:root {
    --mcat-black: #000000;
    --mcat-gray-900: #111827;
    --mcat-gray-800: #1F2937;
    --mcat-gray-700: #374151;
    --mcat-gray-600: #4B5563;
    --mcat-gray-500: #6B7280;
    --mcat-gray-400: #9CA3AF;
    --mcat-gray-300: #D1D5DB;
    --mcat-gray-200: #E5E7EB;
    --mcat-gray-100: #F3F4F6;
    --mcat-gray-50: #F9FAFB;
    --mcat-white: #FFFFFF;
    --mcat-primary: #3B82F6;
    --mcat-success: #22C55E;
    --mcat-warning: #F59E0B;
    --mcat-danger: #EF4444;
    --mcat-radius: 16px;
    --mcat-radius-sm: 12px;
    --mcat-radius-lg: 20px;
    --mcat-radius-full: 9999px;
}



/* Main Container */
.mcat-main-container {
    max-width: 428px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--mcat-white);
    position: relative;
}

/* Demo Button */
.mcat-open-btn {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--mcat-black);
    color: var(--mcat-white);
    border: none;
    padding: 16px 32px;
    border-radius: var(--mcat-radius-full);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

    .mcat-open-btn:active {
        transform: translate(-50%, -50%) scale(0.95);
    }

/* Category Overlay */
.mcat-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 998;
}

    .mcat-overlay.mcat-active {
        opacity: 1;
        visibility: visible;
    }

/* Category Container */
.mcat-container {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 428px;
    height: 100vh;
    background: var(--mcat-white);
    transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 999999;
    display: flex;
    flex-direction: column;
}

    .mcat-container.mcat-active {
        right: 0;
    }

/* Category Header */
.mcat-header {
    background: var(--brand-color);
    padding: 12px 10px;
    border-bottom: 1px solid var(--mcat-gray-100);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.mcat-back-btn {
    width: 35px;
    height: 35px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

    .mcat-back-btn:active {
        background: var(--mcat-gray-100);
    }

.mcat-header-title {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
    margin: 0;
}

/* Category Body */
.mcat-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Sidebar */
.mcat-sidebar {
    width: 100px;
    background: var(--mcat-gray-50);
    overflow-y: auto;
    padding: 8px 0;
}

.mcat-sidebar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

    .mcat-sidebar-item:active {
        background: var(--mcat-gray-100);
    }

    .mcat-sidebar-item.mcat-active {
        background: var(--mcat-white);
    }

        .mcat-sidebar-item.mcat-active::before {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--brand-dark);
        }

.mcat-sidebar-icon {
    width: 25px;
    height: 25px;
    margin-bottom: 5px;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .mcat-sidebar-icon img {
        width: 24px;
        height: 24px;
        object-fit: contain;
    }

    .mcat-sidebar-icon i {
        font-size: 20px;
    }

.mcat-sidebar-label {
    font-size: 11px;
    color: var(--mcat-gray-600);
    text-align: center;
    line-height: 1.2;
    word-break: break-word;
}

.mcat-sidebar-item.mcat-active .mcat-sidebar-label {
    color: var(--brand-dark);
    font-weight: 600;
}

/* Main Content */
.mcat-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

    .mcat-content.mcat-hidden {
        display: none;
    }

/* Category Section */
.mcat-section {
    margin-bottom: 24px;
    display: none;
}

    .mcat-section.mcat-active {
        display: block;
    }

.mcat-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.mcat-section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--mcat-gray-900);
}

.mcat-section-link {
    font-size: 13px;
    color: var(--mcat-primary);
    text-decoration: none;
}

    .mcat-section-link:hover {
        text-decoration: underline;
    }

/* Sub Categories Grid */
.mcat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

/* Level 2 Category Header */
.mcat-level2-header {
    background: var(--mcat-gray-50);
    padding: 12px;
    border-radius: var(--mcat-radius);
    margin-bottom: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s;
}

    .mcat-level2-header:hover {
        background: var(--mcat-gray-100);
    }

    .mcat-level2-header.mcat-active {
        background: var(--brand-color);
        color: var(--mcat-white);
    }

.mcat-level2-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
}

.mcat-level2-arrow {
    transition: transform 0.3s;
    font-size: 12px;
}

.mcat-level2-header.mcat-active .mcat-level2-arrow {
    transform: rotate(180deg);
}

/* Level 3 Container */
.mcat-level3-container {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    margin-bottom: 16px;
}

    .mcat-level3-container.mcat-active {
        max-height: 500px;
        transition: max-height 0.3s ease-in;
    }

/* Badge in Level 2 */
.mcat-level2-badge {
    background: var(--mcat-danger);
    color: var(--mcat-white);
    font-size: 10px;
    padding: 2px 6px;
    border-radius: var(--mcat-radius-full);
    margin-right: 8px;
}

.mcat-subcat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 11px 4px;
    background: var(--mcat-white);
    border: 1px solid var(--mcat-gray-100);
    border-radius: var(--mcat-radius);
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    text-decoration: none;
    color: inherit;
}

    .mcat-subcat-item:hover {
        background: var(--mcat-gray-50);
        border-color: var(--mcat-primary);
    }

    .mcat-subcat-item:active {
        transform: scale(0.95);
        background: var(--mcat-gray-100);
    }

.mcat-subcat-icon {
    width: 40px;
    height: 40px;
    background: var(--mcat-gray-100);
    border-radius: var(--mcat-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    font-size: 20px;
    overflow: hidden;
}

    .mcat-subcat-icon img {
        width: 24px;
        height: 24px;
        object-fit: contain;
    }

    .mcat-subcat-icon i {
        font-size: 18px;
        color: var(--mcat-gray-600);
    }

.mcat-subcat-name {
    font-size: 11px;
    color: var(--mcat-gray-900);
    line-height: 1.3;
    word-break: break-word;
    font-weight: 500;
}

/* Special Sections */
.mcat-special-section {
    background: var(--mcat-gray-50);
    border-radius: var(--mcat-radius);
    padding: 16px;
    margin-bottom: 16px;
}

.mcat-special-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--mcat-gray-900);
    margin-bottom: 12px;
}

/* Best Badge */
.mcat-best-badge {
    position: absolute;
    top: 4px;
    left: 4px;
    background: var(--mcat-danger);
    color: var(--mcat-white);
    font-size: 9px;
    padding: 2px 6px;
    border-radius: var(--mcat-radius-full);
    font-weight: 600;
}

/* Promotion Banner */
.mcat-promotion {
    background: linear-gradient(135deg, var(--mcat-primary) 0%, #8B5CF6 100%);
    border-radius: var(--mcat-radius);
    padding: 16px;
    margin-bottom: 16px;
    color: var(--mcat-white);
    position: relative;
    overflow: hidden;
}

    .mcat-promotion.mcat-offer {
        background: linear-gradient(135deg, var(--mcat-warning) 0%, #DC2626 100%);
    }

.mcat-promotion-content {
    position: relative;
    z-index: 1;
}

.mcat-promotion-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.mcat-promotion-desc {
    font-size: 13px;
    opacity: 0.9;
}

/* Icon Styles */
.mcat-icon {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

/* Animation Classes */
@keyframes mcatSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.mcat-section.mcat-active > * {
    animation: mcatSlideIn 0.4s ease forwards;
}

/* Scrollbar Styles */
.mcat-sidebar::-webkit-scrollbar,
.mcat-content::-webkit-scrollbar {
    width: 4px;
}

.mcat-sidebar::-webkit-scrollbar-track,
.mcat-content::-webkit-scrollbar-track {
    background: transparent;
}

.mcat-sidebar::-webkit-scrollbar-thumb,
.mcat-content::-webkit-scrollbar-thumb {
    background: var(--mcat-gray-300);
    border-radius: 2px;
}

/* Safe Area */
@supports (padding: max(0px)) {
    .mcat-header {
        padding-top: max(10px, env(safe-area-inset-top));
    }
}

/* Desktop */
@media (min-width: 768px) {
    .mcat-container {
        box-shadow: -4px 0 24px rgba(0,0,0,0.1);
    }
}

/* Empty State */
.mcat-empty {
    text-align: center;
    padding: 40px;
    color: var(--mcat-gray-500);
}

.mcat-empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}