/* 1. RESET & BASE STYLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text-color: #ffffff;
    --accent: #00ff88;
    --bg-dark: rgba(0, 0, 0, 0.8);
}

html, body {
    width: 100%;
    height: 100%;
    background-color: #000;
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* 2. THE 3D BACKGROUND (FIXED) */
.canvas-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0; /* Base layer */
}

spline-viewer {
    width: 100%;
    height: 100%;
    /* Ensures the user can scroll even if touching the bot on mobile */
    touch-action: pan-y; 
}

/* 3. THE UI LAYER (NAV, HEADER, SECTIONS) */
nav, header, section {
    position: relative;
    z-index: 10; /* Sits on top of the bot */
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
}

.logo {
    font-weight: bold;
    letter-spacing: 2px;
    color: var(--accent);
}

.links a {
    color: white;
    text-decoration: none;
    margin-left: 20px;
    transition: 0.3s;
}

.links a:hover {
    color: var(--accent);
}

/* 4. HERO SECTION */
header {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 10%;
    /* 'none' lets you interact with the bot in empty spaces */
    pointer-events: none; 
}

header h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    line-height: 1;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.8;
}

/* Re-enable clicking for buttons/links inside the header */
header h1, header p, header button, .links a {
    pointer-events: auto;
}

button {
    width: fit-content;
    padding: 1rem 2.5rem;
    background: var(--accent);
    color: #000;
    border: none;
    font-weight: bold;
    cursor: pointer;
    margin-top: 30px;
    text-transform: uppercase;
    transition: transform 0.2s;
}

button:hover {
    transform: scale(1.05);
}

/* 5. CONTENT SECTIONS */
section {
    padding: 100px 10%;
    background: var(--bg-dark);
    min-height: 100vh;
    backdrop-filter: blur(10px); /* Modern frosted-glass effect */
}

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

.card {
    border: 1px solid #333;
    padding: 40px;
    background: #111;
    transition: 0.3s;
}

.card:hover {
    border-color: var(--accent);
}

/* 6. MOBILE OPTIMIZATIONS */
@media (max-width: 768px) {
    header {
        padding: 0 5%;
        text-align: center;
        align-items: center;
    }
}