@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary-blue: #1b2895;
    --active-blue: #141e70;
    --bg-light: #f4f7fa;
    --white: #ffffff;
    --border-color: #e0e6ed;
    --text-dark: #333333;
    --text-muted: #666666;
    --progress-bg: #e9ecef;
    --accent-blue: #1b2895;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.progress-steps {
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress-bar {
    width: 100px;
    height: 6px;
    background: var(--progress-bg);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--primary-blue);
    width: 50%;
    /* Step 1/2 */
}

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

/* Dashboard Layout */
.dashboard {
    display: flex;
    flex: 1;
}

/* Sidebar */
aside.category-sidebar {
    width: 280px;
    background: var(--white);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem 0;
    overflow-y: auto;
}

.category-list {
    list-style: none;
}

.category-item {
    padding: 12px 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 4px solid transparent;
}

.category-item:hover {
    background: #f8f9fa;
    color: var(--accent-blue);
}

.category-item.active {
    background: #f0f7ff;
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
}

.category-item i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    color: #8c9eb0;
    transition: color 0.2s;
}

.category-item.active i {
    color: var(--accent-blue);
}

/* Main Content Area */
main.load-requirement-area {
    flex: 1;
    padding: 2rem;
}

@media (max-width: 991.98px) {
    main.load-requirement-area {

        padding: 5px;
    }
}


.section-title h2 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
}

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

/* Appliance Row */
.appliance-row {
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
    border: 1px solid var(--border-color);
}

.appliance-info .name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary-blue);
}

.appliance-info .wattage {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    background: #f8f9fa;
    padding: 5px 15px;
    border-radius: 20px;
}

.qty-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-muted);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.qty-btn:hover {
    color: var(--accent-blue);
}

.qty-input {
    width: 30px;
    border: none;
    background: transparent;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    -moz-appearance: textfield;
    appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Footer Bottom Bar */
.footer-action-bar {
    background: var(--white);
    padding: 1.5rem 3rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    bottom: 0;
    z-index: 100;
}

.load-feedback {
    display: flex;
    gap: 40px;
}

.feedback-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.feedback-item .value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.feedback-item .value.total-load-val {
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 2px;
}

.btn-next {
    background: #f0f0f0;
    color: #a0a0a0;
    border: none;
    padding: 12px 40px;
    border-radius: 4px;
    font-weight: 600;
    cursor: not-allowed;
    transition: all 0.3s;
}

.btn-next.enabled {
    background: var(--primary-blue);
    color: var(--white);
    cursor: pointer;
}

.btn-next.enabled:hover {
    background: var(--active-blue);
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }

    aside.category-sidebar {
        width: 100%;
        height: auto;
        overflow-x: auto;
        padding: 0.5rem;
    }

    .category-list {
        display: flex;
    }

    .category-item {
        white-space: nowrap;
        padding: 8px 16px;
        border-left: none;
        border-bottom: 3px solid transparent;
    }

    .category-item.active {
        border-bottom-color: var(--accent-blue);
    }

    .appliance-grid {
        grid-template-columns: 1fr;
    }

    .footer-action-bar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .load-feedback {
        width: 100%;
        justify-content: space-between;
    }
}

/* Battery Recommendation Styles */
.battery-type-toggle {
    display: flex;
    background: #e9ecef;
    padding: 4px;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.toggle-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border-radius: 6px;
    color: var(--text-muted);
    transition: all 0.2s;
}

.toggle-btn.active {
    background: var(--white);
    color: var(--primary-blue);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.battery-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.battery-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    text-align: left;
}

.battery-card:hover {
    border-color: var(--accent-blue);
    background: #fcfdfe;
}

.battery-card.active {
    border-color: var(--accent-blue);
    background: #f0f7ff;
    box-shadow: 0 0 0 1px var(--accent-blue);
}

.radio-indicator {
    width: 20px;
    height: 20px;
    border: 2px solid #cbd5e0;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
}

.battery-card.active .radio-indicator {
    border-color: var(--accent-blue);
}

.battery-card.active .radio-indicator::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--accent-blue);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.battery-details {
    display: flex;
    flex-direction: column;
}

.battery-card .type-label {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 0.95rem;
}

.battery-card .cap-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

@media (max-width: 600px) {
    .battery-options-grid {
        grid-template-columns: 1fr;
    }
}

/* Top Action Bar (moved from footer) */
.top-action-bar {
    background: var(--white);
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 768px) {
    .top-action-bar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
}