/* --- Global Styles --- */
:root {
    --primary-color: #0d1b2a; /* Dark Blue */
    --secondary-color: #1b263b; /* Slightly Lighter Blue */
    --accent-color: #00aaff; /* Bright Blue for accents */
    --text-color: #e0e1dd; /* Off-white */
    --text-muted: #a9a9a9; /* Gray for less important text */
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--primary-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.2rem; border-bottom: 2px solid var(--accent-color); padding-bottom: 10px; margin-top: 40px; }
h3 { font-size: 1.5rem; color: var(--accent-color); }

p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ffffff;
}

/* --- Header & Navigation --- */
.header {
    background-color: rgba(13, 27, 42, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--secondary-color);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: bold;
    font-size: 1.5rem;
    color: #ffffff;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
}

.nav-link.active {
    color: var(--accent-color);
    font-weight: bold;
}

/* --- Hero Section (Homepage) --- */
.hero {
    text-align: center;
    padding: 100px 20px;
    background: linear-gradient(rgba(13, 27, 42, 0.9), rgba(13, 27, 42, 1)), url('https://via.placeholder.com/1500x800.png/1B263B/E0E1DD?text=Abstract+Quantum+Background') no-repeat center center/cover;
}

.hero p {
    max-width: 700px;
    margin: 1rem auto;
    font-size: 1.2rem;
    color: var(--text-color);
}

.cta-buttons {
    margin-top: 2rem;
}

.btn {
    padding: 12px 25px;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    display: inline-block;
    margin: 0 10px;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #fff;
    color: var(--primary-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

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

/* --- General Sections & Cards --- */
.section {
    padding: 60px 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 8px;
    border-left: 5px solid var(--accent-color);
}

.card .icon {
    width: 48px;
    height: 48px;
    stroke: var(--accent-color);
    margin-bottom: 1rem;
}

/* --- Products Page --- */
.product-card {
    background-color: var(--secondary-color);
    padding: 1.5rem;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
}
.product-card ul {
    list-style-type: '✓ ';
    padding-left: 20px;
    flex-grow: 1;
}

/* --- About Page --- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.team-member {
    text-align: center;
}
.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-color);
}
.team-member h4 { margin: 10px 0 5px 0; color: #fff; }
.team-member p { font-style: italic; font-size: 0.9rem; }


/* --- Contact Page --- */
.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 5px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #415a77;
    background-color: var(--primary-color);
    color: var(--text-color);
}

/* --- Footer --- */
.footer {
    background-color: var(--secondary-color);
    color: var(--text-muted);
    text-align: center;
    padding: 2rem 0;
    margin-top: 60px;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 1rem; }
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.8rem; }
    .contact-grid { grid-template-columns: 1fr; }
}