/* Authentication Styles */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem 1rem;
}

.auth-box {
    background-color: var(--parchment);
    background-image: var(--parchment-texture);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    padding: 2rem;
    width: 100%;
    max-width: 450px;
    border: var(--border-style);
    position: relative;
    overflow: hidden;
}

.auth-tabs {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--parchment-darker);
}

.auth-tab {
    background: none;
    border: none;
    padding: 0.8rem 1.5rem;
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--ink-light);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-standard);
}

.auth-tab.active {
    color: var(--ink);
    border-bottom-color: var(--accent);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.auth-form h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--ink-faded);
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--parchment-darker);
    border-radius: var(--border-radius);
    background-color: var(--parchment-light);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--ink);
    transition: border-colour var(--transition-standard);
}

.form-group input:focus {
    border-colour: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.2);
}

.auth-submit {
    width: 100%;
    padding: 0.8rem;
    margin-top: 1rem;
    font-size: 1.1rem;
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    color: var(--ink-light);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--parchment-darker);
}

.auth-divider span {
    padding: 0 1rem;
    font-style: italic;
}

.guest-access {
    text-align: center;
}

.guest-btn {
    background-color: var(--parchment-dark);
    color: var(--ink-faded);
    border: 2px solid var(--parchment-darker);
    padding: 0.8rem 1.5rem;
    width: 100%;
    font-size: 1rem;
}

.guest-btn:hover {
    background-color: var(--parchment);
    color: var(--ink);
}

.guest-note {
    margin-top: 0.8rem;
    font-size: 0.9rem;
    color: var(--ink-light);
    font-style: italic;
}

.auth-error {
    color: var(--incorrect);
    margin-bottom: 1rem;
    padding: 0.5rem;
    background-color: rgba(155, 45, 45, 0.1);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--incorrect);
    display: none;
}

.auth-error:not(:empty) {
    display: block;
}

/* User Controls in Header */
#user-controls {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
    gap: 0.5rem;
}

#username-display {
    font-weight: 600;
    color: var(--accent);
    margin-right: 0.5rem;
}

.auth-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    background-color: var(--parchment);
    color: var(--ink);
    border: 1px solid var(--ink-light);
}

/* Responsive styles */
@media (max-width: 768px) {
    .auth-box {
        padding: 1.5rem;
    }

    .auth-tab {
        padding: 0.7rem 1rem;
        font-size: 1rem;
    }

    .form-group input {
        padding: 0.7rem;
    }

    #user-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
}