:root {
    --dark-navy: #020c1b;
    --light-navy: #0a192f;
    --cyan-glow: #64ffda;
    --text-light: #ccd6f6;
    --text-muted: #8892b0;
    --font-sans: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body, html {
    margin: 0;
    padding: 0;
    background-color: var(--dark-navy);
    color: var(--text-light);
    font-family: var(--font-sans);
    scroll-snap-type: y mandatory;
    overflow-y: scroll;
    overflow-x: hidden;
}

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

section {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
    scroll-snap-align: start;
    position: relative; /* Important for child positioning */
    overflow: hidden; /* Prevents bleed-over */
}

/* Banner Section */
.banner {
    /* position: relative; is inherited */
}

/* CORRECTED: #particles-js is now contained within the banner */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0; /* Sits behind the banner content */
}

/* Banner content must have a higher z-index to appear above the particles */
.main-headline, .sub-headline, .scroll-indicator {
    position: relative;
    z-index: 1;
}

.main-headline {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    color: #fff;
    font-weight: 700;
    letter-spacing: -2px;
}
.sub-headline {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.6;
    font-weight: 300;
}
.scroll-indicator {
    position: absolute;
    bottom: 60px;
    color: var(--cyan-glow);
    animation: bounce 2s infinite;
    cursor: pointer;
    text-decoration: none;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Contact Section */
.contact-section { background: linear-gradient(180deg, var(--dark-navy) 0%, #000 100%); }
.form-container {
    position: relative; /* Ensure it appears above the section's pseudo-elements if any */
    z-index: 1;
    width: 100%;
    max-width: 900px;
    background: rgba(10, 25, 47, 0.3);
    backdrop-filter: blur(15px) saturate(120%);
    -webkit-backdrop-filter: blur(15px) saturate(120%);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    display: flex;
    overflow: hidden;
}
.form-content {
    flex: 2;
    padding: 3rem;
    text-align: left;
}
.form-content h2 {
    font-size: 2rem;
    color: #fff;
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.form-content p { color: var(--text-muted); margin-bottom: 2rem; }

/* Form Styles */
.input-group { position: relative; }
.input-group input {
    width: 100%;
    padding: 14px 10px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--text-muted);
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.input-group label {
    position: absolute;
    left: 10px;
    top: 14px;
    color: var(--text-muted);
    pointer-events: none;
    transition: all 0.3s ease;
}
.input-group input:focus + label, .input-group input:valid + label {
    top: -10px;
    font-size: 0.8rem;
    color: var(--cyan-glow);
}
.input-group input:focus { outline: none; border-bottom-color: var(--cyan-glow); }
.submit-btn {
    width: 100%;
    padding: 14px;
    margin-top: 2rem;
    border-radius: 8px;
    border: 1px solid var(--cyan-glow);
    background: transparent;
    color: var(--cyan-glow);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}
.submit-btn:hover { background: rgba(100, 255, 218, 0.1); box-shadow: 0 0 20px rgba(100, 255, 218, 0.2); }

/* Data Visualization */
.data-visualization {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 250px;
}
#synaptic-web {
    width: 100%;
    height: 100%;
    max-width: 300px;
    max-height: 300px;
}

footer { margin-top: 2rem; font-size: 0.8rem; color: var(--text-muted); }

/* Responsive Design */
@media (max-width: 768px) {
    .form-container { flex-direction: column; }
    .data-visualization {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        min-height: 300px;
        padding: 2rem;
    }
    .form-content { text-align: center; }
}