#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.login-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--body-background);
    position: relative;
    z-index: 1;
}

.login-container {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: 0 4px 15px var(--sphere-glow-dark);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--sphere-border);
    backdrop-filter: blur(5px);
}

.register-container {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 25px;
    box-shadow: 0 4px 15px var(--sphere-glow-dark);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--sphere-border);
    backdrop-filter: blur(5px);
}

.login-container h1,
.register-container h1 {
    color: var(--text-turquoise);
    text-align: center;
    margin-bottom: 2rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--article-text);
    font-weight: 600;
    font-family: 'Open Sans', sans-serif;
}

.form-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    border-color: var(--gradient-mid-blue);
    outline: none;
    box-shadow: 0 0 0 3px var(--sphere-glow-inner);
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: var(--header-brand-gradient);
    color: var(--button-text);
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: 'Rajdhani', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--button-hover-shadow-soft);
}

.switch-page {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--article-text);
    font-family: 'Open Sans', sans-serif;
}

.switch-page a {
    color: var(--gradient-dark-blue);
    text-decoration: none;
    font-weight: 600;
}

.switch-page a:hover {
    text-decoration: underline;
    color: var(--gradient-mint-green);
}