.auth-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(2, 4, 10, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    padding: var(--space-4);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    max-height: 90vh;
    overflow-y: auto;
}

.auth-card {
    /* composes: liquid-glass */
    background: linear-gradient(135deg,
            var(--glass-surface) 0%,
            var(--glass-edge) 50%,
            var(--glass-surface) 100%);
    backdrop-filter: blur(20px) saturate(180%) brightness(1.1);
    border: 1px solid var(--glass-edge);
    border-top-color: var(--glass-highlight);
    border-left-color: var(--glass-highlight);
    box-shadow:
        inset 0 1px 1px var(--glass-highlight),
        inset 0 -1px 1px var(--glass-shadow),
        0 4px 24px var(--glass-shadow);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;

    padding: var(--space-6);
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            var(--glass-highlight) 50%,
            transparent 100%);
    opacity: 0.6;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--glass-edge);
}

.auth-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    background: var(--liquid-inner);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border: 1px solid var(--liquid-glow);
    box-shadow: 0 0 20px var(--liquid-glow);
}

.auth-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-1);
}

.auth-subtitle {
    font-size: 14px;
    color: var(--text-tertiary);
    margin: 0;
}

/* Input estilo técnico */
.auth-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-edge);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
    box-sizing: border-box;
}

.auth-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Código de licencia - estilo monoespaciado */
.license-input {
    font-family: var(--font-mono);
    font-size: 18px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-align: center;
}

/* Separador elegante */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-5) 0;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--glass-edge);
}