.auth-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: var(--bg-base);
}

.auth-box {
    background: var(--bg-panel);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.auth-logo {
    max-width: 180px;
    margin: 0 auto 20px auto;
    display: block;
}

.auth-box h2 {
    text-align: center;
    color: var(--text-pure);
    margin: 0 0 5px 0;
    font-size: 1.5rem;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-dim);
    margin-bottom: 25px;
    font-size: 0.9rem;
}

.input-wrapper {
    position: relative;
    width: 100%;
}

.setup-input {
    width: 100%;
    padding: 14px 15px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--text-main);
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 1rem;
}

.setup-input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.2);
}

.has-error .setup-input {
    border-color: var(--danger);
}

.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: bold;
    transition: color 0.2s;
}

.auth-link:hover {
    color: var(--text-pure);
}

.panel-error-bar {
    margin-top: 15px;
    padding: 10px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: bold;
    text-align: center;
    transition: opacity 0.3s ease;
}
.panel-error-bar.hiding {
    opacity: 0;
    pointer-events: none;
    display: none;
}
.panel-error-bar.visible {
    opacity: 1;
    display: block;
}

.btn-play {
    background-color: var(--primary);
    color: var(--text-on-accent);
    border: none;
    border-radius: 8px;
    padding: 14px 24px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-play:hover:not(:disabled) {
    filter: brightness(1.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.btn-play:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.btn-play:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}