
    
    .sacb-results-grid {
        grid-template-columns: 1fr;
    }
    
    .sacb-card {
        padding: 20px 15px;
    }
    
    .sacb-header h2 {
        font-size: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .sacb-action-buttons,
    .sacb-info-section,
    .sacb-footer,
    .sacb-result-actions {
        display: none !important;
    }
    
    .sacb-card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
    
    .sacb-result-item {
        break-inside: avoid;
    }
}