/* TreeCart Main Stylesheet */
:root {
    --primary: #2d6a4f;
    --secondary: #52b788;
    --accent: #74c69d;
    --slate: #52796f;
    --brown: #6c584c;
    --text: #333;
    --text-light: #666;
    --bg: #f5f5f5;
    --white: #ffffff;
    --border: #e0e0e0;
    --success: #52b788;
    --error: #ff4757;
    --warning: #ffa502;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--white);
}

.logo-icon {
    font-size: 2em;
}

.logo h1 {
    font-size: 1.8em;
    margin: 0;
}

.logo p {
    font-size: 0.85em;
    opacity: 0.9;
    margin: 0;
}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.nav a {
    color: var(--white);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: background 0.3s;
}

.nav a:hover {
    background: rgba(255,255,255,0.2);
}

.badge {
    background: var(--error);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    margin-left: 5px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    font-weight: 600;
}

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

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

.btn-secondary {
    background: var(--slate);
    color: var(--white);
}

.btn-danger {
    background: var(--error);
    color: var(--white);
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1em;
}

.btn-block {
    width: 100%;
    text-align: center;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85em;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
}

.flash-message {
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-width: 300px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.flash-success {
    background: var(--success);
    color: var(--white);
}

.flash-error {
    background: var(--error);
    color: var(--white);
}

.flash-info {
    background: var(--slate);
    color: var(--white);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.5em;
    cursor: pointer;
    margin-left: 15px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 80px 20px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3em;
    color: var(--primary);
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.5em;
    color: var(--slate);
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.2em;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Sections */
.section-title {
    font-size: 2em;
    color: var(--primary);
    margin-bottom: 30px;
    text-align: center;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    transition: transform 0.2s;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
    position: relative;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    text-align: center;
}

.product-image img {
    max-width: 100%;
    height: 200px;
    object-fit: contain;
}

.product-placeholder {
    font-size: 4em;
}

.product-placeholder.small {
    font-size: 2em;
}

.product-placeholder.large {
    font-size: 6em;
}

.badge-sale {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--error);
    color: var(--white);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.85em;
}

.product-info {
    padding: 20px;
}

.product-name {
    font-size: 1.1em;
    color: var(--primary);
    margin-bottom: 10px;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.price-current {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary);
}

.price-old {
    font-size: 1em;
    color: var(--text-light);
    text-decoration: line-through;
}

.product-stock {
    font-size: 0.85em;
    margin-bottom: 15px;
}

.stock-available {
    color: var(--success);
}

.stock-unavailable {
    color: var(--error);
}

.product-card .btn {
    width: 100%;
    margin-top: 10px;
}

/* Categories */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.category-card {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    color: var(--text);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.2s;
}

.category-card:hover {
    transform: translateY(-5px);
}

.category-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.feature-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    border-left: 4px solid var(--secondary);
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text);
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1em;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary);
}

/* Cart */
.cart-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 30px;
}

.cart-item {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    gap: 20px;
    align-items: center;
}

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

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

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cart-item-quantity button {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 4px;
    cursor: pointer;
}

.cart-summary {
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    height: fit-content;
    position: sticky;
    top: 20px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.summary-row.total {
    font-size: 1.3em;
    font-weight: bold;
    color: var(--primary);
    border-bottom: none;
}

/* Footer */
.footer {
    background: var(--primary);
    color: var(--white);
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 15px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

/* Product Detail */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.product-images img {
    width: 100%;
    border-radius: 12px;
}

.product-details h1 {
    color: var(--primary);
    margin-bottom: 15px;
}

.product-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.category-badge {
    background: var(--secondary);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85em;
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.quantity-selector input {
    width: 80px;
    text-align: center;
    padding: 10px;
}

.quantity-selector button {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 4px;
    cursor: pointer;
}

/* Orders */
.orders-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.order-card {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.order-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.status-badge {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
}

.status-pending {
    background: #fff3cd;
    color: #856404;
}

.status-processing {
    background: #cfe2ff;
    color: #084298;
}

.status-shipped {
    background: #d1e7dd;
    color: #0f5132;
}

.status-delivered {
    background: var(--success);
    color: var(--white);
}

.status-cancelled {
    background: #f8d7da;
    color: #842029;
}

/* Auth */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 40px 20px;
}

.auth-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.auth-card h1 {
    color: var(--primary);
    margin-bottom: 30px;
    text-align: center;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
}

.auth-footer a {
    color: var(--secondary);
    text-decoration: none;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state p {
    font-size: 1.2em;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 40px;
}

/* Checkout */
.checkout-form {
    margin-top: 30px;
}

.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
}

.checkout-form-section {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.checkout-form-section h2 {
    color: var(--primary);
    margin-bottom: 20px;
    margin-top: 30px;
}

.checkout-form-section h2:first-child {
    margin-top: 0;
}

.checkout-summary {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    height: fit-content;
    position: sticky;
    top: 20px;
}

.checkout-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.checkout-item:last-child {
    border-bottom: none;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s;
}

.radio-label:hover {
    border-color: var(--secondary);
}

.radio-label input[type="radio"] {
    margin: 0;
}

.radio-label:has(input[type="radio"]:checked) {
    background: #e8f5e9;
    border-color: var(--secondary);
}

/* Profile */
.profile-section {
    max-width: 600px;
    margin: 0 auto;
}

.profile-form {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* Order Detail */
.order-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.detail-section {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

.detail-section h2 {
    color: var(--primary);
    margin-bottom: 15px;
}

.order-items-section {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.order-items-list {
    margin-bottom: 20px;
}

.order-item-detail {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--border);
}

.order-item-detail:last-child {
    border-bottom: none;
}

.item-info h3 {
    color: var(--primary);
    margin-bottom: 5px;
}

.item-total {
    font-weight: bold;
    color: var(--primary);
    font-size: 1.1em;
}

.order-summary {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border);
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
}

.page-header h1 {
    color: var(--primary);
    font-size: 2.5em;
    margin-bottom: 10px;
}

.page-header p {
    color: var(--text-light);
    font-size: 1.1em;
}

/* About Page */
.about-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.about-page h1 {
    color: var(--primary);
    text-align: center;
    margin-bottom: 10px;
}

.lead {
    text-align: center;
    font-size: 1.3em;
    color: var(--slate);
    margin-bottom: 40px;
}

.about-section {
    margin-bottom: 40px;
}

.about-section h2 {
    color: var(--primary);
    margin-bottom: 15px;
}

/* Error Pages */
.error-page {
    text-align: center;
    padding: 100px 20px;
}

.error-page h1 {
    font-size: 6em;
    color: var(--primary);
    margin-bottom: 20px;
}

.error-page p {
    font-size: 1.5em;
    color: var(--text-light);
    margin-bottom: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        width: 100%;
        justify-content: center;
    }

    .cart-layout {
        grid-template-columns: 1fr;
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 2em;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .order-detail-layout {
        grid-template-columns: 1fr;
    }
}