:root {
    --primary: #000000;
    --background: #ffffff;
    --gray-light: #f4f4f4;
    --gray-dark: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', 'Segoe UI', Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: #fbfbfb; /* Fallback color */
    /* Adds a subtle seamless white marble texture */
    background-image: linear-gradient(rgba(255, 255, 255, 0.6), rgba(0, 0, 0, 0.6)), url('background.png'); 
    color: var(--primary);
    line-height: 1.6;
}


/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--background);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    z-index: 1000;
}

.logo {
    height: 120px; /* Adjust based on your image.png proportions */
    width: auto;
}

nav a {
    text-decoration: none;
    color: var(--primary);
    margin-left: 20px;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(255, 255, 255, 0.6), rgba(0, 0, 0, 0.6)), url('background1.jpg') center/cover;
    padding: 0 20px;
    margin-top: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--gray-dark);
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    background: var(--primary);
    color: var(--background);
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background 0.3s;
}

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

/* Portfolio Section */
.portfolio {
    padding: 100px 50px;
    text-align: center;
}

.portfolio h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 4px;
}

.card h3 {
    margin-top: 15px;
    font-size: 1.2rem;
}

/* Contact / AI Agent Section */
.contact {
    background: linear-gradient(rgba(255, 255, 255, 0.6), rgba(0, 0, 0, 0.6)), url('background5.jpg');
    padding: 100px 50px;
    text-align: center;
}

.chat-container {
    max-width: 600px;
    margin: 40px auto;
    background: var(--background);
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.chat-box {
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    padding: 12px 16px;
    border-radius: 8px;
    max-width: 80%;
}

.message.ai {
    background: var(--gray-light);
    align-self: flex-start;
}

.message.user {
    background: var(--primary);
    color: var(--background);
    align-self: flex-end;
}

.chat-input-area {
    display: flex;
    border-top: 1px solid #ddd;
}

.chat-input-area input {
    flex: 1;
    padding: 15px;
    border: none;
    outline: none;
    font-size: 1rem;
}

.chat-input-area button {
    padding: 0 25px;
    background: var(--primary);
    color: var(--background);
    border: none;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
}

footer {
    text-align: center;
    padding: 30px;
    background: var(--primary);
    color: var(--background);
}