/* Import modern font */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;700&display=swap');

/* CSS Variables for theming */
:root {
    --primary-color: #FF6B6B;
    --primary-dark: #EE5A52;
    --secondary-color: #4ECDC4;
    --accent-color: #FFE66D;
    --text-dark: #2D3436;
    --text-light: #636E72;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background: linear-gradient(135deg, #F8F9FA 0%, #E9ECEF 100%);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 48px 24px;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h100v100H0z" fill="none"/><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.1;
}

.logo {
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
    animation: fadeInDown 0.6s ease-out;
}

.tagline {
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0.95;
    position: relative;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

/* Navigation */
.nav {
    background: var(--bg-white);
    padding: 20px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav .container {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-btn {
    padding: 12px 28px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Noto Sans SC', sans-serif;
}

.nav-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Main content */
.main {
    padding: 48px 0 80px;
}

.recipes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
    animation: fadeIn 0.6s ease-out;
}

/* Recipe card */
.recipe-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
}

.recipe-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.recipe-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
    pointer-events: none;
}

.recipe-card:hover::before {
    opacity: 0.05;
}

.recipe-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.recipe-content {
    padding: 24px;
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.recipe-category {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--secondary-color), #45B7AF);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 12px;
    align-self: flex-start;
}

.recipe-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.recipe-description {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}

.recipe-meta {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid #E9ECEF;
    margin-bottom: 16px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.meta-icon {
    font-size: 1.2rem;
}

.add-to-cart-btn {
    width: 100%;
    padding: 12px;
    background: var(--bg-light);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Noto Sans SC', sans-serif;
}

.add-to-cart-btn:hover {
    background: var(--primary-color);
    color: white;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    padding: 20px;
    overflow-y: auto;
    animation: fadeIn 0.3s ease-out;
}

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

.modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-white);
    border: none;
    font-size: 2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: 40px;
}

.modal-header {
    margin-bottom: 32px;
}

.modal-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.modal-category {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.recipe-section {
    margin-bottom: 32px;
}

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 3px solid var(--accent-color);
}

.ingredients-list,
.steps-list {
    list-style: none;
    padding: 0;
}

.ingredients-list li {
    padding: 12px 16px;
    margin-bottom: 8px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition);
}

.ingredients-list li:hover {
    background: #E9ECEF;
    transform: translateX(4px);
}

.steps-list li {
    padding: 20px;
    margin-bottom: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    position: relative;
    padding-left: 60px;
    transition: var(--transition);
}

.steps-list li:hover {
    background: #E9ECEF;
    box-shadow: var(--shadow-sm);
}

.steps-list li::before {
    content: attr(data-step);
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.tips-box {
    background: linear-gradient(135deg, #FFF7E6 0%, #FFE6CC 100%);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
}

.tips-box p {
    color: var(--text-dark);
    line-height: 1.8;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid #E9ECEF;
    margin-top: 32px;
}

.price-tag {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.modal-add-btn {
    padding: 16px 48px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.modal-add-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Cart Floating Button */
.cart-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 64px;
    height: 64px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.cart-btn:hover:not(.shake) {
    transform: scale(1.1);
    background: var(--primary-dark);
}

.cart-icon {
    font-size: 1.8rem;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-color);
    color: var(--text-dark);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
}

/* Cart Modal/Sidebar */
.cart-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 1100;
    justify-content: flex-end;
}

.cart-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.cart-content {
    background: var(--bg-white);
    width: 100%;
    max-width: 400px;
    height: 100%;
    display: flex;
    flex-direction: column;
    animation: slideLeft 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
}

@keyframes slideLeft {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

.cart-header {
    padding: 24px;
    background: var(--primary-color);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.cart-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.close-cart {
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

/* Cart Tabs */
.cart-tabs {
    display: flex;
    background: var(--bg-light);
    padding: 8px;
    gap: 8px;
    flex-shrink: 0;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
}

.tab-btn.active {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.5);
}

/* Tab Content */
.tab-content {
    display: none;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.tab-content.active {
    display: flex;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    min-height: 0;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    transition: var(--transition);
}

.cart-item:hover {
    background: #E9ECEF;
}

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

.cart-item-title {
    font-weight: 600;
    margin-bottom: 4px;
}

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

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qty-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--text-light);
    background: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.qty-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    border-color: #E9ECEF;
    color: var(--text-light);
}

.qty-btn:disabled:hover {
    border-color: #E9ECEF;
    color: var(--text-light);
}

.qty-num {
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.empty-cart {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-light);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.empty-subtext {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* History Tab */
.history-header {
    padding: 16px 24px;
    border-bottom: 1px solid #E9ECEF;
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.clear-history-btn {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.clear-history-btn:hover {
    background: var(--primary-color);
    color: white;
}

.history-items {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    min-height: 0;
}

.empty-history {
    text-align: center;
    color: var(--text-light);
    margin-top: 48px;
    font-size: 1.1rem;
}

.history-order {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.history-order:hover {
    box-shadow: var(--shadow-md);
}

.order-header {
    padding: 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-light);
    transition: var(--transition);
}

.order-header:hover {
    background: #E9ECEF;
}

.order-info {
    flex: 1;
}

.order-date {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.order-summary {
    font-size: 0.9rem;
    color: var(--text-light);
}

.expand-btn {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px 8px;
    transition: var(--transition);
}

.order-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.order-details.active {
    max-height: 1000px;
    border-top: 1px solid #E9ECEF;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #F8F9FA;
}

.history-item:last-of-type {
    border-bottom: none;
}

.history-item span:first-child {
    flex: 1;
}

.history-item span:nth-child(2) {
    color: var(--text-light);
    margin: 0 12px;
}

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

.order-actions {
    padding: 12px 16px;
    background: var(--bg-light);
    display: flex;
    justify-content: flex-end;
}

.delete-order-btn {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid #DC3545;
    color: #DC3545;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.delete-order-btn:hover {
    background: #DC3545;
    color: white;
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid #E9ECEF;
    background: white;
    flex-shrink: 0;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-size: 1.2rem;
    font-weight: 700;
}

.total-price {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.price-update {
    animation: priceChange 0.3s ease-out;
}

@keyframes priceChange {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
        color: #FFE66D;
    }
}

.checkout-btn {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.checkout-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.checkout-btn:disabled,
.checkout-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--text-light);
}

.checkout-btn:disabled:hover,
.checkout-btn.disabled:hover {
    transform: none;
    box-shadow: var(--shadow-md);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(2);
        opacity: 0;
    }
}

/* Flying Item Animation */
.flying-item {
    position: fixed;
    font-size: 2rem;
    pointer-events: none;
    z-index: 9999;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Cart Shake Animation */
.cart-btn.shake {
    animation: shake 0.5s ease-in-out;
    animation-fill-mode: none;
}

@keyframes shake {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translate(-5px, 0) rotate(-5deg);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translate(5px, 0) rotate(5deg);
    }
}

/* Particle Effect */
.particle {
    position: fixed;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    pointer-events: none;
    z-index: 9999;
    animation: particle-burst 1s ease-out forwards;
}

@keyframes particle-burst {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }

    100% {
        transform: translate(var(--x), var(--y)) scale(0);
        opacity: 0;
    }
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 32px 24px;
    text-align: center;
}

.footer p {
    margin-bottom: 8px;
    opacity: 0.9;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer a:hover {
    color: var(--secondary-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

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

/* Responsive design */
@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .recipes-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .modal-body {
        padding: 24px;
    }

    .modal-title {
        font-size: 2rem;
    }

    .nav-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .cart-content {
        max-width: 100%;
    }

    /* Larger touch targets for mobile */
    .qty-btn {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }

    .cart-btn {
        width: 56px;
        height: 56px;
        bottom: 24px;
        right: 24px;
    }

    .cart-icon {
        font-size: 1.6rem;
    }

    /* Better spacing on mobile */
    .cart-item {
        padding: 20px 16px;
    }

    .add-to-cart-btn {
        padding: 14px;
        font-size: 1rem;
    }
}