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

:root {
    --primary: #FF6B6B;
    --primary-dark: #ee5252;
    --secondary: #4ECDC4;
    --background: #F7F7F7;
    --surface: #FFFFFF;
    --text: #2D3748;
    --text-light: #718096;
    --border: #E2E8F0;
    --success: #48BB78;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--surface);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: none;
    border: none;
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    color: var(--primary);
    background: rgba(255, 107, 107, 0.1);
}

.nav-btn.active {
    color: var(--primary);
    background: rgba(255, 107, 107, 0.1);
}

/* Main Content */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* Filters */
.filters-section {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px var(--shadow);
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-box svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-chip {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border);
    background: var(--surface);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text);
}

.filter-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-chip.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Menu */
.menu-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.menu-category {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--shadow);
}

.category-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text);
    border-bottom: 3px solid var(--primary);
    padding-bottom: 0.5rem;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.menu-item {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.menu-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-lg);
    border-color: var(--primary);
}

.item-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
}

.item-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.item-content {
    padding: 1.25rem;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.75rem;
}

.item-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

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

.item-description {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(78, 205, 196, 0.1);
    color: var(--secondary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.tag.spicy {
    background: rgba(255, 107, 107, 0.1);
    color: var(--primary);
}

.item-footer {
    display: flex;
    gap: 0.5rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background: var(--primary);
    color: white;
    flex: 1;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: scale(1.02);
}

.btn-secondary {
    background: var(--border);
    color: var(--text);
}

.btn-secondary:hover {
    background: #cbd5e0;
}

.btn-large {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
}

/* Cart */
.cart-container {
    background: var(--surface);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--shadow);
}

.cart-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.cart-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 12px;
    align-items: center;
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.cart-item-price {
    color: var(--text-light);
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-btn {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border);
    background: var(--surface);
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.125rem;
    transition: all 0.3s ease;
}

.quantity-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.quantity {
    font-weight: 600;
    min-width: 30px;
    text-align: center;
}

.remove-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

.remove-btn:hover {
    color: var(--primary);
}

.cart-empty {
    text-align: center;
    padding: 3rem 1rem;
}

.cart-empty svg {
    margin-bottom: 1rem;
}

.cart-empty p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.cart-summary {
    border-top: 2px solid var(--border);
    padding-top: 1.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.summary-row.total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border);
}

/* Chat */
.chat-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px var(--shadow-lg);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--shadow-lg);
}

.chat-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--success);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.625rem;
    font-weight: 700;
}

.chat-panel {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 400px;
    max-width: calc(100vw - 4rem);
    height: 600px;
    max-height: calc(100vh - 4rem);
    background: var(--surface);
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-lg);
    display: none;
    flex-direction: column;
    z-index: 1001;
    overflow: hidden;
}

.chat-panel.active {
    display: flex;
}

.chat-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.chat-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    transition: opacity 0.3s ease;
}

.chat-close:hover {
    opacity: 0.8;
}

.speech-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.speech-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 80%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bot-message {
    background: rgba(78, 205, 196, 0.1);
    border: 1px solid rgba(78, 205, 196, 0.2);
    align-self: flex-start;
}

.user-message {
    background: var(--primary);
    color: white;
    align-self: flex-end;
}

.message-content {
    font-size: 0.9375rem;
    line-height: 1.5;
}

.chat-loading {
    display: flex;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
}

.chat-loading span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--secondary);
    animation: bounce 1.4s infinite ease-in-out both;
}

.chat-loading span:nth-child(1) { animation-delay: -0.32s; }
.chat-loading span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.chat-quick-questions {
    padding: 0 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.quick-question {
    padding: 0.5rem 1rem;
    background: rgba(78, 205, 196, 0.1);
    border: 1px solid rgba(78, 205, 196, 0.2);
    border-radius: 20px;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text);
}

.quick-question:hover {
    background: rgba(78, 205, 196, 0.2);
    border-color: var(--secondary);
}

.chat-input-container {
    padding: 1rem;
    border-top: 2px solid var(--border);
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.mic-button {
    width: 44px;
    height: 44px;
    background: var(--secondary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.mic-button:hover {
    transform: scale(1.05);
    background: #3ab5ad;
}

.mic-button.listening {
    background: var(--primary);
    animation: pulse 1s ease infinite;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(255, 107, 107, 0);
    }
}

.chat-input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 0.9375rem;
    font-family: 'Poppins', sans-serif;
}

.chat-input:focus {
    outline: none;
    border-color: var(--primary);
}

.chat-send {
    width: 44px;
    height: 44px;
    background: var(--primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-send:hover {
    background: var(--primary-dark);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--surface);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px var(--shadow);
    z-index: 10;
    transition: all 0.3s ease;
}

.modal-close:hover {
    transform: scale(1.1);
}

.modal-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.modal-body {
    padding: 2rem;
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.modal-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.modal-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-section {
    margin-bottom: 1.5rem;
}

.modal-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.modal-section ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.modal-section li {
    padding: 0.5rem 1rem;
    background: rgba(78, 205, 196, 0.1);
    border-radius: 20px;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .menu-grid {
        grid-template-columns: 1fr;
    }
    
    .chat-panel {
        width: 100%;
        height: 100%;
        bottom: 0;
        right: 0;
        max-width: 100vw;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .filter-chips {
        justify-content: center;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}