* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
}

header {
    background-color: #1a1a1a;
    color: white;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.products-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

/* Negotiate Button */
.negotiate-button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}

.negotiate-button:hover {
    background-color: #45a049;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

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

.product-image {
    width: 100%;
    height: 200px;
    object-fit: contain;
    background: #f8f8f8;
    padding: 1rem;
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #333;
    height: 3em;
    overflow: hidden;
}

.product-price {
    color: #2ecc71;
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.product-description {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
    height: 4.2em;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.badge {
    background: #2ecc71;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 1rem;
}

/* __________________________________ */
body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 400px;
    text-align: center;
}

.gradient-text {
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 24px;
    margin-bottom: 20px;
}

.input-container {
    display: flex;
    gap: 10px;
}

input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: linear-gradient(135deg, #2575fc, #6a11cb);
}

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 500px;
    /* height: 600; */
    text-align: center;
}

.gradient-text {
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 24px;
    margin-bottom: 20px;
}

.chat-box {
    height: 450px;
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 10px;
    overflow-y: auto;
    margin-bottom: 10px;
    background: #f9f9f9;
    scrollbar-width: none;
}

.input-container {
    display: flex;
    gap: 10px;
}

input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: linear-gradient(135deg, #2575fc, #6a11cb);
}

.message {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    animation: fadeIn 0.5s ease;
    display: table;
    text-align: left;
    white-space: pre-line;
}

.user-message {
    /* background: #e0f7fa; */
    background: linear-gradient(135deg, #e3f0f7, #94bdff);
    align-self: flex-end;
}

.bot-message {
    /* background: #f1f1f1; */
    background: linear-gradient(135deg, #cea3ff, #7aadff);
    align-self: flex-start;
}

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

/* ----------------------------------- login signup ------------------------ */