/* ==========================================================================
   2. FASE 1: REGISTRO & LOGIN (Registro)
   ========================================================================== */

#login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg);
    background-image:
        var(--bg-overlay, linear-gradient(135deg, rgba(11, 10, 13, 0.18) 0%, rgba(22, 20, 26, 0.32) 100%)),
        url("../../fondo.jpeg");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}

#login-screen.hidden {
    display: none;
}

.login-card {
    background: var(--glass-bg-strong);
    -webkit-backdrop-filter: blur(var(--glass-blur-strong)) saturate(120%);
    backdrop-filter: blur(var(--glass-blur-strong)) saturate(120%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: var(--shadow-glass), 0 8px 24px rgba(0, 0, 0, 0.18);
    width: 100%;
}

.login-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.75rem;
    text-align: center;
}

.login-subtitle {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.login-error {
    background: rgba(196, 74, 74, 0.1);
    border: 1px solid rgba(196, 74, 74, 0.2);
    color: var(--danger);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.85rem;
    text-align: center;
    display: none;
}

.login-error.visible {
    display: block;
}

.login-success {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.2);
    color: var(--success);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.85rem;
    text-align: center;
    display: none;
}

.login-success.visible {
    display: block;
}

.login-toggle {
    text-align: center;
    margin-top: 1rem;
}

.login-toggle a {
    color: var(--primary);
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: none;
}

.login-toggle a:hover {
    text-decoration: underline;
}

.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
}

.password-toggle:hover {
    color: var(--text);
}

.login-card .form-control {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
}

.login-card .form-control:focus {
    background: var(--input-bg);
    border-color: var(--primary);
    color: var(--text);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.login-card .form-control::placeholder {
    color: var(--text-muted);
}

.login-card .form-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.login-card .mb-3 {
    margin-bottom: 1.5rem;
}

.login-card .btn-primary {
    background: var(--primary);
    border: none;
    color: var(--bg);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.login-card .btn-primary:hover {
    background: var(--success);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.login-card .btn-outline-secondary {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.login-card .btn-outline-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-glow);
}