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

:root {
    --primary-color: #4caf50;
    --primary-dark: #388e3c;
    --secondary-color: #ff9800;
    --text-dark: #2e7d32;
    --text-light: #f1f8e9;
    --bg-light: #f1f8e9;
    --border-color: #c5e1a5;
    --success-color: #66bb6a;
    --accent-red: #ef5350;
    --accent-yellow: #ffeb3b;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-container a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo-container a:hover {
    opacity: 0.8;
}

.site-logo {
    height: 45px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.logo-placeholder {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.upload-logo-btn {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    background: var(--bg-light);
    color: var(--text-dark);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-logo-btn:hover {
    background: var(--primary-color);
    color: white;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #4caf50 0%, #8bc34a 50%, #cddc39 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50" font-size="40" opacity="0.1">🥬🥕🍎🥦</text></svg>') repeat;
    opacity: 0.3;
    pointer-events: none;
}

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

.hero-logo {
    margin-bottom: 2rem;
}

.hero-logo img {
    max-width: 400px;
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: white;
    padding: 1.5rem;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

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

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

.btn-secondary {
    background: white;
    color: var(--text-dark);
    border: 2px solid var(--text-dark);
}

.btn-secondary:hover {
    background: var(--text-dark);
    color: white;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    flex: 1;
}

/* Features Section */
.features {
    padding: 4rem 2rem;
    background: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
}

/* Items Grid */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.item-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
    position: relative;
}

.item-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.item-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.item-details {
    padding: 1.5rem;
}

.item-details h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.item-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.item-description {
    color: #6c757d;
    margin-bottom: 1rem;
}

.delete-item-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(230, 57, 70, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #6c757d;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
}

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

/* Forms */
form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

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

.form-group input[type="file"] {
    padding: 0.5rem;
}

.image-preview {
    margin-top: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    text-align: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 200px;
    border-radius: 4px;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* Contact Page */
.contact-section {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.contact-header p {
    font-size: 1.125rem;
    color: #6c757d;
}

.contact-grid {
    display: flex;
    justify-content: center;
    align-items: start;
}

.contact-info {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 8px;
    max-width: 600px;
    width: 100%;
}

.contact-info h2 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-icon {
    font-size: 1.5rem;
    min-width: 40px;
}

.info-item h3 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--text-dark);
}

.info-item p {
    color: #6c757d;
    line-height: 1.6;
}

.contact-form-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-form-container h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.form-message {
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background: #d1f2eb;
    color: #0f5132;
}

.form-message.error {
    background: #f8d7da;
    color: #842029;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #2e7d32 0%, #388e3c 100%);
    color: var(--text-light);
    text-align: center;
    padding: 2rem;
    margin-top: auto;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .hero-logo img {
        max-width: 280px;
    }

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

    .hero-content p {
        font-size: 1rem;
    }

    .features h2 {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .items-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-logo img {
        max-width: 200px;
        padding: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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