/* Senior Marketplace Main Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;

    --light-gray: #f8f9fa;
    --border-color: #dee2e6;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--light-gray);
    padding-top: 76px; /* Account for fixed navbar */
}

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
}

.main-content {
    min-height: calc(100vh - 200px);
    padding: 20px 0;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
}

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

    border-color: var(--secondary-color);
}

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.card {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: none;
    border-radius: 12px;
    transition: transform 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
}

.seller-badge {
    background: linear-gradient(45deg, #ffd700, #ffed4a);
    color: #333;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.listing-card img {
    height: 200px;
    object-fit: cover;
    border-radius: 12px 12px 0 0;
}

.chat-container {
    height: 400px;

    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    background: white;
}

.message {
    padding: 8px 16px;
    margin: 8px 0;
    border-radius: 18px;
    max-width: 70%;
    word-wrap: break-word;
}

.message.sent {
    background-color: var(--secondary-color);
    color: white;
    margin-left: auto;
    text-align: right;
}

.message.received {
    background-color: #e9ecef;
    color: #333;
}

.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--secondary-color);
    background-color: rgba(52, 152, 219, 0.05);
}

.footer {
    margin-top: auto;
}

@media (max-width: 768px) {
    body {
        padding-top: 66px;
    }
    
    .main-content {
        padding: 10px 0;
    }
    
    .chat-container {
        height: 300px;
    }
    
    .message {
        max-width: 85%;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}


@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Custom scrollbar */
.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.chat-container::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}